History of wireless telegraphy and broadcasting in Australia/Topical/Publications/Australasian Radio World/Contents

Australasian Radio World - Contents

1930s

1936

1936 08

CONTENTS:

Pick-Ups . . . . . . . . . . . . . . . . . . . . . . 3

"Air-Commodore" Has High Gain and Selectivity . . . . 4

Radio Makes the Airways Safe . . . . . . . . . . . . . 5

Pedal-Driven Teleradio . . . . . . . . . . . . . . . . 6

"Empire Shortwave Three" . . . . . . . . . . . . . . . 7

A Simple Five-Metre Battery Receiver . . . . . . . . . 14

Palec Vacuum Tube Voltmeter . . . . . . . . . . . . . 16

Adding Class B to the "Sky-Cruiser Battery Four" . . . 17

Radio Ramblings . . . . . . . . . . . . . . . . . . . . 19

Systematic Servicing Brings Best Results . . . . . . . 20

"Simplified D.W. Battery Money-saver" . . . . . . . . . 22

The ABC of Multi-Range Meter Design . . . . . . . . . . 27

A Nine·-Range D.C. Multi-Meter . . . . . . . . . . . . . 29

Radio Step by Step (3) . . . . . . . . . . . . . . . . . 32

The Lighter Side of DX . . . . . . . . . . . . . . . . 33

Prize-Winning Transmitter Has Worked All Continents . . 34

Choosing and Using a Vacuum-Tube Voltmeter . . . . . . . 36

More About the 6L6 Beam Power Amplifier . . . . . . . . 39

The AU-Wave All-World DX News . . . . . . . . . . . . . . 43

DX Champion Logs 600 Stations in Five Years . . . . . . . 44

"Card-Hunting" is Not Sole Aim of Dxing . . . . . . . . . 46

Identifying Shortwave Stations. . . . . . . . . . . . . . 47

Universal Time Conversion Indicator . . . . . . . . . . . . 48

DX Contest Arouses Widespread Interest . . . . . . . . . . 49

DX News and Views . . . . . . . . . . . . . . . . . . . 50

Logging South American Stations . . . . . . . . .. . . . . 51

Frequency Re-Shuffle For Japanese Broadcasters . . . . . . . . 52

Visiting DX Stations (3). . . . . . . . . . . . . . . . . . 53

China to have High-Power S.W. Station . . . . . . . . . . 55

All-Wave All-World DX Club-List of Members . . . . . . . . 56

1936 11

CONTENTS:

"Pick-Ups" . . . . 3

Radiokes Factory Makes Thousands of Parts Weekly . . . . 4

Sydney Ambulances To Carry Radio . . . . 5

The Outdoor Portable . . . . 6

Hints And Tips For Set Designers . . . . 8

The Beginner's Battery Two . . . . 10

The Month On Shortwave . . . . 13

The Air-Ace Dual-Wave Five . . . . 14

What’s New In Radio . . . . 16

Newcastle Hamfest A Great Success . . . . 18

This Pentode Business . . . . 20

Acoustical Labyrinth In New Stromberg-Carlson Release . . . . 23

XMHD— A Popular Chinese Broadcaster . . . . 26

A Super-Regenerative Five-Metre Receiver . . . . 27

Radio Ramblings . . . . 30

Making A Reiss Microphone . . . . 32

Building An Output Meter . . . . 33

The A.T.R.S. Bulletin . . . . 35

The Cathode Ray Oscillograph At Work (3) . . . . 36

All-Wave All-World DX News . . . . 39

Shortwave Stations Of The World (3) . . . . 40

DX Doings On The Short Waves . . . . 43

VK Amateurs — Additions and Amendments . . . . 44

Shortwave Station Addresses . . . . 45

DX Notes and News . . . . 46

All-Wave All-World DX Club — List of Life Members . . . . 48

1936 12

CONTENTS:

Radio Gifts For Christmas . . . . 3

"Scout Battery Three" . . . . 6

Radio Ramblings . . . . 10

High Quality Reproduction At Low Cost . . . . 14

New £50,000 Factory Planned By Ever-Ready . . . . 16

The "Scout Superhet Four" . . . . 17

This Pentode Business (2) . . . . 22

The Story Of Television (1) . . . . 24

Radio Step By Step (5) . . . . 26

Party Radio Magic . . . . 28

The Cathode Ray Oscillograph At Work (4) . . . . 30

Radio In India . . . . 33

The A.T.R.S. Bulletin . . . . 34

What's New In Radio . . . . 36

Radio Book Reviews . . . . 37

Round The N.Z. "B" Stations . . . . 38

VK Amateur Stations — Additions And Amendments . . . . 40

All-Wave All-World DX News . . . . 41

Radio VK4DO Is Model Amateur Station . . . . 42

Schedules Of Japan's New Shortwave Service . . . . 42

Shortwave Stations Of The World (4) . . . . 43

DX Notes And News . . . . 45

1937

1937 02

CONTENTS:

Assembling And Wiring The "Fidelity Broadcast Five" . . . . 3

Radio Ramblings . . . . 6

Building A Code Practice Oscillator . . . . 10

Radio Book Reviews . . . . 13

What's New In Radio . . . . 14

The A.T.R.S. Bulletin . . . . 16

Licensing Of Servicemen Urgently Needed . . . . 16

Nevi Series Of Articles On Amateur Radio . . . . 17

Breaking Into The Amateur Game . . . . 18

Learning The Code . . . . 20

"Getting Out" On Five Metres . . . . 23

First Radio Signal From U.S. Heard In 1923 . . . . 25

5-Metre Push-Pull Oscillator . . . . 26

The Story Of Television (3) . . . . 28

Hints And Tips For DX Beginners . . . . 30

The Lure Of DX Listening . . . . 32

Radio Step By Step (6) . . . . 33

Background Hiss In Superhets . . . . 34

Five-Metre Enthusiasts Asked To Use Superhets . . . . 36

All-Wave All-World DX News . . . . 37

DX Report Forms Save Time And Ensure Replies . . . . 38

Preparing Reports In German And Italian . . . . 39

Times To Listen For World Shortwave Stations . . . . 40

The Month On Shortwave . . . . 41

DX News Flashes . . . . 42

DX Notes And News . . . . 43

VK Amateur Stations — Additions And Amendments . . . . 45

New Range Of Radiokes Power Transformers . . . . 46

World Shortwave Stations (6) . . . . 47

W.I.A. Field Day . . . . 48

1937 03

CONTENTS:

The Story Of The Ever Ready Air Cell . . . . 3

Field Tests On First Air Cell Receivers . . . . 4

The Companionette Three . . . . 5

Fidelity Broadcast Five — Adding Bass Boosting . . . . 7

The A.T.R.S. Bulletin . . . . 8

Radio Ramblings . . . . 10

Building A Regenerative S.W. Pre-Selector Unit . . . . 14

Amateur Transmits From Bed In Hospital . . . . 18

Breaking Into The Amateur Game (2) . . . . 20

The Story Of Television (4) . . . . 24

Background Hiss In Superhets . . . . 26

Radio Step By Step (7) . . . . 29

A Portable Line Amplifier . . . . 32

What's New In Radio . . . . 33

Radio Book Reviews . . . . 35

All-Wave All-World DX News . . . . 37

Round The N.Z. "B" Stations (2) . . . . 38

Shortwave Stations Of The World (7) . . . . 39

DX Notes And News . . . . 41

Manly Radio Club Notes . . . . 42

Some DX Highlights . . . . 43

Ham Jargon . . . . 44

VK Amateur Stations — Additions And Amendments . . . . 45

Big Five-Metre Field Day Planned for March 7 . . . . 46

Leaves From A Dxer's Logbook . . . . 47

New Members All-Wave All-World DX Club . . . . 48

1937 04

CONTENTS:

When PCJ Was PCJJ . . . . 3

The 1937 International All-Wave Six . . . . 6

Radio Ramblings . . . . 10

B B.C. Television Signals Heard In Africa . . . . 14

DX Notes And News . . . . 16

Assembling And Wiring The Companionette Three . . . . 18

ZL Amateur Transmitters . . . . 21

A Two-Band Crystal Controlled Transmitter . . . . 29

Verifying All Continents . . . . 36

Breaking Into The Amateur Game . . . . 38

The A.T.R.S. Bulletin . . . . 39

Intermittent Faults Are Hardest To Locate . . . . 39

All-Wave All-World DX News . . . . 43

What's New In Radio . . . . 44

Leaves From A Dxer's Log-Book . . . . 45

"Radio World" Vol. 1 — Index To Technical Features . . . . 48

1937 05

CONTENTS:

"Radio World" Guide To The Show . . . . 3

The 1937 Empire All-Wave Three . . . . 6

Assembling, Wiring And Aligning The 1937 International All-Wave Six . . . . 10

Radio Ramblings . . . . 14

The Story Of Television (5) . . . . 18

Breaking Into The Amateur Game . . . . 20

Keeping In Touch With Darwin . . . . 23

25 Years In Amateur Radio (1) . . . . 24

Seven-Valve Dual-Waver Gives Excellent Results . . . . 26

Inverse Feedback Conquers "Pentode Tone"! . . . . 28

Image Frequency Interference On The Short Waves . . . . 30

Round The N.Z. "B" Stations (3) . . . . 32

Latest Radiokes Tri-Colour Dial A Striking Success . . . . 35

The A.T.R.S. Bulletin . . . . 36

Radio Step By Step (8) . . . . 38

"Keep Up The Good Work" . . . . 40

All-Wave All-World DX News . . . . 41

All-Continent Hook-Up In 15 Minutes . . . . 42

Leaves From A Dxer's Log Book . . . . 43

DX Notes And News . . . . 45

North Suburban Radio Club News . . . . 47

What's New In Radio . . . . 48

1937 06

CONTENTS:

The Eaglet All- Wave Two . . . . 3

Communications Type Superhet For Amateurs . . . . 6

Radio Ramblings . . . . 10

Assembling And Wiring The 1937 Empire All-Wave Three . . . . 14

25 Years In Amateur Radio (2) . . . . 18

World Shortwave Stations . . . . 21

Breaking Into the Amateur Game (5) . . . . 29

Across The Atlantic On Five Metres . . . . 32

Radio Step By Step . . . . 34

What's New In Radio . . . . 35

All-Wave All-World DX Club — New Members . . . . 37

The A.T.R.S. Bulletin . . . . 38

Eliminating Man-Made Static . . . . 38

Locating And Curing Hum . . . . 39

The All-Wave All-World DX News . . . . 41

Shortwave Review . . . . 42

DX News And Views . . . . 45

VK Amateur Stations — Additions And Amendments . . . . 47

1937 07

CONTENTS:

The Amateur Communications Eight . . . . 3

Radio Ramblings . . . . 10

New Radio Installations Regulations . . . . 15

The Jones' Super-Gainer Two . . . . 16

25 Years In Amateur Radio (3) . . . . 18

"Radio Aid" Explorers Track Down Noise . . . . 21

Designing Vibrator Type "B" Eliminators . . . . 22

Assembling And Wiring The 1937 Eaglet All-Wave Three . . . . 26

Radio Step By Step (10) . . . . 27

The A.T.R.S. Bulletin . . . . 28

Breaking Into The Amateur Game (6) . . . . 30

What's New In Radio . . . . 34

The All-Wave All-World DX News . . . . 37

Trans-Pacific DX On 10 Metres . . . . 38

Erecting 45-Foot Masts . . . . 40

Shortwave Review . . . . 41

DX News And Views . . . . 44

Climbing 6ME's 400-Foot Mast . . . . 48

1937 08

CONTENTS:

"Sky-King Dual-Wave Five" . . . . 3

Ham Jargon . . . . 5

"Air-Cell Pentagrid Seven" . . . . 6

"Fluttering On The Short Waves" . . . . 8

Radio Ramblings . . . . 10

Trans-Tasman Reception With "Companionette" . . . . 15

YL Radio Enthusiast Builds 15-Valve S.S. Super . . . . 16

High Fidelity Amplifier Uses Push-Pull 2A3's . . . . 18

Over 30,000 Miles Covered In Round Table Hook-Up . . . . 20

The "Jones' Super-Gainer Two" . . . . 22

Breaking Into The Amateur Game . . . . 26

Home-Built Talkie Plant Gives Excellent Performance . . . . 29

Multi-Band Transmitter Uses Unique Assembly . . . . 30

The A.T.R.S. Bulletin . . . . 32

Tracking Down Distortion . . . . 32

What's New In Radio . . . . 34

New 5-Metre Records . . . . 36

25 Years In Amateur Radio (4) . . . . 37

All-Wave All-World DX News . . . . 39

Shortwave Review . . . . 40

DX Contests Arouse Widespread Interest . . . . 42

DX News And Views . . . . 43

Round The Shacks (1) . . . . 44

Round The N.Z. "B" Stations (4) . . . . 45

Crown Radio Shift To Larger Factory . . . . 47

1937 10

CONTENTS:

The "1937 Outdoor Portable Four" . . . . 3

Assembling And Wiring The "Tom Thumb Two" . . . . 8

Latest Radiokes Kit-Set Is The "Advance 1937" . . . . 10

Radio Ramblings . . . . 12

Radio Club Caters For Transmitters And S.W. Listeners . . . . 16

25 Years In Amateur Radio . . . . 18

VK Amateur Calls . . . . 21

A.C./D.C. Receiver Uses New Radiotron Barretter . . . . 32

Breaking Into The Amateur Game (9) . . . . 34

Nine-Channel Ultra S. W. Radio Telephone Link . . . . 38

What's New In Radio . . . . 40

A.T.R.S. Institute — Queensland Branch . . . . 42

Radio Step By Step (11) . . . . 44

All-Wave All-World DX News . . . . 45

Shortwave Review . . . . 46

DX News And Views . . . . 49

Zero Beat Radio Club Notes . . . . 50

Round The Shacks (3) . . . . 51

Shortwave Station Addresses . . . . 52

1937 11

CONTENTS:

De Luxe Fidelity Eight . . . . 3

Valve Manufacture In Australia . . . . 8

Radio Ramblings . . . . 10

W.I.A. National Field Day On Dec. 4 . . . . 13

Breaking Into The Amateur Game (10) . . . . 14

Round The N.Z. "B" Stations (5) . . . . 18

The 1937 Outdoor Portable Four . . . . 20

25 Years In Amateur Radio (7) . . . . 24

Radio Step By Step (12) . . . . 26

Improved Operating Conditions For 1C6 On Shortwave . . . . 28

What's New In Radio . . . . 32

New Adelaide Station Has Up-to-date Transmitter . . . . 36

The All-Wave All-World DX News . . . . 37

Shortwave Review . . . . 38

Second "Radio World" S. W. Contest . . . . 39

DX News And Views . . . . 41

Ten Thousand Miles On Five Metres . . . . 42

Radio Aids Flying Doctor In Outback . . . . 43

Round The Shacks (4) . . . . 45

Shortwave Station Addresses . . . . 46

E. Neill Wins First S. W. DX Contest . . . . 47

VK Amateur Transmitters — Additions And Amendments . . . . 48

1937 12

CONTENTS:

The A.C. "Empire All-Wave Three" . . . . 3

Tasman Crossed On "Five" . . . . 7

Radio Ramblings . . . . 10

Battery Amateur Communications Superhet . . . . 12

A 15-Watt Public Address Amplifier . . . . 15

25 Years In Amateur Radio (8) . . . . 18

Making A Reiss Microphone . . . . 20

15 And 25-Watt Public Address Amplifiers . . . . 22

Radio Step By Step (13) . . . . 25

Assembling And Wiring The De Luxe Fidelity Eight . . . . 26

Round The Shacks (5) . . . . 29

Fiftieth Transmitting Member Joins Lakemba . . . . 30

What's New In Radio . . . . 34

Breaking Into The Amateur Game (11) . . . . 38

All-Wave All-World DX News . . . . 41

Shortwave Review . . . . 42

Shortwave Station Addresses . . . . 44

DX News And Views . . . . 45

VK Amateur Transmitters - Additions And Amendments . . . . 47

Level Indicator For Public Address Systems . . . . 48

1938

1938 01

CONTENTS:

"Empire" Power Pack And Amplifier . . . . 3

1938 Contest For Best Amateur Telegraphist . . . . 8

Breaking Into The Amateur Game (12) . . . . 10

Radio Ramblings . . . . 12

Radio Valves In The Making (1) . . . . 14

Schedule Of PCJ Experimental Transmissions . . . . 16

Twenty-Five Years In Amateur Radio (9) . . . . 18

World Shortwave Stations . . . . 19

Battery Amateur Communications Superhet . . . . 29

Eight-Valve T.R.F. Receiver Gives High Quality Output . . . . 36

National Field Day An Enjoyable Outing . . . . 38

What's New In Radio . . . . 41

All-Wave All-World DX News . . . . 43

Shortwave Review . . . . 44

DX News And Views . . . . 47

Australian Trained Radio Servicemen's Institute — Queensland Division . . . . 48

1938 02

CONTENTS:

The Fidelity Dual-Wave Six . . . . 3

New Ever Ready Factory Opened By Prime Minister . . . . 8

Radio Ramblings . . . . 10

More About The A.C. Empire All-Wave Three . . . . 14

Aden Amateur Station On The Air . . . . 16

Five Metres In S. Australia . . . . 18

VK2NO Advanced U.H.F. Receiver . . . . 19

Radio Valves In The Making (2) . . . . 24

Radio Step By Step (14) . . . . 27

Lavishly-Equipped Radio Service Workshop . . . . 29

What's New In Radio . . . . 32

Breaking- Into The Amateur Game (13) . . . . 35

The All-Wave All-World DX News . . . . 37

Shortwave Review . . . . 38

Third S.W. DX Contest . . . . 41

Round Table QSO Smashes Previous Record . . . . 42

Around The Shacks (6) . . . . 43

1937 Eventful Year For Shortwave Dxers . . . . 44

DX News And Views . . . . 47

1938 03

CONTENTS:

Two-Band Portable Transmitter-Receiver . . . . 3

Battery-Operated Portable Transmitter . . . . 10

Radio Ramblings . . . . 12

Japanese B.C. Stations . . . . 15

Sydney Dxer Logs Europe on B.C. Band . . . . 16

Assembling And Wiring the Fidelity Dual-Wave Six . . . . 18

Two-Valve A.C. Shortwaver Uses Coil-Switching . . . . 20

Radio Valves In The Making (3) . . . . 24

A Triple-Range Valve Voltmeter . . . . 27

What’s New In Radio . . . . 30

Radio Step By Step (15) . . . . 32

Two-Valve Local Station Superhet. . . . . 35

All-Wave All-World DX News . . . . 37

Shortwave Review . . . . 38

Round The Shacks (7) . . . . 40

1938 Radio Handbook Now Available . . . . 43

Police Signals Heard 10,000 Miles . . . . 46

DX News And Views . . . . 47

Shortwave Station Addresses . . . . 48

1938 04

CONTENTS:

Comet Superhet Four . . . . 3

Crown Releases Push-Button Kit For Set-Builders . . . . 6

Portable Five-Metre Transceiver . . . . 9

Radiokes 1938 D.W. Moneysaver Superhet . . . . 14

Pre-Selector Unit Sharpens Tuning, Increases Gain . . . . 16

50-Watt Transmitter For New Power Limit . . . . 18

Infinite Baffle Aids Tonal Fidelity . . . . 20

Shortwave Aerials For DX Reception (1) . . . . 23

"Eaglet" Gives Outstanding Performance . . . . 26

Building A Midget Three-Watt Amplifier . . . . 27

DX Contest Winner Has Logged Over 100 Countries . . . . 30

Tracking Down Power Interference (1) . . . . 31

What's New In Radio . . . . 33

The All-Wave All-World DX News . . . . 37

Sun-spot Activity Now Approaching Maximum . . . . 38

Shortwave Review . . . . 39

Hourly Tuning Guide . . . . 42

Fourth "Radio World" S.W. DX Contest . . . . 46

Round The Shacks (8) . . . . 46

DX News And Views . . . . 47

VK Amateur Transmitters — Additions And Amendments . . . . 47

Index Of Technical Features, "Radio World," Vol. 2 . . . . 48

1938 05

CONTENTS:

The Air-cell Dual-wave Four . . . . 3

Radiokes Release New Range of Power Transformers . . . . 7

Radio Ramblings . . . . 8

The Comet Superhet Four . . . . 10

An Appreciation From A.T.R.S.I. . . . . 12

"Pirate" Uses Lakemba Club Call . . . . 14

The Triode And Its Applications . . . . 16

The Scout Battery Three . . . . 18

A Trip Through The Ever Ready Factory . . . . 22

Shortwave Aerials For DX Reception (2) . . . . 27

Tracking Down Power Interference (2) . . . . 30

What's New In Radio . . . . 34

A.O.C.P. Questions And Answers . . . . 39

All-Wave All-World DX News . . . . 41

Shortwave Review . . . . 42

DX Notes And News . . . . 45

Hourly Tuning Guide . . . . 47

1938 06

CONTENTS:

The "Auto-Tune Dual-Wave Five" . . . . 3

Calstan Test Oscillator . . . . 5

Radio Ramblings . . . . 6

Radiokes Release Eight-Station Teletuner . . . . 10

More About The Air-Cell D.W. Four . . . . 11

Lakemba Club Holds Eighth Annual Reunion . . . . 14

32-Watt Amplifier Uses 6L6G's In Pushpull . . . . 18

A.O.C.P. Questions And Answers . . . . 20

World Shortwave Stations . . . . 22

Tracking Down Power Interference (3) . . . . 28

Round The Shacks (8) . . . . 32

What's New In Radio . . . . 33

All-Wave All-World DX News . . . . 39

Shortwave Review . . . . 40

Hourly Tuning Guide . . . . 43

American Radio Police Calls . . . . 44

Fourth S.W. DX Contest . . . . 45

DX News And Views . . . . 46

Ex-Fingerprint Expert Conducts PCJ Session . . . . 47

1938 07

CONTENTS:

The "Auto-Tune Dual-Wave Five" . . . . 3

Model "Q" Console Is Latest S.T.C. Release . . . . 10

Four-Watt Beam Amplifier . . . . 11

Home Recording For The Amateur . . . . 14

Amateur Station Equipment (1) — Monitor And Modulation Meter . . . . 18

World Shortwave Stations . . . . 23

A.O.C.P. Questions And Answers . . . . 27

Pentode And Beam Tetrode Valves . . . . 29

200 Visitors Inspect Philips Valve Works . . . . 31

What's New In Radio . . . . 32

Palec "VCT" Valve And Circuit Tester . . . . 35

The All-Wave All-World DX News . . . . 37

Shortwave Review . . . . 38

Hourly Tuning Guide . . . . 41

Official Australian Radio Service Manual . . . . 45

DX News And Views . . . . 46

"1938 De Luxe Fidelity Eight" . . . . 47

International Amateur Prefixes . . . . 48

1938 09

CONTENTS:

"Atlas All-Waver" . . . . 3

Brimar Releases New 6AG6-G Output Pentode . . . . 8

Rectifiers, Filters, And Hum . . . . 10

Radio Ramblings . . . . 12

The "Challenger Dual-Wave Six" . . . . 16

The "Ultra-Shorts" In Review . . . . 17

A.O.C.P. Questions And Answers . . . . 21

High Fidelity Reception Of Local Stations . . . . 24

Radio Reminiscences . . . . 27

The "1938 De Luxe Fidelity Eight" . . . . 28

The "Trans-Tasman U.H.F. Two" . . . . 30

What's New In Radio . . . . 32

Lectures On Oscillograph And Home Recording . . . . 35

"Empire" Power-Pack Wiring Plan . . . . 37

Philips Photo Cell Has Many Applications . . . . 38

Assembling And Wiring The "Air-Ace Communications Four" . . . . 39

"Vibra Dual- Wave Five" . . . . 44

Shortwave Review . . . . 45

1938 10

CONTENTS:

"1938 Amateur Communications Eight" . . . . 3

"1938 Outdoor Portable Four" . . . . 6

Adding A Tuned R.F. Stage To The "Atlas All-Waver" . . . . 10

Portable Transmitter Taken On Radio Hike . . . . 12

EMI Makes Good Indicator For Absorption Frequency Meter . . . . 15

A.O.C.P. Questions And Answers . . . . 17

The Ultra-Searcher . . . . 20

Radio Book Reviews . . . . 22

Contest Winner VK2ADE Operates De Luxe Station . . . . 24

The "Ultra-Shorts" In Review (2) . . . . 25

Getting That Trophy-Winning "Verie" . . . . 28

1.4-Volt Valves Announced In States . . . . 30

What's New In Radio . . . . 32

Building The A.C. Version Of The "Air-Ace Communications Four" . . . . 36

All-Wave All-World DX News . . . . 39

Shortwave Review . . . . 40

Hourly Tuning Guide . . . . 44

Result Of Fifth DX Contest . . . . 45

O. Washfold Wins QSL Card Contest . . . . 47

1938 11

CONTENTS:

Nineteen Range Combination Vacuum Tube Voltmeter And Multi-meter . . . . 3

17-Watt Amplifier Uses Push-Pull 6L6G's . . . . 8

Adding A Pentode Stage To The Atlas All-Waver . . . . 10

Aerial Beacon Erected On Ever Ready Building . . . . 12

Planning Radio Set Sensitivity . . . . 14

New Perth Transmitter Now On Air . . . . 16

Assembling And Wiring The 1938 Amateur Communications Eight . . . . 17

Assembling And Wiring The 1938 Outdoor Portable Four . . . . 21

CFGP Is British Empire's Most Northern Station . . . . 29

The "Ultra-Shorts" In Review . . . . 30

Coil-Winding Data For Philips EK2G Octode . . . . 31

Unique Home Recording Demonstration . . . . 32

What's New In Radio . . . . 34

Radio Book Reviews . . . . 36

All-Wave All-World DX News . . . . 37

Shortwave Review . . . . 38

Hourly Tuning Guide . . . . 43

DX News And Views . . . . 45

1938 12

CONTENTS:

The "Sky-King Dual-Wave Five" . . . . 3

Resistance And Capacity Checker . . . . 6

Tasma 1.4-Volt Valve Receiver Gives Outstanding Results . . . . 7

More About The 5-Metre Super-Gainer . . . . 10

"Hi-Fi" Speaker Baffle . . . . 12

Radio For Bush Search Parties . . . . 14

Waverley And Hurstville Radio Club Notes . . . . 16

Improved Performance From 6K8G Converter . . . . 17

Home Recording (1) . . . . 21

World Shortwave Stations . . . . 23

5-Band 10- To 160-Metre 'Phone And C.W. Transmitter . . . . 29

What's New In Radio . . . . 34

All-Wave All-World DX News . . . . 41

Shortwave Review . . . . 42

Hourly Tuning Guide . . . . 46

5- And 10-Metre Transmitter Next Month . . . . 48

1939

1939 01

CONTENTS:

Queensland Demonstration Of New 1.4-Volt Valve Receiver . . . . 1

1.4-Volt Valves Ideal F or Country And Portable Radios . . . . 3

Rola Reproducers F or New 1.4-Volt Valves . . . . 8

Special Ever-Ready Cell For 1.4-Volt Valves . . . . 9

The "One-Four Portable Five" . . . . 10

"1939 Sky-King Dual-Wave Five" . . . . 18

Planning Receiver Selectivity . . . . 21

World Shortwave Stations . . . . 23

Home Recording (2) . . . . 30

National Field Day Outing . . . . 32

What’s New In Radio . . . . 34

Radio Book Reviews . . . . 35

Resistance And Capacity Checker . . . . 37

The All-Wave All-World DX News . . . . 39

Shortwave Review . . . . 40

Hourly Tuning Guide . . . . 45

Readers Invited To Join Australian Corps Of Signals . . . . 47

1939 02

CONTENTS:

5- And 10-Metre 'Phone And C.W. C.C. Transmitter . . . . 3

Palec Primary Frequency Standard . . . . 10

Radio Ramblings . . . . 13

Building A Field Strength Meter . . . . 14

Assembling And Aligning The "One-Four Portable Five" . . . . 18

Home Recording (3) . . . . 21

Photographing Heart Beats . . . . 24

The D.B.K. 9- To 1000-Metre Communications Receiver . . . . 26

DX On The "Ultra-Highs" . . . . 29

Rola Gesture To Bush Fire Sufferers . . . . 32

What’s New In Radio . . . . 33

Vibrator Unit : Trans-Tasman P.B. Five . . . . 36

The All-Wave All-World DX News . . . . 37

Shortwave Review . . . . 38

Hourly Tuning Guide . . . . 45

1939 03

CONTENTS:

5- And 10-Metre Phone and C.W. Transmitter . . . . 3

Stromberg-Carlson 1939 Dealers' Conference . . . . 6

Public Address Outfit Uses New Projection Unit . . . . 8

"One-Four Portable Five" On Test . . . . 9

The "Trans-Tasman All-Wave P.B. Five" . . . . 10

Radio Aids The Outback . . . . 13

Hurstville Radio Club Notes . . . . 16

Building A Pocket Multi-Meter . . . . 17

Building A Code Practice Oscillator . . . . 22

Learning The Code . . . . 23

How Dry Batteries Are Made . . . . 24

Acoustic Filter In Latest Rola Units . . . . 26

The 2NO Amateur Band Superhet . . . . 29

The Universal Receiver . . . . 31

What's New In Radio . . . . 35

All-Wave All-World DX News . . . . 37

Shortwave Review . . . . 38

Hourly Tuning Guide . . . . 45

All-Wave All-World DX Club — New Members . . . . 47

DX Alphabet — Phonetic Pronunciations . . . . 48

1939 04

CONTENTS:

How To Make Home Recordings . . . . 3

Standardised Components For Set-Builders . . . . 6

Important New Rola Patent . . . . 7

160 Miles On Five Metres . . . . 8

Club Contests In Full Swing . . . . 10

"Sky-Hawk All-Wave Three" . . . . 12

This Thing Called "Q" . . . . 18

15 To 600-Metre Marine Receiver . . . . 22

The Velco 1939 Mastery Battery Five . . . . 27

Modern Trends In Set Design . . . . 32

What’s New In Radio . . . . 35

Leaves From A Serviceman’s Diary . . . . 37

"Find-The-Fault" Contest For Readers . . . . 38

Shortwave Editor Tests DX Champion Receiver . . . . 40

Shortwave Review . . . . 42

Hundreds Of Constructional Items In Back Issues — Special Offer To Readers . . . . 47

1939 05

CONTENTS:

The Astra Dual-Wave Six . . . . 3

Lakemba Radio Club Reunion . . . . 10

1939 Companionette Three . . . . 12

Radio Ramblings . . . . 15

Find-The-Fault Contest . . . . 16

Hear The World On Tiny Tim . . . . 18

Keep Charging! . . . . 21

Experimenters — Get Down To "Ultra-Shorts" . . . . 22

Leaves From A Serviceman’s Diary (2) . . . . 24

Installing An Extension Speaker . . . . 26

One-Four Portable On 100-Mile Canoe Trip . . . . 30

The Ultra DX Three . . . . 32

What's New In Radio . . . . 38

1939 Australian Official Radio Service Manual . . . . 40

The All-Wave All-World DX News . . . . 41

Shortwave Review . . . . 42

Hourly Tuning Guide . . . . 46

Rola "Permacentric" Construction . . . . 48

1939 06

CONTENTS:

The "Astra Dual-Wave Six" . . . . 3

The "Ultra DX Three" . . . . 6

New Ever Ready Batteries For 1.4-Volt Portables . . . . 8

Fight For Amateur Bands . . . . 10

Simple Portable Aerial . . . . 11

This Thing Called "Q" . . . . 12

More About The 1939 Companionette Three . . . . 15

A Portable Valve Checker . . . . 17

More Sets From Back Numbers . . . . 21

A.O.C.P. Questions And Answers . . . . 22

Experimenters - Get Down To Ultra Shorts . . . . 24

Installing An Extension Speaker . . . . 26

A Test-Bench Multi-Vibrator . . . . 28

Making A Reiss Microphone . . . . 31

Leaves From A Serviceman's Diary (3) . . . . 32

The Economy Fidelity Amplifier . . . . 33

What's New In Radio . . . . 36

Shortwave Review . . . . 41

Hourly Tuning Guide . . . . 46

1939 07-08

CONTENTS:

Field Test On New S.T.C. Portable . . . . 3

"Sky-Chief Dual-Wave Five" . . . . 5

Outstanding Performance From "Our-Four" Portable . . . . 6

Indicator Lights For Radiogram . . . . 9

1939 Atlas All-Wave Three . . . . 10

Economy Fidelity Amplifier . . . . 13

Over 50 Entries For "Find-The-Fault" Contest . . . . 15

Bush Radio Rescue Test . . . . 19

Portables On Parade . . . . 21

Leaves From A Serviceman's Diary (4) . . . . 28

The Cathode Ray Oscillograph (l) . . . . 29

160 Miles On Five Metres . . . . 32

What's New In Radio . . . . 33

Three New Six-Inch Rola Models: Ideal For Portables . . . . 37

Sixth S.W. D.W. Contest . . . . 38

Shortwave Review . . . . 39

Hourly Tuning Guide . . . . 46

1939 09

CONTENTS:

The Falcon Dual-Wave Four . . . . 3

Six-Band Frequency Meter . . . . 7

Latest Model Ultimate On Test . . . . 8

Wiring And Aligning The Sky-Chief Dual-Wave Five . . . . 10

The Cathode Ray Oscillograph (2) . . . . 12

Portable Gear For Bush Radio Tests . . . . 18

Radio Ramblings . . . . 20

Australian Broadcasting Stations . . . . 23

High-Gain Antenna For The Ultra-Highs . . . . 27

1939 Atlas All-Wave Three . . . . 29

Jottings From Readers . . . . 30

Leaves From A Serviceman's Diary . . . . 31

What's New In Radio . . . . 33

Shortwave Review . . . . 39

Hourly Tuning Guide . . . . 45

1939 10

CONTENTS:

Picnic Portable Four . . . . 3

Vulcan Shortwaver . . . . 7

£40,000 S.T.C. Air Raid Shelter . . . . 7

New Era For Battery Radio . . . . 9

War News On The Short Waves . . . . 10

Learn The Morse Code . . . . 11

What's New In Radio . . . . 16

Falcon Dual-Wave Four . . . . 17

Testing Transformer Windings . . . . 18

World Shortwave Stations . . . . 19

1.4-Volt Shortwave Superhet . . . . 24

13.5 Watts From 2A3's In Push-pull . . . . 27

Sixth DX Contest Winner Relates His Experiences . . . . 31

Latest Loggings On Shortwave . . . . 33

Broadcast Band DX Notes . . . . 37

1939 11

CONTENTS:

Fisk Radiola Portable Five . . . . 3

Two Communications "Supers." . . . . 5

Radio Club Notes and News . . . . 8

The Picnic Portable Four . . . . 9

Needle Pointers For Record Users . . . . 15

Leaves From A Serviceman's Diary (6) . . . . 18

Shortwave. And All-Wave Receivers From Back Numbers . . . . 20

Meters For A.G. And D.C. Measurements . . . . 22

What's New In Radio . . . . 26

Brown Projection Unit Popular With Public Address Operatives . . . . 28

Three New S.T.C. Releases . . . . 29

A Hint For Smoother Reaction . . . . 30

Shortwave Review . . . . 31

Broadcast Band DX Notes . . . . 36

Broadcast Band DX Contest . . . . 37

Radio In The Outback . . . . 38

All-Wave All-World DX Club-New Members . . . . 40

1939 12

CONTENTS:

Loop Portable Three . . . . 3

The Story of R.C.S. Radio (1) . . . . 6

R.C.S. Releases Five-Band Coil Assembly . . . . 8

Mullard World-Master Consolette Gives Outstanding Performance . . . . 10

Junior Class "B" Amplifier . . . . 13

Air-Scout Communications Six . . . . 15

Service Equipment (2) . . . . 18

Beam-A-Scope Noise-Killer Aerial . . . . 23

The Vulcan Shortwaver . . . . 26

What's New In Radio . . . . 27

Two New Amplion Speakers . . . . 31

Shortwave Review . . . . 32

"Radio World" All-Wave Oscillator . . . . 37

1940s

1940

1940 01

CONTENTS:

The Daventry Dual-Waver . . . . 3

The Story Of R.C.S. Radio (2) . . . . 6

Five-Band Communications Superhet . . . . 8

Service Equipment (3) . . . . 10

Vulcan Pre-Selector Unit . . . . 13

Choosing A Microphone . . . . 15

"Radio World" All-Wave Oscillator . . . . 17

Waverley Radio Club Notes . . . . 25

What's New In Radio . . . . 26

New Headquarters For Marconi School . . . . 28

"Communications Eight" A Fine Performer . . . . 30

Shortwave Review . . . . 31

Broadcast Band DX Notes . . . . 37

1940 02

CONTENTS:

New A.C.-Battery "Duo" Portable . . . . 3

Book Reviews . . . . 4

1940 Companionette Three . . . . 5

Modulated Oscillators . . . . 9

Midget Three-Watt Amplifier . . . . 11

World-Cruiser Communications Eight . . . . 13

The Story of R.C.S. Radio (3) . . . . 27

What's New In Radio . . . . 29

Long-Horn Public Address Speakers . . . . 31

Shortwave Review . . . . 33

1940 03

CONTENTS:

CONSTRUCTIONAL

"Wonder One," 5-band, 1-valve . . . . 23

"Dandy," 3-valve a.c. superhet. . . . . 13

"World Standard for 1940" . . . . 3

GENERAL TECHNICAL

U.S. Circuits for the 1940-41 Season . . . . 9

Country Set Circuit Design . . . . 19

A Group Trainer for Morse Code . . . . 11

TEST EQUIPMENT

Laboratory Service for Readers . . . . 20

Testing Radio Components . . . . 33

The Output Meter . . . . 21

SHORT WAVE SECTION

The Month's Loggings . . . . 30

Station Schedules and Changes . . . . 29

Ultra-High-Frequency Notes . . . . 32

JUNIOR TECHNICAL

The Workshop Bench . . . . 36

Care of Tools . . . . 37

TRADE NOTES

"Delta" Test Equipment . . . . 35

Radio Art Union . . . . 35

SPEEDY QUERY SERVICE

Answers to Readers' Problems . . . . 39

1940 04

CONTENTS:

CONSTRUCTIONAL

"Junior" Short-wove Converter . . . . 3

"Bedsider" 2-valve Battery T.r.f. . . . . 7

" R.E." Portable Kit-set . . . . 16

"Scout" Battery-operated T.r.f. . . . . 38

" R.C.S. Version of the Picnic Portable . . . . 14

GENERAL ARTICLES

Letters to the Editor . . . . 13

Radio Saves the Fruit Crop . . . . 13

Air-Test No. 1 . . . . 37

Hints and Tips . . . . 42

TEST EQUIPMENT

Valve and Circuit Testers . . . . 9

Laboratory Service for Readers . . . . 43

SHORT-WAVE SECTION

The Month's Loggings . . . . 34

Station Schedules and Changes . . . . 33

Special Notice to DX Club Members . . . . 36

AMPLIFIER SECTION

Amplifiers for Home Use . . . . 17

Amplifier Championship . . . . 19

"Baby Grand" Amplifier . . . . 21

"Big Boy" Power Amplifier . . . . 29

"Fundamental" Power Supply . . . . 25

JUNIOR TECHNICAL

Soldering . . . . 44

Novel Wet Cell . . . . 45

TRADE NOTES

Amplifier Equipment . . . . 20

Morse Code Kit . . . . 42

SPEEDY QUERY SERVICE

Answers to Readers' Problems . . . . 47

1940 05

CONTENTS:

CONSTRUCTIONAL -

"De-Luxe Fidelity 8" . . . . 3

"12-Volve Super Set" . . . . 9

"Mystery Dual-waver" . . . . 15

"Vibra" P.A. Amplifier . . . . 18

"Junior" S. W. Converter for Batteries . . . . 37

GENERAL TECHNICAL -

Crystal circuits . . . . 34

Modest Kitsets . . . . 35

Headache Corner . . . . 17

The Sniper Post . . . . 13

Gang's All Here . . . . 40

Valve Characteristics . . . . 43

AMPLIFIER SECTION

Diphonic Reproducers . . . . 26

Further Notes on Fidelity . . . . 21

AMPLIFIER CHAMPIONSHIP . . . . 24

SHORT-WAVE SECTION

Review . . . . 29

The Month's Loggings . . . . 30

The DX Club . . . . 33

JUNIOR TECHNICAL

Twist Drills . . . . 44

Amplifier Hints . . . . 45

Hints and Tips . . . . 42

Handy Saw . . . . 44

TRADE NOTES

Rola Expands . . . . 15

Murdoch's Kitsets . . . . 35

Philips Valves . . . . 41

Telsen Two-range Meters . . . . 42

Mullard Booklet . . . . 43

SPEEDY QUERY SERVICE

Answers to Readers' Problems . . . . 47

1940 06

CONTENTS:

CONSTRUCTIONAL -

"Fidelity Six" . . . . 3

"Mystery Dual-Waver" . . . . 17

"Vibra Fidelity Amplifier" . . . . 21

"War News Booster Unit" . . . . 35

GENERAL TECHNICAL -

"Old Reliable" . . . . 9

Set Building as a Hobby . . . . 11

AMPLIFIER SECTION -

Fidelity Amplifier for Country Home . . . . 21

Amplifier Championship . . . . 23

Elimination of Distortion . . . . 27

SHORT-WAVE SECTION -

From Ill-fated Oslo . . . . 14

Hour by Hour Tuning Guide for War News . . . . 24

Review . . . . 29

The Month's Loggings . . . . 30

Short-Wave Tuning Guide . . . . 32

JUNIOR TECHNICAL -

Hints and Tips . . . . 42

Earthing the Receiver . . . . 44

Soldering Practice . . . . 45

TRADE NOTES -

Free Price List . . . . 42

New Radiokes Company . . . . 43

SPEEDY QUERY SERVICE -

Answers to Readers' Problems . . . . 47

1940 07

CONTENTS:

CONSTRUCTIONAL —

"Tip-Top Three-Four Superhet" . . . . 5

Standard A.C. Power Unit . . . . 19

Two Novel Circuits From America . . . . 25

GENERAL TECHNICAL —

Battery Chargers . . . . 11

Using An R.F. Oscillator . . . . 15

Rola Introduces "Kappa" Cones . . . . 35

AMPLIFIER SECTION —

Amplifier Championship . . . . 22

SHORT-WAVE SECTION —

Review . . . . 28

The Month's Loggings . . . . 30

JUNIOR TECHNICAL —

Hints and Tips . . . . 37

Building a Galvanometer . . . . 38

TRADE NOTES —

W . G. Watson Release 1940 Test Equipment . . . . 40

Meter Repairs . . . . 40

Free Resistor De-coder . . . . 40

Bargain Lines at Murdock's Radio Sale . . . . 42

SPEEDY QUERY SERVICE —

Answers to Readers' Problems . . . . 41

1940 08

CONTENTS:

CONSTRUCTIONAL —

American-Style Communications Nine . . . . 5

Direct-Coupled Circuits . . . . 15

A Novel Power Unit . . . . 20

GENERAL TECHNICAL —

The A.B.C. of Multi-Range Meter Design . . . . 29

Aerials for Better Reception . . . . 38

AMPLIFIER SECTION —

Amplifier Championship . . . . 23

SHORT-WAVE SECTION —

Review . . . . 31

Loggings . . . . 32

Short-wave Broadcast Station List . . . . 34

JUNIOR TECHNICAL —

Hints and Tips . . . . 40

A Simple Electric Motor . . . . 42

J.T. Queries . . . . 43

Cutting Threads with Dies and Taps . . . . 43

TRADE PARADE —

Air Test of Latest Breville Receiver . . . . 19

Bargains from Invincible Radio . . . . 27

Vealls 1940 Catalogue . . . . 27

New Philips Valve Chart . . . . 27

SPEEDY QUERY SERVICE —

Answers to Readers' Problems . . . . 45

1940 09

CONTENTS:

CONSTRUCTIONAL —

The Winning Amplifier . . . . 11

American-Style Communications Nine . . . . 15

Star Battery D/W Five . . . . 17

Velco Crystal Set . . . . 41

AMPLIFIER SECTION —

Amplifier Contest . . . . 5

SHORT-WAVE SECTION —

Review . . . . 30

Help Wanted . . . . 31

Loggings . . . . 32

JUNIOR TECHNICAL —

How to Build a Morse Key . . . . 42

J. T. Queries . . . . 43

Random Jottings . . . . 43

TRADE PARADE —

Air Test of New Stromberg-Carlson Portable . . . . 28

Latest Radiola Model No. 282 . . . . 38

New Rola 5-9 . . . . 40

Free Catalogue From U.R.D. . . . . 40

Morse Sets From John Martin . . . . 40

Radio Book Review . . . . 40

SPEEDY QUERY SERVICE —

Answers to Readers' Problems . . . . 45

1940 10

CONTENTS:

CONSTRUCTIONAL —

Reinortz Three . . . . 5

Itsy-Bitsy Mantel Model . . . . 13

Velco Hi-Fidelity Five . . . . 17

TECHNICAL —

Problems With 1.4 Valves . . . . 11

Oscillator Grid Currents . . . . 25

Intermediate Transformers . . . . 27

Don'ts for Battery Charging . . . . 38

SHORT-WAVE SECTION —

Review . . . . 30

Radio Engineer from Japan . . . . 30

The Month's Loggings . . . . 32

TRADE PARADE —

Calstan Portable Reviewed . . . . 28

Ultimate "World-wave" Model . . . . 29

New Trimmers for R.C.S. . . . . 36

Book Reviews . . . . 42

SPEEDY QUERY SERVICE —

Answers to Readers' Problems . . . . 41

1940 11

CONTENTS:

CONSTRUCTIONAL —

Trans-Port . . . . 5

Straight Four . . . . 13

All-wave Oscillator . . . . 19

Criterion Crystal Set . . . . 24

TECHNICAL —

Direct-coupled Phase-changers . . . . 9

Further Championship Circuits . . . . 12

How to Use a Morse Key . . . . 25

H.T. from Accumulator . . . . 27

SHORT-WAVE SECTION —

Review . . . . 29

This Month's Loggings . . . . 30

Short-wave Stations of the World . . . . 33

TRADE PARADE —

Mardel Fan . . . . 38

Newcomer to Delta Range . . . . 38

Morse Combination Units . . . . 38

Expansion at John Martin's . . . . 39

New Dials by Radiokes Pty. Ltd. . . . . 39

Transverse Cutting Gear . . . . 39

Power Rheostats by I.R.C. . . . . 39

A.W.A. Modulated Oscillator . . . . 39

SPEEDY QUERY SERVICE —

Answers to Readers' Problems . . . . 41

1940 12

CONTENTS:

CONSTRUCTIONAL —

D.W. 13/42 . . . . 5

Xmas Portable . . . . 7

Tip Top Superhet . . . . 11

Tone Corrector . . . . 30

TECHNICAL —

Speaker Transformers . . . . 15

Dial Tracking . . . . 16

Loud-Speaker Impedances . . . . 18

SHORT-WAVE SECTION —

Short-wave Review . . . . 20

War News Around the Clock . . . . 22

This Month's Loggings . . . . 24

New Members of All-Wave All-World DX Club . . . . 28

TRADE PARADE —

Raymart Range at John Martin's . . . . 29

Kiddies' Xmas Gifts . . . . 29

Special Service at Davis Radio Co. . . . . 29

"Exporters" . . . . 29

City Store's Many Years in Radio . . . . 29

SPEEDY QUERY SERVICE —

Answers to Readers' Problems . . . . 33

1941

1941 01

CONTENTS:

CONSTRUCTIONAL —

Countryman's Six . . . . 5

Xmas Portable . . . . 23

Push-Pull Proposition . . . . 43

GENERAL TECHNICAL —

Scott Communications Receiver . . . . 13

How to Use the "Radio World" A. W. Oscillator . . . . 17

An Interesting Circuit from Western Australia . . . . 20

The "Lilley" Amplifier . . . . 29

The 1940 Circuits . . . . 30

Dobson's Amplifier . . . . 41

A Novelty Set . . . . 51

New Laboratory Service . . . . 55

TRADE PARADE —

Latest Kriesler Release . . . . 49

Two Attractive Receivers from S.T.C. . . . . 53

Fan Disc Locking Washers Now Available . . . . 54

City Store's Entry into Manufacturing Trade . . . . 54

Spitfire Dial . . . . 54

New Philips Valve Booklet . . . . 54

SHORT-WAVE SECTION —

Review . . . . 32

Loggings . . . . 35

SPEEDY QUERY SERVICE —

Answers to Readers' Problems . . . . 57

1941 02

CONTENTS:

CONSTRUCTIONAL —

The Club Special . . . . 11

Local-Tone Four . . . . 13

The Standard Crystal Set . . . . 30

GENERAL TECHNICAL —

Compensated Acoustics . . . . 5

TRADE PARADE —

Counter Checkers . . . . 29

Two Mullard Portables . . . . 28

Free Foxradio Order Pads . . . . 28

Mullard Valve Chart Reprinted . . . . 28

SHORT-WAVE SECTION —

Loggings . . . . 18

SPEEDY QUERY SERVICE —

Answers to Readers' Problems . . . . 33

1941 03

CONTENTS:

CONSTRUCTIONAL —

The Club Special . . . . 5

Acoustic Compensated Superhet . . . . 25

GENERAL TECHNICAL —

Compensated Acoustics . . . . 15

Code Practice Oscillator . . . . 40

Radio Tools . . . . 45

TRADE PARADE —

Radiola Review . . . . 41

New Lines from Levenson's . . . . 42

Parts Required? . . . . 42

Paramount Review . . . . 47

SHORT-WAVE SECTION —

Review . . . . 32

Loggings . . . . 34

SPEEDY QUERY SERVICE —

Answers to Readers' Problems . . . . 49

1941 05

CONTENTS:

CONSTRUCTIONAL —

"All-World Two" . . . . 5

Code Oscillator for A.C. . . . . 9

Build a "Servi-Meter" . . . . 15

Crown "C.R.P." Six . . . . 30

"Porto-Gram" Amplifier . . . . 39

TECHNICAL —

Simple Volume Expansion . . . . 10

Correct Field Excitation . . . . 36

SHORT-WAVE SECTION —

Notes by L. J. Keast . . . . 42

Loggings of the Month . . . . 44

New Stations . . . . 44

New Schedules for London . . . . 47

SERVICEMEN'S SECTION —

Build a "Servi-Meter" . . . . 15

Systematic Servicing . . . . 19

New Oscillograph by Paton . . . . 19

Vibrator High-tension Units . . . . 24

Valve Chart Available . . . . 28

Dealer Proposition . . . . 34

Correct Field Excitation . . . . 36

Alignment of Permotune Units . . . . 37

Trade Parade . . . . 49

SPEEDY QUERY SERVICE —

Answers to Readers' Problems . . . . 50

1941 07

CONTENTS:

CONSTRUCTIONAL —

"Vibra 4" for Countryman . . . . 5

5-Band Modulated Oscillator . . . . 11

Thirteen-watt Amplifier . . . . 15

Power Oscillator . . . . 29

TECHNICAL —

How to Use an Oscillator . . . . 32

Modern Sound for Modern Hotels . . . . 33

Speedy Query Service . . . . 34

SHORT-WAVE SECTIONS —

Conditions Affecting Reception . . . . 20

Short-wave Review . . . . 23

Loggings of the Month . . . . 24

1941 08

CONTENTS:

CONSTRUCTIONAL —

"Trade Builder Five" Mantel Model . . . . 5

All-wave One-valve Receiver . . . . 19

The Crystal Circuit to End All Crystal Circuits . . . . 32

Amplifier for Fidelity at Low Volumes . . . . 19

Pre-amplifier Circuit for Microphones . . . . 31

TECHNICAL —

Curing Instability in Modern Superheterodynes . . . . 15

Attaining High Speed at the Morse Code . . . . 13

What Is "Radio Location"? . . . . 30

Free Technical Data Chart Offer . . . . 38

Analysing Push-pull Output Circuits . . . . 33

SHORT-WAVE SECTION —

Loggings of the Month . . . . 24

Short-wave Review . . . . 22

New Members of the DX Club . . . . 34

TRADE SECTION —

New "Westex" Cabinets . . . . 35

Philips' 50 Years of Progress . . . . 35

Mullard Mantel Models Reviewed . . . . 29

Ultimate Catalogue Issued . . . . 37

1941 09

CONTENTS:

CONSTRUCTIONAL —

Signal Tracer for Servicemen . . . . 5

Simplest Five-Valver . . . . 11

"Vibra Four" as "Trade Builder" . . . . 29

TECHNICAL —

Balance Conditions in Push-pull Output . . . . 30

Technical Queries . . . . 38

SHORT-WAVE SECTION —

Questions They Ask the B.B.C. . . . . 17

Short-wave Review . . . . 22

Logging of the Month . . . . 24

1941 10

CONTENTS:

CONSTRUCTIONAL —

1941 "Dandy" . . . . 7

Radiotronics Tone-Control Amplifier . . . . 13

Five-way Tone-Control Switch . . . . 30

TECHNICAL —

Battery Circuit Contest . . . . 5

Stability by Neutralisation . . . . 6

A Technical Explanation of Loading . . . . 9

A Fidelity Circuit from U.S.A. . . . . 10

Technical Queries . . . . 33

SHORT-WAVE SECTION —

Short-wave Review . . . . 18

Loggings of the Month . . . . 20

1941 11

CONTENTS:

CONSTRUCTIONAL —

Inter-office Communicator . . . . 5

Dual-wave Vibrator Set . . . . 7

"Nugget" Dual-waver . . . . 11

Handy 12-watt Amplifier . . . . 11

Elementary Signal Tracer . . . . 19

TECHNICAL —

Interesting Experiments with Amplifiers . . . . 21

How to Use Your Oscilloscope . . . . 23

Beat Frequency Oscillator . . . . 26

Answers to Queries . . . . 37

SHORT-WAVE SECTION —

Why They Change the B.B.C. Wavelengths . . . . 20

Notes from My Diary, by L. J. Keast . . . . 28

Loggings of the Month . . . . 30

Battery Circuit Contest Coupon . . . . 37

1941 12

CONTENTS:

CONSTRUCTIONAL —

Acoustic Compensated Superhet . . . . 5

"My Own" Fidelity Receiver for Locals . . . . 11

A Medium-cost Signal Tracer . . . . 17

1942 Version of "Tip-Top" . . . . 21

TECHNICAL —

Powerful Battery Set Circuit . . . . 15

The Meaning of Condenser Ratings . . . . 27

Answers to Queries . . . . 41

SHORT-WAVE SECTION —

Notes from My Diary, by L. J. Keast . . . . 30

Loggings of the Month . . . . 32

New Stations . . . . 36

TRADE NEWS —

Rothermel-Brush Pickups . . . . 24

New Amplion Speaker . . . . 14

1942

1942 01

CONTENTS:

CONSTRUCTIONAL -

Signal Tracer for Battery Operation . . . . 13

Countryman's Seven-valve Dual-waver . . . . 23

A Portable Battery Circuit . . . . 9

Renovating Radio Cabinets . . . . 10

TECHNICAL -

Direct-coupled Phase-changers . . . . 5

Five-way Tone Control . . . . 12

Fundamentals of the C.R.O. . . . . 15

Some Battery Set Considerations . . . . 20

SHORT-WAVE SECTION -

Notes from My Diary . . . . 24

Loggings of the Month . . . . 26

New Stations Heard . . . . 25

THE SERVICE PAGE -

Answers to Queries . . . . 34

Battery Circuit Contest Results . . . . 11

1942 02

CONTENTS:

CONSTRUCTIONAL -

Tried and Tested One-valver . . . . 5

Detector Unit for Amplifiers . . . . 17

Re-building Radio Batteries . . . . 19

Alternative Bias Amplifier . . . . 21

TECHNICAL -

Victorian Champion Amplifier . . . . 9

Two Effective Battery Circuits . . . . 11

Baffling the Loud-speaker . . . . 14

Crystals for Frequency Control . . . . 16

The Reduction of Harmonic Distortion . . . . 22

SHORT-WAVE SECTION -

Short-wave Review . . . . 24

Tokyo's Broadcast Propaganda . . . . 25

The Month's Loggings . . . . 26

New Stations . . . . 26

Latest Loggings . . . . 28

THE SERVICE PAGE -

Wanted - Old Transmitting Valves . . . . 18

Answers to Queries . . . . 30

1942 03

CONTENTS:

CONSTRUCTIONAL -

"Little Companion" . . . . 5

TECHNICAL -

Economy in Amplifier Design . . . . 13

Copper Wire Production . . . . 14

Harmonics in Reproduction . . . . 15

SHORT-WAVE SECTION -

Breaking into DX . . . . 22

Short-wave Review . . . . 24

New Stations . . . . 25

Loggings of the Month . . . . 26

THE SERVICE PAGES -

Guide to Back Numbers . . . . 18

Answers . . . . 30

1942 04

CONTENTS:

CONSTRUCTIONAL -

The Latest Signal Tracer . . . . 5

High Fidelity Amplifier . . . . 11

TECHNICAL -

Test Bench Arrangement . . . . 16

"Radio Step by Step"- Part 1 . . . . 18

SHORT-WAVE SECTION -

Contempt for Tokyo Propaganda . . . . 17

Short-wave Review . . . . 20

New Stations . . . . 21

Loggings of the Month . . . . 22

THE SERVICE PAGES -

Answers . . . . 26

1942 05

CONTENTS:

CONSTRUCTIONAL -

Adding A.V.C. to "Little Companion" . . . . 5

TECHNICAL -

Strange Theories and Facts . . . . 6

The Alignment of Modern Receivers . . . . 10

Radio Step By Step (Part 2) . . . . 15

The Triplex Single . . . . 18

SHORT-WAVE SECTION -

Short-Wave Review . . . . 20

New Stations . . . . 21

Loggings of the Month . . . . 22

THE SERVICE PAGES -

Answers . . . . 26

1942 06

CONTENTS:

CONSTRUCTIONAL -

Circuit for a Two-valve Portable Set . . . . 15

Simple Set Testing without Meters . . . . 18

TECHNICAL -

Tone Compensation for Scale Distortion . . . . 5

The Construction and Operation of Meters . . . . 7

A Battery Quiz . . . . 9

Technical Press does a Vital Job . . . . 11

Dealing with the Problem of Instability . . . . 12

A Radio Crossword Puzzle . . . . 14

Radio Step by Step (Part 3) . . . . 16

SHORT-WAVE SECTION -

Short-wave Review . . . . 20

New Stations . . . . 21

Loggings of the Month . . . . 22

THE SERVICE PAGES -

Answers . . . . 26

1942 07

CONTENTS:

CONSTRUCTIONAL -

Interesting Circuit Suggestions . . . . 15

Wave Trap to Improve Sensitivity . . . . 18

TECHNICAL -

About Screws and Screw-Threads . . . . 5

Radio Step by Step - Part 4. . . . . 7

Modern Set Building Methods . . . . 9

SHORT-WAVE SECTION -

Short-wave Review . . . . 19

Loggings of the Month . . . . 19

New Stations . . . . 22

THE SERVICE PAGES -

Answers . . . . 26

1942 08

CONTENTS:

CONSTRUCTIONAL -

A New Version of "Little Companion" . . . . 5

Making Most of the Milliammeter . . . . 9

TECHNICAL -

Why no Technical Radio in Programmes? . . . . 6

A New Light Source . . . . 14

Some Notes on Servicing Vibrator Sets . . . . 15

Radio Step by Step - Part 5 . . . . 18

Parts of Maintenance of Receivers . . . . 24

SHORT-WAVE SECTION -

Short-Wave Review . . . . 20

Loggings of the Month . . . . 22

New Stations . . . . 23

THE SERVICE PAGES -

Answers . . . . 26

1942 09

CONTENTS:

CONSTRUCTIONAL -

The "Victory Set" . . . . 5

How to Make a Metal Chassis . . . . 16

TECHNICAL -

Great News for Enthusiasts . . . . 11

Fresh Ideas in Circuits - No. 3 . . . . 12

Radio Step by Step - Part 6 . . . . 15

Points About Aerial Efficiency . . . . 24

SHORT-WAVE SECTION -

Short-Wave Review . . . . 18

Loggings of the Month . . . . 20

Stop Press . . . . 22

THE SERVICE PAGES -

Answers . . . . 26

1942 10

CONTENTS:

CONSTRUCTIONAL -

Victory Mantel Model . . . . 5

TECHNICAL -

Forming the Amplifier Circle . . . . 7

Simple Hi-Fi Circuit . . . . 9

Carrier-Current Experiments . . . . 13

Radio Step by Step - Part 7 . . . . 17

Origin of the Oscillograph . . . . 19

SHORT-WAVE SECTION -

Short-Wave Review . . . . 20

New Stations . . . . 20

Loggings of the Month . . . . 22

SERVICE PAGES -

Answers . . . . 26

1942 11

CONTENTS:

CONSTRUCTIONAL -

Super Quality Dual-Wave Design . . . . 7

TECHNICAL -

Little Known Industrial Equipment . . . . 5

The Weak Links in Reproduction . . . . 9

Handy Feedback System . . . . 11

Better Detection for the T.R.F. . . . . 13

Further Circuit Suggestions . . . . 14

Tolerances in Set Design . . . . 15

Radio Step by Step - Part 8 . . . . 18

SHORT-WAVE SECTION -

Short-wave Review . . . . 20

New Stations . . . . 21

Loggings of the Month . . . . 22

THE SERVICE PAGES -

Answers . . . . 26

1942 12

CONTENTS:

CONSTRUCTIONAL -

Inter. Switch for Fidelity . . . . 5

TECHNICAL -

Interesting Ideas in Circuits . . . . 9

Added Range for Battery Sets . . . . 11

A Dictionary of Radio Terms . . . . 13

Radio in Development of Air Transport . . . . 17

Radio Step by Step - Part 9 . . . . 18

SHORT-WAVE SECTION -

Aussie News for U.S. Listeners . . . . 7

Short-Wave Review . . . . 20

New Stations . . . . 21

Loggings of the Month . . . . 22

THE SERVICE PAGES -

New Prices for Rola Speakers and Repairs . . . . 16

Answers . . . . 26

1943

1943 01

CONTENTS:

CONSTRUCTIONAL -

Standard 4-Watt Amplifier . . . . 5

TECHNICAL -

Interesting Ideas in Circuits . . . . 7

Modern Gramophone Pick-ups . . . . 9

Substitute Valve Arrangements . . . . 11

Evolution of the Detector . . . . 13

Another Quality Set Design . . . . 14

A Dictionary of Radio Terms . . . . 16

Radio Step by Step - Part 10 . . . . 20

The "Magneto" Spacelicker . . . . 23

SHORT-WAVE SECTION -

Short-Wave Review . . . . 21

New Stations . . . . 22

Loggings of the Month . . . . 24

THE SERVICE PAGES -

Answers . . . . 26

1943 02

CONTENTS:

CONSTRUCTIONAL -

A De Luxe Signal Tracer . . . . 5

Power for the Battery Amplifier . . . . 9

S.W. Converter for Battery Sets . . . . 15

TECHNICAL -

Ideas in Circuits . . . . 11

Evolution of the Tuning Condenser . . . . 13

Substitute Valves - Part 2 . . . . 16

Radio Step · by Step - Part 11 . . . . 17

Resistor and Condenser Boxes . . . . 18

Selections of Crystals for Crystal Sets . . . . 19

SHORT-WAVE SECTION -

Co-Prosperity in Formosa and Korea . . . . 20

Short-Wave Review . . . . 21

New Stations . . . . 23

Loggings of the Month . . . . 24

THE SERVICE PAGES -

Answers . . . . 26

1943 03

CONTENTS:

CONSTRUCTIONAL -

High Tension for Battery Sets . . . . 13

TECHNICAL -

Pentodes for Power ... But Triodes for Tone . . . . 6

Hints for Better Soldering . . . . 10

Evolution of the Loudspeaker . . . . 11

Radio Step by Step - Part 12 . . . . 17

Ideas for Modern Circuits . . . . 19

SHORTWAVE SECTION -

Shortwave Review . . . . 20

New Stations . . . . 22

Loggings of the Month . . . . 23

THE SERVICE PAGES -

Answers . . . . 26

1943 04

CONTENTS:

CONSTRUCTIONAL -

The "S.R.L. Special" Amplifier . . . . 5

TECHNICAL -

Audio Frequency Coupling Methods . . . . 7

Ideas in Circuit Design . . . . 10

Gremlins Now Troubling Radio . . . . 12

Evolution of the Radio Valve . . . . 13

Are Deaf Aids Radio Business? . . . . 15

Can There be Radio to the Planets? . . . . 18

Radio Step by Step - Part 13 . . . . 19

SHORTWAVE SECTION -

Shortwave Review . . . . 20

New Stations . . . . 22

Loggings of the Month . . . . 23

THE SERVICE PAGES -

Answers . . . . 26

1943 05

CONTENTS:

CONSTRUCTIONAL -

Novel Designs for Amplifier . . . . 5

Receiver Using Junk Parts . . . . 11

TECHNICAL -

Radio Frequency Coupling Methods . . . . 7

Television Tubes . . . . 9

Army Instruction "A La Yank!" . . . . 12

Ideas for Modern Circuits . . . . 13

Modified Views on Short-Wave Propagation . . . . 14

Evolution of the Tuning Coil . . . . 17

Radio Step by Step - Part 14 . . . . 18

SHORTWAVE SECTION -

Shortwave Review . . . . 20

New Stations . . . . 22

Allied and Neutral Countries Shortwave Schedule . . . . 22

THE SERVICE PAGES -

Answers . . . . 26

1943 06

CONTENTS:

CONSTRUCTIONAL -

Simple Battery Set . . . . 9

TECHNICAL -

Electronics in Medicine . . . . 5

Ideas from Modern Circuits . . . . 11

Television or Facsimile . . . . 13

Substitute Output Valves . . . . 14

Radio Step by Step . . . . 20

SHORT-WAVE SECTION -

Short-wave Review . . . . 21

New Stations . . . . 21

Notes and Observations . . . . 22

Allied and Neutral Countries Short-wave Schedules . . . . 24

THE SERVICE PAGES -

Answers . . . . 26

1943 07

CONTENTS:

CONSTRUCTIONAL -

Power Amplifier for Batteries . . . . 5

T.R.F. for Local Hi-Fi . . . . 7

Forty-Watt Amplifier . . . . 11

Battery Charger from Speaker Parts . . . . 13

Design for Transposed Aerials . . . . 15

TECHNICAL -

With Radiomen of the Air Force . . . . 6

Television . . . . 9

The Effects of Load Impedance . . . . 17

SHORT-WAVE SECTION -

Short-wave Review . . . . 21

Notes and Observations . . . . 22

New Stations . . . . 23

Allied and Neutral Countries Short-wave Schedules . . . . 24

THE SERVICE PAGES -

Answers . . . . 26

1943 08

CONTENTS:

CONSTRUCTIONAL -

Design for 20-Watt Amplifier . . . . 5

Test Panel for Vibrator Testing . . . . 7

TECHNICAL -

Common Errors of Amplifier Practice . . . . 11

The Measurement of Resistance . . . . 15

Headphones for Quality Reproduction . . . . 17

Radio Step by Step . . . . 18

SHORTWAVE SECTION -

Shortwave Review . . . . 21

Notes and Observations . . . . 22

New Stations . . . . 23

Allied and Neutral Countries Shortwave Schedules . . . . 24

THE SERVICE PAGES -

Answers . . . . 26

1943 09

CONTENTS:

CONSTRUCTIONAL -

Design for Post-War Receiver . . . . 9

Simple Wheatstone Bridge . . . . 15

Super Space-Licker Two . . . . 19

TECHNICAL -

Electronics in Medicine . . . . 5

Full Story of Inverse Feedback . . . . 10

The Story of the Electrolytic Condenser . . . . 17

Resistors - Resistance . . . . 18

SHORTWAVE SECTION -

Shortwave Review . . . . 20

Notes and Observations . . . . 21

New Stations . . . . 22

Allied and Neutral Countries Shortwave Schedules . . . . 23

THE SERVICE PAGES -

Answers . . . . 26

1943 10

CONTENTS:

CONSTRUCTIONAL -

Design for a Simple A.C. Bridge . . . . 5

A Receiver Circuit for Utopia . . . . 9

Building a High-Grade Audio Transformer . . . . 15

TECHNICAL -

History of the Cathode Ray Oscilloscope . . . . 7

Revivals in Radio Practice . . . . 13

Servicing Suggestions for A.C.-D.C. Sets . . . . 18

SHORTWAVE SECTION -

Shortwave Review . . . . 20

Notes and Observations . . . . 21

Allied and Neutral Countries Shortwave Schedules . . . . 23

New Stations . . . . 25

THE SERVICE PAGES -

Answers . . . . 26

1943 11

CONTENTS:

CONSTRUCTIONAL -

Receiver to Operate from 32-Volts . . . . 7

TECHNICAL -

Servicemen get Radio Parts Priority . . . . 5

Future Applications of Frequency Modulation . . . . 9

Design of Screening for Receivers . . . . 11

Are Multiple Valves a Good Proposition? . . . . 13

The Limits to Audio Amplification . . . . 15

The Construction and Amplification of Pick-ups . . . . 16

Speaker Location for High-Power Amplifiers . . . . 18

Common Errors of Radio Testing . . . . 19

SHORTWAVE SECTION -

Shortwave Review . . . . 20

Notes and Observations . . . . 21

New Stations . . . . 22

THE SERVICE PAGES -

Answers . . . . 26

1943 12

CONTENTS:

CONSTRUCTIONAL -

Five-Way Tone Controls . . . . 9

New Design for Folded Horn . . . . 15

TECHNICAL -

Electronics in Industry . . . . 5

Operation of Output Valves . . . . 11

Guide to Back Numbers . . . . 13

High Efficiency Aerial for Shortwaves . . . . 17

Speaker Location for High-Powered Amplifiers . . . . 18

SHORTWAVE SECTION -

Shortwave Review . . . . 20

Notes and Observations . . . . 21

New Stations . . . . 22

THE SERVICE PAGES -

Answers . . . . 26

1944

1944 01

CONTENTS:

CONSTRUCTIONAL -

Simple Vacuum Tube Voltmeter . . . . 5

Hi-Fi Gramophone Pick-up . . . . 9

N.Z. All-Wave Two . . . . 13

Ribbon-Type Microphone . . . . 17

TECHNICAL -

Measurement of Inductance . . . . 7

Radio Nails for Plywood . . . . 14

Band Pass and Pre-selector Unit . . . . 15

Review of "Radio World" . . . . 19

SHORTWAVE SECTION -

Short-wave Review . . . . 20

Short-wave Notes and Observations . . . . 21

New Stations . . . . 20

Loggings of the Month . . . . 23

THE SERVICE PAGES -

Answers . . . . 26

1944 02

CONTENTS:

CONSTRUCTIONAL -

What is the Most Suitable Circuit for Utility Receiver? . . . . 7

Make Your Own Soldering Iron . . . . 11

TECHNICAL -

The History of Piezo Crystals . . . . 5

The Case for the Single Ender . . . . 9

Some Thoughts on Post-War Radio . . . . 13

Super Quality Amplifier Design . . . . 15

Proper Operating Conditions for Valves . . . . 16

SHORTWAVE SECTION -

Shortwave Review . . . . 20

Shortwave Notes and Observations . . . . 21

New Stations . . . . 22

Loggings of the Month . . . . 23

THE SERVICE PAGES -

Answers . . . . 26

1944 03

CONTENTS:

CONSTRUCTIONAL -

Design for Utility Circuit . . . . 6

The Three-Two Special . . . . 19

TECHNICAL -

What is the Future of Walkie-Talkie? . . . . 5

A Hundred Million Volts! . . . . 9

Radio in the Newspaper Headings . . . . 10

Electronics in Modern Music . . . . 11

Proper Methods of Using Valves . . . . 13

Technical Ideas from the Talkies . . . . 17

SHORTWAVE SECTION -

Shortwave Review . . . . 20

Shortwave Notes and Observations . . . . 21

New Stations . . . . 20

Loggings of the Month . . . . 23

THE SERVICE PAGES -

Answers . . . . 26

1944 04

CONTENTS:

CONSTRUCTIONAL -

Standard Features for Utility . . . . 6

Avoiding the H.T. Transformer . . . . 7

Electronics in Modern Music . . . . 9

"Mystery" Crystal Set . . . . 17

TECHNICAL -

Ideals in DX Sets . . . . 5

Simple Volume Expander Circuit . . . . 11

Reviving Dry Batteries Electrically . . . . 13

Pentodes and Similar Power Valves . . . . 14

SHORTWAVE SECTION -

Shortwave Review . . . . 20

New Stations . . . . 20

Shortwave Notes and Observations . . . . 21

Loggings . . . . 23

THE SERVICE PAGES -

Answers . . . . 26

1944 05

CONTENTS:

CONSTRUCTIONAL -

Novel Detector in Contest Entry . . . . 6

An Amplifier Beyond Reproach? . . . . 11

TECHNICAL -

The Tropic-Proofing Era . . . . 5

A Serviceman's Lament . . . . 7

The Multi-Vibrator and its Uses . . . . 9

Radio Aids to U.S. Navigation . . . . 12

Technical Data on Valve Cathodes . . . . 14

Radio Heating is a Modern Wonder . . . . 17

Wider Tone Control . . . . 18

Serviceman Licences Issued . . . . 19

SHORTWAVE SECTION -

Shortwave Review . . . . 20

New Stations . . . . 20

Shortwave Notes and Observations . . . . 21

Loggings . . . . 23

THE SERVICE PAGES -

Answers . . . . 26

1944 06

CONTENTS:

CONSTRUCTIONAL -

Utility Battery-Operated Set . . . . 6

A Long-Range Utility Receiver . . . . 8

Direct-Coupled Utility Design . . . . 10

TECHNICAL -

Details of Victorian Amplifier Contest . . . . 5

Some New Ideas from Modern Circuits . . . . 11

Output Transformer Construction . . . . 13

Adjustable I.F. Selectivity . . . . 16

A.B.C. of Frequency Modulation . . . . 19

U.S. Claims Invention of Radar . . . . 20

Signal Officers in the Making . . . . 21

SHORTWAVE REVIEW -

Notes From My Diary . . . . 23

New Stations . . . . 23

Shortwave Notes and Observations . . . . 24

THE SERVICE PAGES -

Answers . . . . 26

1944 07

CONTENTS:

CONSTRUCTIONAL -

Simple Vacuum Voltmeter . . . . 7

Home Built Communications Set . . . . 14

TECHNICAL -

R.A.A.F. Jungle Broadcaster . . . . 5

Winning Essay . . . . 8

Design Considerations for Amplifiers . . . . 10

Finer Points About Pick-ups . . . . 19

Distortion - Its Cause and Cure . . . . 20

SHORTWAVE REVIEW -

Notes From My Diary . . . . 23

New Stations . . . . 23

Short Wave Notes and Observations . . . . 24

THE SERVICE PAGES -

Answers . . . . 26

1944 08

CONTENTS:

CONSTRUCTIONAL -

Home-Made Hi-Fi Pick-up . . . . 5

Wide Range Audio Frequency Oscillator . . . . 7

A Useful A.C. Bridge Circuit . . . . 13

V.T. Voltmeter for Audio Work . . . . 18

TECHNICAL -

The Accuracy of Ohmmeters . . . . 9

Screening by Metal Spray . . . . 11

Frequency-Controlling Crystals . . . . 17

Bass Booster for Amplifiers . . . . 19

SHORTWAVE REVIEW -

Notes From My Diary . . . . 20

New Stations . . . . 20

Shortwave Notes and Observations . . . . 21

Shortwave Schedules . . . . 24

THE SERVICE PAGES -

Answers . . . . 26

1944 09

CONTENTS:

CONSTRUCTIONAL -

The "Ferrier" Super Crystal Receiver . . . . 10

A Non-Microphonic Volume-Expander Circuit . . . . 13

Simple and Effective Valve Tester . . . . 15

TECHNICAL -

N.Z. Radiomen to go to Britain . . . . 5

The Design of Direct-Coupled Amplifiers . . . . 6

Eclipse Staff Holds Amplifier Contest . . . . 11

A Buzzer Makes an Handy Multivibrator . . . . 12

Radio Frequency for Industrial Heating . . . . 16

SHORTWAVE REVIEW -

Notes From My Diary . . . . 23

New Stations . . . . 23

Shortwave Notes and Observations . . . . 24

THE SERVICE PAGES -

Answers . . . . 26

1944 10

CONTENTS:

CONSTRUCTIONAL -

Something Fresh in Amplifiers . . . . 5

"Novochord" is Electronic Piano . . . . 7

Pick-Up Principles and Practice . . . . 13

Cathode-Follower Amplifier Design . . . . 16

Inductance and Capacity Meter . . . . 17

TECHNICAL -

Cathode Follower Output Stage . . . . 11

Iconoscope - The Electron "Gun" . . . . 21

SHORTWAVE REVIEW -

Notes of My Diary . . . . 23

Shortwave Notes and Observations . . . . 24

New Stations . . . . 24

THE SERVICE PAGES -

Answers . . . . 26

1944 11

CONTENTS:

CONSTRUCTIONAL -

Repairing and Adjusting Vibrators . . . . 22

A Receiver Without Gang . . . . 23

Alignment by Wobbler . . . . 9

Pick-up Principles and Practice . . . . 11

TECHNICAL -

Mutton Good at Amplifiers . . . . 5

Possibilities of Frequency Modulation . . . . 7

Curves - Straight or Bent . . . . 13

Valves in Theory and Practice . . . . 16

Research Into Phase-Changers . . . . 21

The Future for Recordings . . . . 24

SHORTWAVE REVIEW -

Notes from My Diary . . . . 27

New Stations . . . . 27

Shortwave Notes and Observations . . . . 28

Loggings . . . . 31

THE SERVICE PAGES -

Answers . . . . 33

1944 12

CONTENTS:

CONSTRUCTIONAL -

Contest Was Keen . . . . 5

Pick-up Principles . . . . 13

Victorian Championship . . . . 17

TECHNICAL -

Aesthetics of Reproduction . . . . 19

Music While You Work . . . . 26

SHORTWAVE REVIEW -

Shortwave Notes and Observations . . . . 29

Notes From My Diary . . . . 31

New Stations . . . . 33

THE SERVICE PAGES -

Answers . . . . 34

1945

1945 01

CONTENTS

CONSTRUCTIONAL —

Power Transformers . . . . 5

TECHNICAL —

Tales of Phase Inverters . . . . 11

In Defence of "A504" . . . . 13

The Telechrome . . . . 17

Factors in High Fidelity . . . . 19

Acoustic Typewriters . . . . 25

SHORTWAVE REVIEW —

The Month's Loggings . . . . 29

Notes From My Diary . . . . 32

New Stations . . . . 31

THE SERVICE PAGES —

Answers . . . . 34

1945 02

CONTENTS

CONSTRUCTIONAL —

An Alternating Design . . . . 5

Make Your Own Selenium Cell . . . . 17

TECHNICAL —

Square Wave Testing . . . . 11

Aesthetics of Reproduction . . . . 14

Filing Your Resistances . . . . 15

A Short Course in Radio Fundamentals . . . . 20

Voltage Doubling . . . . 25

The Miller Effect . . . . 27

SHORTWAVE REVIEW —

Notes From My Diary . . . . 30

New Stations . . . . 31

Loggings . . . . 32

THE SERVICE PAGES —

Answers . . . . 34

1945 03

CONTENTS

CONSTRUCTIONAL —

A Circuit of D.C. Power . . . . 5

Reflex for Results . . . . 11

A Handy Tester Design . . . . 13

TECHNICAL —

Practical Aspects of High Fidelity . . . . 6

A Short Course in Radio Fundamentals — Part 2 . . . . 14

The Amplifier Competition . . . . 18

Cathode Ray Tubes . . . . 19

Moving Coil Meters . . . . 25

Post-War Receiver Features . . . . 29

SHORTWAVE REVIEW —

Notes From My Diary . . . . 30

New Stations . . . . 31

Loggings . . . . 32

The Service Pages —

The Service Pages . . . . 34

1945 04

CONTENTS

CONSTRUCTIONAL —

Balanced Linear V.T.V.M. . . . . 5

TECHNICAL —

Continental Design . . . . 11

Contrast Without Distortion . . . . 15

Aegis Components Do War Job . . . . 17

A Short Course In Radio Fundamentals - Part 3 . . . . 18

Technical Review from U.S.A. . . . . 25

Production of Audio Frequencies . .. . . . . .. .. . 27

SHORTWAVE REVIEW —

Notes From My Diary . . . . 30

New Stations . . . . 31

Loggings . . . . 32

The Service Pages —

The Service Pages . . . . 34

1945 05

CONTENTS

CONSTRUCTIONAL —

An Improved Reflex Circuit . . . . 7

One-valve Test Oscillator . . . . 9

A Sound Design for an Audio Oscillator . . . . 13

TECHNICAL —

Tolerance in Set Design . . . . 5

A High-Fidelity Hint . . . . 11

Building the A.I.F. Broadcaster . . . . 12

A Short Course in Radio Fundamentals — Part 4 . . . . 16

New Dutch Valves . . . . 22

SHORTWAVE REVIEW —

Notes From My Diary . . . . 23

New Stations . . . . 24

Loggings and Changes . . . . 25

THE SERVICE PAGES —

The Service Pages . . . . 26

1945 06

CONTENTS

CONSTRUCTIONAL —

A Well-tried Reflex Circuit . . . . 20

TECHNICAL —

Radio Location - War-winner . . . . 5

Walkie-Talkies in Peace . . . . 11

Wireless Rules the Waves . . . . 13

A Short Course in Radio Fundamentals - Part 5 . . . . 16

Fragmentary Crystals . . . . 19

History and Theory of Microphones . . . . 21

Another Hint for High Fidelity . . . . 24

Latest Technical Notes from New York . . . . 25

SHORTWAVE REVIEW —

Notes From My Diary . . . . 26

New Stations . . . . 27

Loggings . . . . 28

THE SERVICE PAGES —

Answers . . . . 30

1945 07

CONTENTS

CONSTRUCTIONAL —

Wide Range Resistance and Capacity Meter . . . . 9

Tone Compensation Amplifier . . . . 20

TECHNICAL —

Radio in America . . . . 5

Theory of Oscillation . . . . 17

Power Supply Filters . . . . 24

Straede's Amplifier Contest . . . . 24

A Short Course in Radio Fundamentals . . . . 26

Latest Technical Notes from New York . . . . 29

SHORTWAVE REVIEW —

Notes From My Diary . . . . 30

New Stations . . . . 31

Loggings . . . . 32

THE SERVICE PAGES —

The Service Pages . . . . 34

1945 08

CONTENTS

CONSTRUCTIONAL —

Making Paper Condensers . . . . 11

Small Hints for Big Effects . . . . 15

TECHNICAL —

Radio for Model Planes . . . . 5

Eliminating Hum . . . . 6

Trade With America . . . . 7

A Short Course in Radio Fundamentals . . . . 18

Decibel — a Logarithmic Function . . . . 22

The Theory Behind Proper Amplifier Design . . . . 26

SHORTWAVE REVIEW —

Notes From My Diary . . . . 30

New Stations . . . . 32

Loggings . . . . 32

THE SERVICE PAGES —

The Service Pages . . . . 34

1945 09

CONTENTS

CONSTRUCTIONAL —

A Camera Case Portable . . . . 15

Getting the Best from a Pick-up . . . . 17

TECHNICAL —

An Answer to the Cathode Follower . . . . 11

Theory Behind Proper Amplifier Design — Part 2 . . . . 18

Probe Adapter for the V.T.V.M. . . . . 24

Future Appreciations of Radio . . . . 28

Starting in the Radio Business . . . . 5

Standard Valve Types for 1945 . . . . 7

Victorian Amplifier Contest . . . . 7

SHORTWAVE REVIEW —

Notes from My Diary . . . . 30

New Stations . . . . 31

Loggings . . . . 32

THE SERVICE PAGES —

The Service Pages . . . . 34

1945 10

CONTENTS

TECHNICAL —

Our Future Policy . . . . 5

Honour Roll . . . . 7

Amateur Radio . . . . 9

The Transitron Oscillator . . . . 11

Vibrating Power Supplies . . . . 17

Radar's Work With the Navy . . . . 21

The Theory Behind Proper Amplifier Design . . . . 24

SHORTWAVE SECTION —

Notes From My Diary . . . . 30

The Month's Loggings . . . . 32

New Stations . . . . 33

THE SERVICE PAGES —

The Service Pages . . . . 34

1945 11

CONTENTS

CONSTRUCTIONAL —

Stereophonic Amplifier . . . . 7

An Electric Filter . . . . 11

"Aegis" Little Companion Mantel Model . . . . 15

TECHNICAL —

Victorian Amplifier Contest . . . . 5

Television on Rental Basis . . . . 26

Ham Notes — Calling CQ! . . . . 27

SHORTWAVE REVIEW —

Notes From My Diary . . . . 30

New Stations . . . . 32

THE SERVICE PAGES —

Answers . . . . 34

1945 12

CONTENTS

CONSTRUCTIONAL —

The "Lamb" Noise Suppressor . . . . 17

TECHNICAL —

Electro Dynamics Are Obsolete . . . . 5

The Hammond Electric Organ . . . . 6

Hints About Using A.V.C. . . . . 11

Mutton the Winner . . . . 15

Panoramic Reception . . . . 27

Ham Notes — Calling CQ . . . . 27

SHORTWAVE REVIEW —

Notes from My Diary . . . . 30

New Stations . . . . 31

THE SERVICE PAGES —

Answers . . . . 34

1946

1946 01

CONSTRUCTIONAL —

The Champion Amplifier . . . . 5

Simple Service Oscillator . . . . 7

Home Made Filter Chokes . . . . 17

TECHNICAL —

Cathode Follower Tests . . . . 13

Trends in Set Design . . . . 21

U.S. Radio Newsletter . . . . 22

Principles of Radar . . . . 23

Duplex Speakers for Fidelity . . . . 25

Ham Notes — Calling CQ . . . . 27

SHORTWAVE REVIEW —

Notes From My Diary . . . . 30

New Stations . . . . 33

THE SERVICE PAGES —

Answers . . . . 34

1946 02

CONSTRUCTIONAL —

Circuits — The Sober way . . . . 7

Improving DX Performance . . . . 13

TECHNICAL —

New "Ham" Technique . . . . 5

"Wireless Set Number Ten" . . . . 14

Signal Tracer in Miniature . . . . 15

How Radio Signals are Broadcast . . . . 17

The Growth of the Radar Chain . . . . 23

Ham Notes — Calling CQ . . . . 27

SHORTWAVE REVIEW —

Notes From My Diary . . . . 31

New Stations . . . . 32

THE SERVICE PAGES —

Answers . . . . 34

1946 03

CONSTRUCTIONAL —

The "VK2NO — V6" . . . . 5

TECHNICAL —

Using the "1852" . . . . 13

1852 Characteristics . . . . 14

Using Available Gangs . . . . 19

New Permag Speakers . . . . 23

Radio Trade Notes . . . . 25

Ham Notes — Calling CQ . . . . 27

SHORTWAVE REVIEW —

Notes From My Diary . . . . 31

New Stations . . . . 32

THE SERVICE PAGES —

Answers . . . . 34

1946 04

CONSTRUCTIONAL —

50-Watt Phone Transmitter . . . . 19

TECHNICAL —

Efficient Aerials for VHF . . . . 5

Improved Modulation Oscillator . . . . 7

Long Range Two Valver . . . . 9

Polysterene for Amateurs . . . . 11

My Own . . . . 15

The Proximity Radio Fuse . . . . 17

Crystals Will Not Amplify . . . . 21

30-Watt Modulation for Hams . . . . 23

Dismal Future for Radio Trade . . . . 25

Ham Notes . . . . 27

SHORTWAVE REVIEW —

Notes From My Diary . . . . 31

New Stations . . . . 32

THE SERVICE PAGES —

Answers . . . . 34

1946 05

CONSTRUCTIONAL —

Metropolis Four . . . . 23

The "Ferrotune" Superheterodyne . . . . 37

TECHNICAL —

What of the Future of "Ham Radio"? . . . . 5

Simple Impedance Measurements . . . . 9

The Channel Analyser . . . . 15

Loud Speaker Baffling Systems . . . . 31

A Decade of Good Battery Circuits . . . . 34

Reception Experiments . . . . 40

Ham Notes . . . . 41

PERSONAL —

Pages . . . . 5, 7, 11, 17, 20, 21, 33, 49

SHORTWAVE REVIEW —

Notes From My Diary . . . . 45

New Stations . . . . 46

Loggings . . . . 47

THE SERVICE PAGES —

Answers . . . . 50

1946 06

CONSTRUCTIONAL —

Receiving Beam for "Ten" . . . . 7

TECHNICAL —

Post-war American Receiver . . . . 5

Improved Signal Tracer . . . . 6

Exciter Unit for 50 Mc. . . . . 11

Remarkable Possibilities in 2 Mc. I.F. . . . . 15

Do You Want to be a Ham? . . . . 18

Is That Your Bid? . . . . 20

Understand Valve Curves . . . . 21

More About the Hammond Organ . . . . 28

Experiences with Noise Suppression . . . . 29

Ham Notes . . . . 31

SHORTWAVE REVIEW —

Notes From My Diary . . . . 38

Shortwave Stations of the World . . . . 38

THE SERVICE PAGES —

Answers . . . . 42

1946 07

CONSTRUCTIONAL —

The Latest in Direct Coupling . . . . 7

"The Spotter" . . . . 11

Powerful 8-Valve Circuit . . . . 17

An Ideal Single-Ender . . . . 21

TECHNICAL —

Advantages of Ferrotune . . . . 5

Politics of Ham Radio . . . . 15

Servicing A.C. Receivers . . . . 20

Estimating Receiver Performance . . . . 23

Operating the 807 . . . . 27

Ham Notes . . . . 31

SHORTWAVE REVIEW —

Notes From My Diary . . . . 38

Shortwave Stations of the World . . . . 39

THE SERVICE PAGES —

Answers . . . . 42

1946 08

CONSTRUCTIONAL —

A Handy Multi-Meter Kit . . . . 7

"All-Wave" Band Spread Two . . . . 13

The "Ferrotune" Reinartz . . . . 17

Sky-Cruiser Battery Four . . . . 21

The Fidelity Broadcast . . . . 25

TECHNICAL —

Outlook for "Ham" Market . . . . 5

Make Your Own "Stroboscope" . . . . 15

Getting Started at Set-Building . . . . 29

Ham Notes - Calling CQ . . . . 31

SHORTWAVE REVIEW —

Notes From My Diary . . . . 38

New Stations . . . . 39

THE SERVICE PAGES —

Answers . . . . 42

1946 09

CONSTRUCTIONAL —

A Band Checker . . . . 5

A Regenerative Pre-Selector Unit . . . . 9

The "Sky-Hawk Four" . . . . 29

TECHNICAL —

A Effective Noise Limiter . . . . 11

More About Ham Politics . . . . 13

Getting Started at Set Building (Part 2) . . . . 15

The Connoisseur . . . . 19

The Importance of Lay Out . . . . 27

Fault Finding by Substitutions . . . . 28

Ham Notes . . . . 31

SHORTWAVE REVIEW —

Notes From My Diary . . . . 38

Shortwave Stations of the World . . . . 40

THE SERVICE PAGES —

Speedy Queries . . . . 42

1946 10

CONSTRUCTIONAL —

A Practical Circuit . . . . 7

An A.C. Bridge . . . . 21

TECHNICAL —

"Sparks" as a Career . . . . 5

Technical Notes From Up North . . . . 11

Problems of Commercial Design . . . . 15

Dealing With Man-Made Static . . . . 25

Ham Papers . . . . 29

Calling CQ . . . . 31

Doings on "One-and-Threequarters" . . . . 33

DX Possible on "Six" . . . . 34

Bargains - and Where Encountered . . . . 35

Around the Six Metre Band . . . . 36

Night Flying in Daylight . . . . 37

SHORTWAVE REYIEW —

Notes From My Diary . . . . 38

Shortwave Stations of the World . . . . 39

THE SERVICE PAGES —

Answers . . . . 42

1946 11

CONSTRUCTIONAL —

"Ferrotune" Mantel Model . . . . 15

TECHNICAL —

A Really Good Amplifier . . . . 5

More Restrictions for Amateurs . . . . 7

A New Home for "Radio World" . . . . 9

Circuit for A.C. or Battery . . . . 11

Technical Radio in S. America . . . . 13

A Full Frequency Range Amplifier . . . . 18

To Deliver Forty Five Watts . . . . 19

Some Notes on the Care of Batteries . . . . 28

Calling CQ . . . . 31

SHORTWAVE REVIEW —

Notes for My Diary . . . . 38

Shortwave Schedules . . . . 40

THE SERVICE PAGES —

Answers . . . . 42

1946 12

CONSTRUCTIONAL —

High Quality Multimeter . . . . 5

Build Yourself an F.F.R. Amplifier . . . . 15

TECHNICAL —

Cracking the Oyster . . . . 11

Radiotron Applications Laboratory . . . . 26

Calling CQ . . . . 27

SHORTWAVE REVIEW —

Notes From My Diary . . . . 31

THE SERVICE PAGES —

Answers . . . . 34

1947

1947 01

CONTENTS

TECHNICAL —

Designing Battery Receivers . . . . 5

The Control of Tone . . . . 13

The Choice of I.F. Frequencies . . . . 19

Calling CQ . . . . 21

Further Restrictions for Hams . . . . 11

Australian Broadcasting Stations . . . . 26

SHORTWAVE REVIEW —

Notes from My Dairy . . . . 30

THE SERVICE PAGES —

Answers . . . . 34

1947 02

CONTENTS

TECHNICAL —

Trends in Design . . . . 5

High-Fidelity Pick-ups from England . . . . 9

The "F.F.R." 45-watt Amplifier . . . . 15

Two more "Connoisseur" Sets . . . . 21

Re-vamping the "F.S.6" . . . . 27

Calling CQ . . . . 33

SHORTWAVE REVIEW —

Notes from My Diary . . . . 38

THE SERVICE PAGES —

Answers . . . . 42

1947 03

CONTENTS

TECHNICAL —

Another Type of Beam Array . . . . 5

Electric-Acoustic Coupling . . . . 7

Quick Systematic Testing . . . . 13

Sensitive Four-Valve Circuit . . . . 17

Radio Frequency Chokes . . . . 27

The Truth About Television . . . . 30

SHORTWAVE REVIEW —

Notes from My Diary . . . . 38

THE SERVICE PAGES —

Answers . . . . 42

1947 04

CONTENTS

TECHNICAL —

Medical and Biological . . . . 7

Trends in Pick-up Developments . . . . 13

Easy Reflex Circuits . . . . 14

Visual Tuning Indicators . . . . 17

Printed Wiring Methods . . . . 29

A Relay from an old A.F. Transformer . . . . 31

SHORTWAVE REVIEW —

Notes From My Diary . . . . 38

THE SERVICE PAGES —

Answers . . . . 42

1947 05

CONTENTS

TECHNICAL —

Problems of Trade Discount . . . . 5

