History of wireless telegraphy and broadcasting in Australia/Topical/Stations/4LW Brisbane/Notes

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Contents


4LW Brisbane - Transcriptions and notes[edit]

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ITEMS ABOUT AMATEURS. Mr. W. Sayce, of Paddington Heights, reports having heard the following stations:— Queensland: 4AN, 4CN, 4EG (Toowoomba). New South Wales: 2FC, 2BL, 2GR, 2EM, 2CM. Victoria: 3AR. This is the Victorian broadcasting station, which, Mr. Sayce remarks, is giving some very good programmes.[1]

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RADIO NOTES. . . . (By "DX Hound"). . . . NEW LICENCES. 4CN, C. R. N. Morris, Elizabeth-street, Rosalie, Brisbane. 5NC, Norwood Radio Club, 60 Osmond Terrace, Norwood, South Australia. 2WP, W. T. Potter, Fletcher-street, Helensburgh, New South Wales. 2RL, A. R. Litchfield, Springwell, Cooma, New South Wales. 2HO, H. Hart, 112 Fairlight Crescent, Manly, New South Wales.[2]

1928 09[edit]
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Radioqueries. Answered by "Proton. . . . "DETECTOR VALVE OVER-LOADING." "Squeak" (Torwood) has a three-valve set which is extremely sensitive yet gives unsatisfactory reception on local stations, such as 4RM, 4CN, and 4QG, when these stations are tuned to their true wave lengths. As the audio stages work perfectly with a pickup, he asks us to suggest the trouble. Answer:— I think we may take the trouble to lie in the detector valve, and my opinion is that it lies with the grid leak. The lower the value of the grid leak the less sensitive and more selective a set becomes, but more important still the quality is also greatly improved. Now your leak has probably become defective, and the true megohmage is much greater than that rated. This means that your detector valve is too sensitive for strong signals, and is overloading. The remedy is a new leak for local work, and I suggest a one megohm metallised type. [3]

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1929[edit]

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THE DX3 PRAISED. J. T. (Greenslopes) writes: Being an enthusiastic constructor of valve receiving sets, permit me, after trying several well-known circuits, to state a few facts regarding the DX3. I operated a four-valve tuned plate receiver before Brisbane had a broadcasting station. This, with a specially constructed wave trap of my own design, gave very good results, but in my mind, using only two valves with a DX3 receiver, equally good if not better results than three valves of the tuned plate are obtained. I have already shown you a list of 16 stations received in as many minutes on two valves of the DX3, 10 of which were clearly heard on the speaker. With the three valves, using a Philips' B battery eliminator and a good filter output, great volume and clarity is obtained from all "A" class stations excepting 6WF, and good volume and clarity from the B class stations and local amateur experimental transmitting stations. I am only two and a half miles air line from 4QG, with quite a large number of valve receivers oscillating round me each night, and having spent many months on recent circuits consider the DX3, accurately constructed of good material, to be "on its own" as an efficient and simple three-valve receiver. From the number of requests for this circuit no doubt other amateurs are equally as keen as I to obtain a good instrument at moderate cost and upkeep, and I can assure them, should they construct the DX3 it will convince them. The list mentioned comprised: 2FC, 2BL, 2UE, 2UW, 2KY, 3UZ, 3LO, 3AR, 5CL, 5DN, 7ZL, 1YA, 2YA, 3YA (New Zealand), 4QG, 4CN, 4NW, and a number of others, including JOAK and JOCK (Japan), all on speaker with only two of the three valves used.[4]

1929 05[edit]

OUR WIRELESS CIRCLE. Radioqueries. (Answered by "Proton.") . . . THE BON IDEAL. "Bon Ideal" (Nundah) has built the Bon Ideal Receiver with great success, but he cannot receive the amateur stations, and asks why and what crystal set will. Answer:— The peculiar coil design restricts the tuning range so that your set will not tune to low wave lengths, such as 250 metres, used by amateur stations. Your results are very good, indeed. The inter-State crystal receiver will tune in 4NW, 4RM, and 4CN as you desire.[5]

