History of wireless telegraphy and broadcasting in Australia/Topical/Publications/Australasian Radio World/Issues/1937 08
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The Australasian Radio World
AUGUST 2, 1937; Vol. 2 - No. 4; Price, 1/-
Registered at the G.P.O., Sydney, for transmission by post as a periodical
Cover Photo: Photo of No. 1 W/T R/T radio station of Cavalry Division Signals, Australian Corps of Signals (See Page 8)
Highlighted Contents: "Sky-King Dual-Wave Five": "Jones' Super-Gainer Two": 7-Watt Low-Cost High-Fidelity Amplifier: Multi-Band Crystal-Controlled Transmitter: Latest Shortwave News
Inside Front Cover - Ever Ready Co. Ad
P.01 - F. J. W. Fear & Co. Ad
P.02 - Editorial Notes
Editorial Notes . . .
The unexpected death of Marchese Marconi on July 20 last came as a tragic surprise to the whole world. As the man who pioneered radio as we know it to-day, Marconi has done incalculable good for humanity, and the gigantic network of broadcasting stations and radio communications systems that covers the globe to-day will form an everlasting monument to his memory. A brilliant thinker, Marconi was at the same time far more than a man of exceptional scholastic attainments. A visionary, he had as well the ability to apply his ideas in practical form, and in this combination of the theoretical and practical lay his genius. One of Marconi's early associates and lifelong friend was Sir Ernest Fisk, chairman of directors of Amalgamated Wireless (A/sia) Ltd., who, speaking from London by radio telephone the day following Marconi's death, paid the following tribute to the great inventor's memory:- "By the death of Marconi the world has lost one of the most illustrious figures and one of the greatest benefactors of our generation. I have also lost a beloved friend and leader of many years' standing. "It is astonishing to contemplate the enormous range of human activity in which Marconi's work has become applied during his lifetime, and perhaps even more remarkable to consider the fruits yet to be gathered from the great science and industry pioneered by Marconi. He was a great scientific visionary, who always saw ahead the possibilities and the means for developing beneficially the use of electro-magnetic waves in the ether. First to protect human life and property at sea and to overcome the isolation previously associated with seafaring life, he then attempted, in the face of scientific opposition, to span the oceans, and succeeded magnificently, and later he caused his waves of intelligence and goodwill to cover the great distance between the Old Country and Australia and then to encircle the world. "He discovered the principles which enable thousands of wireless stations to work simultaneously without mutual interference, and then proceeded to develop that most efficient system known as the Wireless Beam, by which we can send electromagnetic waves in any direction we choose. "In more recent years Marconi applied his research in the field of those ultra short waves which will eventually make television practicable, and in the new field of microwaves, the enormous possibilities of which will be demonstrated in years to come. "He was a modest gentleman who always recognised that as his work developed it required and utilised the co-operation of innumerable other inventors and scientists who were attracted by the beacon light which he carried forward. "Although born an Italian, and remaining constantly loyal to his native country, Marconi became essentially an international figure and world possession. His great achievements were recognized by Governments and scientific bodies and endorsed by many decorations granted to him in the principal countries of the world. "The British people will always recognize the debt of gratitude to Marconi for his great work, which has enabled all parts of our widespread Empire to be linked with means for instantaneous communication. They are proud of the fact that Marconi's mother was British, and that most of his early experimental work was carried out in Great Britain by the British Company which he established. Direct communication between Australia and Great Britain is an outstanding result of Marconi's work -as also is the linking by wireless of half a million telephone subscribers in Australia with more than thirty million telephone subscribers of the outside world. Our broadcasting stations, which convey information and entertainment to every home in the country - no matter how near or remote - constitute a further tribute to this great man. In the Navy, in the Mercantile Marine, in the Commercial and Defence Air Services, in the vast interchange of commodities known as international trade, and in the transmission to hundreds of millions of people of news and information through broadcasting, and in the new field of the use of wireless waves for healing purposes, in the saving of life, and in spreading understanding among the peoples of the world, Marconi lived to see the fruits of his great faith and imagination, his wide knowledge, and his untiring work. "The newspapers of Great Britain to-day are unanimous in paying tribute to the most outstanding man of our time. "As President of the Institution of Radio Engineers of Australia, and on behalf of its Council, I had invited Marconi to attend our World Radio Convention in Australia next year, and he had enthusiastically accepted. Only a few days ago I received a telegram from him inviting me to go to Rome to discuss this and other matters of mutual interest."
P.02 - Contents Banner
The Australasian Radio World
All-Wave All-World DX News
Managing Editor - A. Earl Read, B.Sc.
Vol. 2. - AUGUST, 1937 - No. 4.
P.02 - 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
P.02 - Publication Notes
The "Australasian Radio World" is published monthly by Trade Publications Proprietary, Ltd. Editorial offices, 214 George Street, Sydney, N.S.W. Telephone BW6577. Cable address: "Repress," Sydney. Advertisers please note that copy should reach office of publication by 14th of month preceding that specified for insertion.
Subscription rates: 1/- per copy, 10/6 per year (12 issues) post free to Australia and New Zealand. Subscribers in New Zealand can remit by Postal Note or Money Order.