Double Superhet for Ham Use . . . . 9

Preamplifiers for Talkie Work . . . . 11

Starting a Radio Business . . . . 13

Visual Tuning Indicators . . . . 16

Photo-Electric Cells . . . . 24

Disposal Bargains — And Otherwise . . . . 26

Service Problems in U.S.A. . . . . 30

SHORTWAVE REVIEW —

Notes From My Diary . . . . 38

THE SERVICE PAGES —

Answers . . . . 42

1947 06

CONTENTS

TECHNICAL —

The "Six-Ten" . . . . 5

Unusual Condensers . . . . 13

Can You Answer These? . . . . 15

Car Radio . . . . 17

The "Voyager" . . . . 19

Teleconda 3 . . . . 27

Pepping up No. 4 Set . . . . 31

SHORTWAVE REVIEW —

Notes From My Diary . . . . 38

THE SERVICE PAGES —

Answers . . . . 42

1947 07

CONTENTS

TECHNICAL —

Natural Reproduction . . . . 5

Wave Traps . . . . 11

Great Circle Gadget . . . . 13

Grounded-Grid R.F. Stages . . . . 15

The "F.S.L." — Plus . . . . 18

Caravan Radio . . . . 20

"Little Wonder Two" . . . . 24

"Europa 5" . . . . 26

Technical Topics . . . . 29

SHORTWAVE REVIEW —

Notes From My Diary . . . . 38

THE SERVICE PAGES —

Answers . . . . 42

1947 08

CONTENTS

CONSTRUCTIONAL —

"High Quality Six" . . . . 9

"Q-Plus" . . . . 17

TECHNICAL —

Ham Radio at Sea . . . . 5

Bias for Battery Sets . . . . 7

English Quality Amplifier . . . . 13

Radio on H.M.S. "Vanguard" . . . . 21

Radio Reflections from Shooting Stars . . . . 24

Plastics to Revolutionise Television . . . . 26

International DX Contest . . . . 28

SHORTWAVE REVIEW —

Notes From My Diary . . . . 38

THE SERVICE PAGES —

Answers . . . . 42

1947 09

CONTENTS

CONSTRUCTIONAL —

Signal Tracer for Service . . . . 7

Build Your Own Oscillator . . . . 9

TECHNICAL —

Anisotropic Alnico . . . . 17

Beams, Beams, Beautiful Beams . . . . 21

The Kingsley "K.S.9'er" . . . . 23

A Review of Ferrotune . . . . 25

Ideal Broadcast Station Console . . . . 32

Among Our Readers . . . . 34

Calling CQ . . . . 41

SHORTWAVE REVIEW —

Notes From My Diary . . . . 46

THE SERVICE PAGES —

Answers . . . . 50

1947 10

CONTENTS

CONSTRUCTIONAL —

"Snug 5" . . . . 5

TECHNICAL —

Kingsley Equipment for U.H.F. . . . . 11

Adjusting the Dipole . . . . 27

"Rural 4" . . . . 15

Servicing by Signal Tracer . . . . 29

Calling "C.Q." . . . . 33

SHORTWAVE REVIEW —

Notes From My Diary . . . . 38

THE SERVICE PAGES —

Answers . . . . 42

1947 11

CONTENTS

CONSTRUCTIONAL —

"Sally" . . . . 5

TECHNICAL —

A Record on Six Metres . . . . 9

Signal Tracer . . . . 11

High-Fidelity Transformers . . . . 17

Highlights of Radiolympia . . . . 19

A New Method of Tuning . . . . 23

"Transmitter, FS6 Plus" . . . . 29

Among Our Readers . . . . 33

Calling CQ . . . . 41

SHORTWAVE REVIEW —

Notes From My Diary . . . . 46

THE SERVICE PAGES —

Answers . . . . 50

1947 12

CONTENTS

TECHNICAL —

Electronics in Meteorology . . . . 5

Experiment in De-centralisation . . . . 7

Better Interstate Reception . . . . 9

Theatre Sound Equipment . . . . 13

Latest American Technique . . . . 15

Among Our Readers . . . . 17

Walkie-Talkie . . . . 18

Amateur Personalities . . . . 21

Antenna Tips for the New Hand . . . . 23

Networks — and "Rag-Chew" Clubs . . . . 26

Calling CQ! . . . . 31

SHORTWAVE REVIEW —

Notes From My Diary . . . . 38

THE SERVICE PAGES —

Speedy Query Service . . . . 42

1948

1948 01

CONTENTS

TECHNICAL —

Splendid Contest . . . . 5

The Champion Amplifier . . . . 7

Amateur Personalities . . . . 14

Convert to High Fidelity . . . . 18

"Mantelette Three" . . . . 20

Operation Annie . . . . 22

Recent Valve Developments . . . . 29

Among Our Readers . . . . 31

Performance with Economy . . . . 35

Ham Notes . . . . 39

SHORTWAVE REVIEW —

Notes From My Diary . . . . 46

THE SERVICE PAGES —

Speedy Query Service . . . . 50

1948 02

CONTENTS

TECHNICAL —

Stir in Hi-Fi Circles . . . . 5

Walkie-Talkie . . . . 9

High Fidelity From Crystal Pickups . . . . 15

Hints and Tips . . . . 18

Home-Wound Power Transformers . . . . 19

Converters for "Six" and "Ten" . . . . 24

Wanted — An Inventor . . . . 27

The "Teleconda" Powerport . . . . 31

Ham Notes . . . . 35

SHORTWAVE REVIEW —

Notes From My Diary . . . . 38

THE SERVICE PAGES —

Speedy Query Service . . . . 42

1948 03

CONTENTS

TECHNICAL —

In Search of Fidelity . . . . 5

A Modern Battery Receiver . . . . 9

Radio World Review . . . . 11

Among Our Readers . . . . 15

A Personal Portable . . . . 19

3-Valve Triple-Wave Receiver . . . . 27

Calling CQ . . . . 34

SHORTWAVE REVIEW —

Notes From My Diary . . . . 38

THE SERVICE PAGES —

Speedy Query Service . . . . 42

1948 04

CONTENTS

TECHNICAL —

ZAAYER Crosses Atlantic on "Six" . . . . 5

The L.s.d. of High Fidelity . . . . 7

Amateur Personalities . . . . 13

Narrow-Band F.M. Adaptor . . . . 15

A Direct Coupled Circuit . . . . 17

T.R.F. Mantel Four . . . . 18

Speaker Impedance Matching . . . . 20

Permags Here to Stay . . . . 28

Circuit for an F.M. Receiver . . . . 29

Among Our Readers . . . . 31

Calling C.Q. . . . . 35

SHORTWAVE REVIEW —

Notes From My Diary . . . . 39

THE SERVICE PAGES —

Speedy Query Service . . . . 42

1948 05

CONTENTS

TECHNICAL —

Limelight on Quality . . . . 5

A Home-made Hi-Fi Pick-up . . . . 9

Sad Lack of Technical Development . . . . 13

Protective Circuits . . . . 16

Deaf Aids From Health Clinics . . . . 19

An English Three-Element Beam . . . . 21

Germanium Crystals . . . . 23

Well-tested Battery Receiver . . . . 25

Among Our Readers . . . . 28

Effective Static Reduction . . . . 29

The "VK2NO" Ribbon Beam . . . . 32

Calling CQ . . . . 35

SHORTWAVE REVIEW —

Notes From My Diary . . . . 39

THE SERVICE PAGES —

Speedy Query Service . . . . 42

1948 06

CONTENTS

TECHNICAL —

Fidelity Tuner With A.V.C. . . . . 5

Interesting Pre-Amplifier . . . . 8

Well-Tested Inter-Com. System . . . . 11

Oscillator for Code Speed . . . . 13

Communications Coil Assembly . . . . 17

The "Economy Three" . . . . 19

Service By Substitution . . . . 24

SHORTWAVE REVIEW —

Calling CQ . . . . 35

Notes From My Diary . . . . 39

THE SERVICE PAGES —

Speedy Query Service . . . . 42

1948 07

CONTENTS

TECHNICAL —

Building Box Baffles . . . . 5

Using H.F. Pentodes . . . . 9

Pre-Amplifier Tone Control . . . . 11

12-Valve Communications Receiver . . . . 13

Signal-Strength Meters . . . . 17

Among Our Readers . . . . 21

A Four-Valve Battery Portable . . . . 23

Calling CQ . . . . 27

Amateur Transmitting Licences . . . . 29

SHORTWAVE REVIEW —

Notes From My Diary . . . . 31

THE SERVICE PAGES —

Speedy Query Service . . . . 34

1948 08

CONTENTS

TECHNICAL —

Converter For Amateur Bands . . . . 5

History of "1933 Standard" . . . . 9

"The Bedside 5" . . . . 13

Loudspeaker Baffling . . . . 17

The American Radio Industry . . . . 19

Exceptional 20 Watt Amplifier . . . . 21

"Long Shot" Economy Beam . . . . 23

Calling CQ! . . . . 27

SHORTWAVE REVIEW —

Notes From My Diary . . . . 31

THE SERVICE PAGES —

Speedy Query Service . . . . 34

1948 09

CONTENTS

F.M. — Minus Boloney . . . . 5

Starting Off In Radio . . . . 9

New Broadcast Wavelengths . . . . 15

Buyers' Guide . . . . 25

Students' One-Valve Experimental Set . . . . 39

Calling CQ . . . . 47

How To Become a "Ham" . . . . 49

The Morse Code . . . . 50

International Amateur Prefixes . . . . 52

The "Q" Code . . . . 53

Index to Volume 12 . . . . 54

Short-Wave Review . . . . 55

Bargain Corner . . . . 58

1948 10

CONTENTS

Teleconda 4841 . . . . 5

The Vibrator . . . . 13

Extension Speaker . . . . 23

Multi Channel Tracer . . . . 27

Problems With Battery Sets . . . . 29

Among Our Readers . . . . 31

Frequency Range . . . . 33

Calling C.Q. . . . . 43

A Converter For 50 Mc. . . . . 45

Shortwave Review . . . . 47

Speedy Query Service . . . . 50

1948 11

CONTENTS

De-Luxe Amateur Receiver . . . . 5

Equipment Valves For 1949 . . . . 9

The Man Before Marconi . . . . 11

Junior Feedback Amplifier . . . . 15

Home-Made Hi-Fi Pick-Ups . . . . 17

A Personal Radio Set . . . . 19

The "Q-Plus" Coils . . . . 22

Resistor Faults . . . . 25

R.C.S. Coils Submerged . . . . 29

Tuning Range For Receivers . . . . 30

Among Our Readers . . . . 31

Calling C.Q. . . . . 35

Shortwave Review . . . . 39

Speedy Query Service . . . . 42

1948 12

CONTENTS

Car-Lectric . . . . 5

Dials and Cabinets . . . . 15

Infinite Impedance Detector . . . . 20

Communications Receivers . . . . 21

Home Recording Hints . . . . 25

Progress In British Radio . . . . 27

Mullard Receivers . . . . 29

Notes From My Diary . . . . 31

Speedy Query Service . . . . 34

1949

1949 01

CONTENTS

An Electronic Alarm . . . . 5

Handy P.A. Amplifier . . . . 7

World Standard . . . . 13

A Challenge . . . . 16

Differential Condensers . . . . 17

"New Look" Selectivity . . . . 21

10/15 Converter . . . . 25

Standard Power Unit . . . . 29

Photo-Flash Experiments . . . . 31

New Set Designs . . . . 35

Speedy Query Service . . . . 42

1949 02

CONTENTS

Radio in the News . . . . 5

New Type of Fidelity Pick-up . . . . 6

More About the Standard . . . . 7

New Rola Speaker . . . . 10

Simple Galvanometers . . . . 11

Among Our Readers . . . . 14

Direct-Coupled 807 . . . . 15

Service Oscillator . . . . 17

English Coil Box . . . . 19

British Television Exports . . . . 20

New Brand of Transformers . . . . 21

Medium-Fi . . . . 23

Key to the VT Valve Types . . . . 26

Shortwave Review . . . . 31

Speedy Query Service . . . . 34

1949 03

CONTENTS

Midway Portable . . . . 5

Improved 807 Amplifier . . . . 9

Car Radio Installation . . . . 11

A.C. Power from Batteries . . . . 13

Answers in Full . . . . 15

Radio Control for Models . . . . 20

Phase Splitting Designs . . . . 21

Reproduction of Speech . . . . 29

Among Our Readers . . . . 41

New Angle on Direct Coupling . . . . 43

Good Gramo. Motor . . . . 45

Shortwave Review . . . . 47

Speedy Query Service . . . . 50

1949 04

CONTENTS

Measuring A.C. Current . . . . 5

New Style Direct Coupling . . . . 7

A Simple Multi-Meter . . . . 9

Are Component Prices Unreasonable? . . . . 13

Time Is Money . . . . 16

Cathode Coupling, Again . . . . 17

How To Read Circuit Schematics . . . . 19

Photo-flash Outfit . . . . 22

A Wide-range Bridge . . . . 23

Among Our Readers . . . . 24

Simple Mantel Model . . . . 26

Introduction to "Ham-gen" . . . . 27

Receiver Aerial Matching . . . . 28

T.R.F. Ham Receiver . . . . 31

Converting That Prop Motor . . . . 37

1949 05

CONTENTS

Heterodyne Frequency Meter . . . . 5

Third Dimensional Amplifier . . . . 9

Multi-Vibrator . . . . 11

The Car-Lectric — Mk. III . . . . 13

How to Read Circuits . . . . 19

Magnets and Magnetism . . . . 23

Factory-Made Set Design . . . . 29

Voltage Regulation . . . . 31

Sell Speakers . . . . 37

New Brand of Coil Units . . . . 38

Short Wave Review . . . . 39

Speedy Query Service . . . . 50

1949 06

CONTENTS

An Electronic Stroboscope . . . . 5

Television in Europe . . . . 7

The "Vega" Dual-Wave Five . . . . 9

Latest English Developments . . . . 13

More About Direct Couplers . . . . 15

Efficient Chassis Layout . . . . 17

The Up and Down Receiver . . . . 25

Index to Volume 13 . . . . 26

Analysis of Receiver Noise . . . . 27

Voltage Regulation . . . . 29

Search for Elusive Hi-Fi . . . . 33

List of Instruction Manuals . . . . 37

Odd Resistor Values . . . . 38

Short Wave Review . . . . 39

Speedy Query Service . . . . 42

1949 07-08

CONTENTS

British Television Equipment . . . . 5

Signal Tracer with Oomph! . . . . 9

Latest Radiolette Model . . . . 13

Grid-Dip Wavemeter . . . . 17

Small Sets for Short-waves . . . . 19

Fluo Tube Light Unit . . . . 22

Post-war Organs . . . . 23

Direct Currents . . . . 27

Free Technical Data Offers . . . . 32

A Simple Meg-Meter . . . . 33

How to Wind Honeycombs . . . . 35

Short-wave Review . . . . 37

New International Call Signs . . . . 41

Speedy Query Service . . . . 42

1949 09

CONTENTS

Universal Speaker Input Unit . . . . 5

Effective Valve Checker . . . . 9

Versatile Amplifier Design . . . . 11

Electronic Voltmeter . . . . 15

Pre-Amps for Talkie Work . . . . 19

Alternating Currents . . . . 21

Research Workers Needed . . . . 27

Moisture Control for Textiles . . . . 30

Revolution in America . . . . 31

Distortion — Does it Matter? . . . . 34

Electronic Music . . . . 37

World of Radio . . . . 38

Short Wave Review . . . . 39

Speedy Query Service . . . . 42

1949 10

CONTENTS

A Quality Amplifier . . . . 5

Practical "Q" Meter . . . . 11

Dodging the Transformer . . . . 15

Improved Noise Limiter . . . . 17

Alternating Current in Practice . . . . 19

Effective One-Valve Sets . . . . 27

Tuning Unit for Powerful Receiver . . . . 29

Short Wave Review . . . . 31

Bargain Corner . . . . 34

1949 11

CONTENTS

Universal Output Meter Unit . . . . 5

Customer’s Choice No. 1 . . . . 9

"Ideal" P.U. Characteristics . . . . 11

Amateur Radio Activity . . . . 12

Interest In Gramo Reproduction . . . . 13

Applications of A.C. Practice . . . . 15

75-Watt Modulator . . . . 21

Trade Co-operation Essential . . . . 25

Frequency Records Available . . . . 27

Interesting Circuit Book . . . . 28

Shortwave Review . . . . 29

Shortwave Stations of U.S.A. . . . . 31

Speedy Query Service . . . . 34

1949 12

CONTENTS

"Super-Six" Amplifier . . . . 5

Sets of Yesterday and To-day . . . . 11

Make Your Own Records . . . . 15

Double-Coupled Versatile . . . . 21

The Astor Models G.R. & G.R.P. . . . . 22

Our Technical Directory . . . . 26

The "Clapp" Oscillator . . . . 28

How to Get Started . . . . 30

Commercials on the Ham Bands . . . . 32

Official Goodman's Baffle . . . . 36

Radio Theory (Transmission and Reception) . . . . 37

Shortwave Review . . . . 45

Distortion Percentages . . . . 48

Speedy Queries . . . . 50

1950s

1950

1950 04

No issue published

1950 05

No issue published