1929 06[edit]
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NOTABLE RESULTS OBTAINED FROM DX4. Mr. Les. Court, Union-street, Toowong, writes:— I feel I must write and let you know how the DX Four has been working. It is absolutely the best four-valve set that I have had anything to do with, the stations absolutely falling in. The marked characteristics of the set are: (1) Enormous daylight range on loud speaker. (2) Total absence of hand capacity. (3) Marked selectivity, with tremendous volume and tone. (4) Loudspeaker reception on amateurs. Below are some of the stations received on this set regularly:— Queensland: 4WN, 4NW, 4TC, 4RO, 4GR, 4JB, 4CN, 4JU, 4RM, 4QG, 4BH, 4MF. New South Wales: 2FC, 2BL, 2UE, 2UW, 2KY, 2GB. Victoria: 3LO, 3AR, 3BY, 3EF, 3AD, 3AM, 3BM, 3DB, 3UZ. South Australia: 5CL, 5DN, 5KA. Tasmania: 7L. , New Zealand: 1YA, 2YA, 3YA, 4YA (all except 4YA on speaker). Japan: JOAK, JOCK, JOBK (loud speaker). Manila: KZRM. South Africa: JB. I have received cards from nearly all these stations, so as to verify my reception. From 3 p.m. onwards I can receive loud speaker reception on 2FC and 2BL, 3LO and 3AR. I will conclude by saying that the results obtained from the DX Four will equal any six valve set, especially for anyone who desires a modern set giving good results. My heartiest congratulations, and I hope your future experiments will be an even greater success than the DX Four.[6]

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INTERSTATE CRYSTAL SET. Reprinted to Meet Popular Demand. (By Proton.) Early in May the Interstate crystal set first appeared in these columns, and copies of The Sunday Mail giving constructional details were soon sold out. Consequently, I have received innumerable calls for circuit diagrams and a reprint of the article. So pressing have these demands become of late, that the Interstate makes its second appearance, this time as a well-known "star." Very many readers have written, telling what wonderful results this little set has given, and although I will believe anything of radio, I cannot help expressing surprise when 5CL is heard on a crystal set by a number of Brisbane residents. Crystal sets come and go, but for many they seem to hold an unquenchable fascination perhaps on account of their unending possibilities. The Interstate crystal set was designed to be even better than its predecessor, the Bon Ideal, which failed to do for some all that it was supposed to do; but remember, neither will the Interstate unless you adhere to the general design, and use it with a good high aerial. A good aerial is the secret of success with a loud speaker crystal set. Some localities are not all they might be, but usually the trouble lies in faulty construction. As a crystal set depends upon the actual energy received from the broadcasting station for its operation, you must have a good aerial or pickup system in order to repeat results detailed. Bad aerial system only gives bad results. The Litz wire is used to enable maximum efficiency to be obtained. This wire consists Of nine strands of 38 gauge wire each insulated from one another by a silk covering, and held together by a double silk sheath. The wire has a very low high-frequency resistance, hence it is most valuable when dealing with minute currents, as in the case of crystal sets. Balance is the keynote of efficiency in electrical circuits, and, as radio is but a branch of the major science, we can apply the system to our radio circuits with greatly improved results. Consequently, I have introduced a tapping device in this receiver to permit each operator to balance up his or her particular conditions. As an illustration of the point, I will quote an example: The unit of power is a watt. If we have a generator connected to a circuit the resistance of which is equal to that of the generator windings, we will obtain the maximum output power in watts for any particular generator speed. If the resistance across the generator windings is higher or lower than that of the generator windings, the power output in watts will not be so high as when the two circuits are in a state of balance. Since the original appearance of the Interstate crystal set it has been subjected to all manner of test by readers of these columns. Following is a summary of stations received: 4QG, 4RM, 4NW, and 4CN, on the loud speaker; 4MF and 4CG, on 'phones; inter-State, 2FC, 2BL, 2UE, and 2GB (Sydney), 3LO and 3AR (Melbourne), 5CL (Adelaide). From particulars given, 4QG gives such volume on the speaker that it can be heard anywhere in the room and easily followed, whilst it is usual to be able to understand announcements in the next room — a really remarkable feat for any crystal set. Getting down to business: To build the Interstate similar to the original, you will require the following com ponents:—[7]