Printed by Bridge Printery Pty. Ltd., 214 George Street, Sydney, N.S.W., for the proprietors of the "Australasian Radio World," 214 George St., Sydney (Footnote P.48)
P.03 - "Sky-King Dual-Wave Five"
P.05 - Ham Jargon
P.06 - "Air-Cell Pentagrid Seven"
P.08 - "Fluttering On The Short Waves"
P.10 - Radio Ramblings
P.15 - Trans-Tasman Reception With "Companionette"
P.16 - YL Radio Enthusiast Builds 15-Valve S.S. Super
P.18 - High Fidelity Amplifier Uses Push-Pull 2A3's
P.20 - Over 30,000 Miles Covered In Round Table Hook-Up
P.22 - The "Jones' Super-Gainer Two"
P.26 - Breaking Into The Amateur Game
P.29 - Home-Built Talkie Plant Gives Excellent Performance
P.30 - Multi-Band Transmitter Uses Unique Assembly
P.32 - The A.T.R.S. Bulletin
P.32 - Tracking Down Distortion
P.34 - What's New In Radio
P.36 - New 5-Metre Records
P.37 - 25 Years In Amateur Radio (4)
P.39 - All-Wave All-World DX News
P.40 - Shortwave Review
P.42 - DX Contests Arouse Widespread Interest
P.43 - DX News And Views
P.44 - Round The Shacks (1)
P.45 - Round The N.Z. "B" Stations (4)
Round the N.Z. "B" Stations . . . . 4
4ZM . . . . "Voice Of Dunedin"
The fourth of a series of articles on N.Z. "B" class stations, written by "The SOUTHLANDER" ("The Southlander" was Merv Branks, then of Winton, later Invercargill) STATION 4ZM, in Dunedin, New Zealand, is one of the most modern of the medium-power "B" stations now operating in New Zealand. Associated with the station ever since its owners, Messrs. McCracken and Walls, entered the field of broadcasting, Mr. John Walls, manager and chief announcer, has introduced many popular innovations to broadcasting in this southern city of New Zealand. First Heard In 1927. it was in September, 1927, that the Post and Telegraph Department allotted the call-sign 4ZM to Mr. J. D. McKewen at 418, Anderson's Bay Road, Dunedin, and about one month after this date the station, with Mr. J. Stone as operator, commenced activities. In September, 1929, the owner, for business reasons, transferred the station to the premises of Messrs. Chas. Begg & Co., of Prince's Street, Dunedin. Here its broadcasts attracted an ever-increasing number of listeners, perhaps the most appreciated session being the programme of popular recordings broadcast each Sunday evening. Present Owners Took Over In 1932. 4ZM continued a regular schedule of transmissions from the same location until September, 1932, when Messrs. McCracken & Walls acquired from the original owner the whole of the plant and accessories. A new chapter in the life of Radio 4ZM, Dunedin, had begun. The transmitter at 4ZM remained in its original condition for some time, but coincident with the appointment of Mr. J. P. Pickerill as station engineer, it was decided to dismantle the old plant entirely and build a new transmitter of as modern a design as possible. A small stand-by transmitter was placed in commission to carry on while the main constructional work was being completed, and in due course the new 4ZM commenced broadcasting. To-day a new high fidelity transmitter is being heard from 4ZM, the entire equipment having been designed and built by the staff. Details Of The Transmitter. The transmitter is a M.O.P.A. type, push-pull stages throughout, the antenna power being 100 watts (100% modulation). Owing to the push-pull construction, the transmitter is exceedingly stable, and has a daylight range of 150 miles, expanding to 500 miles at night. Service Of The Helping Hand The Radio Church Service of the Helping Hand was inaugurated in April, 1934, by the Rev. L. B. Neale, known to listeners as Uncle Leslie, and this fine session is probably the most popular church service broadcast in the South Island. The membership of this organisation is over 4,000, and Uncle Leslie conducts these services daily, between 10.30 and 11 a.m. To listeners in all walks of life Uncle Leslie's addresses are most helpful, inspiring and comforting, and his voice over the microphone is eagerly awaited by his Radio Church audience every morning: "I take no thought of my neighbour's birth Or the way he makes his prayer, I grant him a white man's place on earth If his game is on the square. So here's my mite for truth and right And the 'Church of the Helping Hand'." He is the right man in the right place, and his broadcasts are acclaimed on all sides. Each member has a small box, and all that is asked is one penny per week. The contents of the boxes are collected quarterly, and go entirely towards the relief of distress in the city.
(Start Photo Caption) Left: The main studio at Station 4ZM, Dunedin. (End Photo Caption)
(Start Photo Caption) Right: Mr. J. P. Pickerill, station engineer, who designed the transmitter now being used. (End Photo Caption)
(Start Photo Caption) Dxers forwarding correct reports on reception of 4ZM will receive this verification card in exchange. (End Photo Caption)
Facts About 4ZM
Facts About 4ZM
Call and Location: 4ZM Dunedin. 17, George Street; Dunedin, N.Z.
Owners: Messrs. McCracken and Walls.
Frequency: 1010 k.c.
Power: 100 watts.
Transmission Times (N.Z.S.T.): Sun., 2 p.m. to 10 p.m.; Mon., 9 a.m. to 11.45 a.m., 1 p.m. to 2 p.m.; Tues., 9 a.m. to 11.45 a.m., 1 p.m. to 2 p.m., 6 p.m. to 11 p.m.; Wed., 9 a.m. to 11.45 a.m., 1 p.m. to 2 p.m.; Thurs., 9 a.m. to 11.45 a.m., 1 p.m. to 2 p.m.; Fri., 9 a.m. to 11.45 a.m., 1 p.m. to 2 p.m.; Sat., 9 a.m. to 12.0, 5 p.m. to 10 p.m.
Longest Distance Verified Report: Mr. A. McGregor, Brogo, New South Wales, Australia.
Manager and Chief Announcer: Mr. J. W. Walls.