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VK4CN NOW CHANGED TO VK4LW. The amateur station VK4CN, which has delighted so many of us during the last 12 months, with excellently modulated transmission of electrically reproduced gramophone records, has been advised from Melbourne that on account of confusion with the call sign of another Morse station, the call sign has been changed to VK4LW. VK4LW certainly provides the best amateur transmission, closely followed by VK4NW, the operators of both stations being particularly keen radio men. Consequently when you hear first-rate music coming over the air under the call letters of VL4LW [sic, VK4LW], do not think you have come across a new 'fourer;' it is only our old friend painted up for Christmas and the New Year, when he intends increasing his power to about 50 watts, so that all crystal friends may enjoy an early transmission on Sundays.[8]

RADIOQUERIES. Answered by "Proton." STATION 4LW RAISED. E.A.H. (Edward-street) writes, further to last Sunday's note concerning the change from 4CN to 4LW, a letter of appreciation of the excellent programmes, and states that the quality of the transmission last Sunday morning was superior to that of any he has heard from any station, broadcasting or amateur. He asks why such excellent transmission should be curtailed during the broadcast hours, when it is superior to A class stations. Answer.— 4LW certainly is at the top of amateur form, and I, like you, enjoyed his last Sunday's transmission very much. I am forwarding your letter to 4LW, and if you have not already written to him in similar strain, he will no doubt acknowledge it. The amateur and experiments are both absolutely in the hands of the wireless section of the Postmaster-General's department, so his instructions must be obeyed. Indeed, it is hard on the amateurs who have done an incredible amount of good for radio generally, but the powers controlling radio have a hard task before them, as the transmitting frequencies are becoming more crowded every day, and they must give commercial companies, who have thousands of pounds at stake, the first preference.[9]

1930s[edit]

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RADIOQUERIES. Answered by "Proton." . . . WHERE ARE THE AMATEURS? P. N. (Hawthorne) has a two-valve set on which he used to tune in the local amateurs, 4LW (late 4CM (sic, 4CN)), 4MW (sic, 4NW), and 4TC, nearly every night, but lately he cannot tune then in and asks what is likely to be wrong with his set, or have the amateurs changed their wavelength? Answer.— Alas! they have changed their wavelength, right down to 40 metres during broadcasting hours. Under instructions from the wireless branch at the P.M.G.'s Department, these stations are not allowed to transmit on the 200-250 metre band during the broadcast hours; so we in Queensland miss the best transmissions we ever had, irrespective of class. However, there is a little consolation in the fact that some of the old favourites, such as 4LW, may be heard on Sunday morning before 4QG is on the air. Most probably there it nothing wrong with your set. You have been trying to receive stations not on the air. [10]

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THE OLD TIMERS' TWO. Embodying the P.I. Circuit. (By "Proton.") During the last few months readers have made a steady yet constant demand for details of our old friend, the P.I, which was the popular circuit for both commercial and amateur use in the early days of the three-electrode valve. The reason for this demand is undoubtedly due to the symbol by which this circuit is knows, for it is very unsatisfying; it conveys nothing of the nature of the circuit. This, coupled with recent radioquery discussions, has provided the reason for submitting the Old Timers' Two in these columns. . . . The Old Timers' report test log reads:—Local: 4QG, 4LW, 4NW. Sydney: 2KY, 2VE [sic, 2UE], 2UW, 2BG [sic, 2GB], 2BL, and 2FC. Melbourne: 3LO, 3DB, 3UZ, and 3AR. Adelaide: 5CL. Perth: 6WF. Hobart: 7ZL. New Zealand: 2YA, 3YA, and 4YA. Manila: KZRM. Japan: JOCK, JOAK, and JOBK. Evidence of the extreme sensitivity of the P.I,. of course as a two, speaker results were not obtained every night on the more distant stations, but Sydney and Melbourne came in without fail. The gear you will require is as fol lows: — [11]

1930 04[edit]

4LW included in list of Brisbane amateur broadcasters and impact of Brisbane B class foreshadowed

RADIO. Wireless Institute. Telephony Transmissions Members' Schedules. . . . TELEPHONY TRANSMISSIONS. In connection with telephony transmissions, it is interesting to note that the following schedule is adhered to by the leading amateur phone transmitters in Brisbane. VK4NW: Sundays, 9 a.m. to 10 a.m. and 8.15 p.m. to 10 p.m. Week nights, except Wednesday and Saturday, 7 p.m. to 8 p.m. Wave length 248 metres. VK4LW: Sundays, 9 a.m. to 10.30 a.m. and 10 p.m. to 11 p.m. Wave length 224 metres. VK4GO: 6.30 p.m. to 7.15 p.m. nightly. Sundays, 9.30 a.m. to 10.30 a.m. 6 p.m. to 7.30 p.m. Wave length, 227 metres. VK4PG: Sunday, 9 a.m. to 11 a.m. Wave length, 222 metres. VK4WN: Sunday, 9.30 a.m. to 11 a.m. Wave length, 240 metres. VK4JU and VK4BH occasionally transmit on the band between 200 and 250 metres. This schedule will be subject to revision when the new regulations are in force as a result of the establishment of a B class station in this district. Any inquiries, regarding the institute should be addressed to the secretary, Major Leo J. Feenaghty (VK4LJ), Box T1412, G.P.O., Brisbane.[12]

1930 05[edit]

APPRECIATION. J. E. Lynch, Frith-street, South Brisbane, writes:— I have noticed several correspondents asking after a 1-valve amplifier. I built one which was published in the Sunday Mail some months ago, and I have met with great success. Both with the handy crystals and inter-State, I picked up after 4QG closed down, 3AR, 3LO, and 2FC with great strength on earphones, and VK4LW on Sunday mornings at 9.30 o'clock. I also picked up an other station which used Morse code, but being unable to read it did not know call sign. The name of amplifier referred to was "A Neat One-valve Amplifier." I will be pleased if W.S.F. (East Brisbane) would call on me or send his name and address, and I will be only too pleased to either show him or help him to build the amplifier. He may also hear it working. I am using a Spitfire speaker. Also if J.A.N. (International Hotel) sends his name and address the same applies to him in regards to giving him a copy of my amplifier. I have experimented with a few crystal sets, and I find that the popular "Inter-State" out does the lot, both for volume, selectivity and range-finding.[13]

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2009 06[edit]
2009 07[edit]
2009 08[edit]
2009 09[edit]
2009 10[edit]
2009 11[edit]
2009 12[edit]

2010s[edit]

2010[edit]

2010 01[edit]
2010 02[edit]
2010 03[edit]
2010 04[edit]
2010 05[edit]
2010 06[edit]
2010 07[edit]
2010 08[edit]
2010 09[edit]
2010 10[edit]
2010 11[edit]
2010 12[edit]

2011[edit]

2011 01[edit]
2011 02[edit]
2011 03[edit]
2011 04[edit]
2011 05[edit]
2011 06[edit]
2011 07[edit]
2011 08[edit]
2011 09[edit]
2011 10[edit]
2011 11[edit]
2011 12[edit]

2012[edit]

2012 01[edit]
2012 02[edit]
2012 03[edit]
2012 04[edit]
2012 05[edit]
2012 06[edit]
2012 07[edit]
2012 08[edit]
2012 09[edit]
2012 10[edit]
2012 11[edit]
2012 12[edit]

2013[edit]

2013 01[edit]
2013 02[edit]
2013 03[edit]
2013 04[edit]
2013 05[edit]
2013 06[edit]
2013 07[edit]
2013 08[edit]
2013 09[edit]
2013 10[edit]
2013 11[edit]
2013 12[edit]

2014[edit]

2014 01[edit]
2014 02[edit]
2014 03[edit]
2014 04[edit]
2014 05[edit]
2014 06[edit]
2014 07[edit]
2014 08[edit]
2014 09[edit]
2014 10[edit]
2014 11[edit]
2014 12[edit]

2015[edit]

2015 01[edit]
2015 02[edit]
2015 03[edit]
2015 04[edit]
2015 05[edit]
2015 06[edit]
2015 07[edit]
2015 08[edit]
2015 09[edit]
2015 10[edit]
2015 11[edit]
2015 12[edit]

2016[edit]

2016 01[edit]
2016 02[edit]
2016 03[edit]
2016 04[edit]
2016 05[edit]
2016 06[edit]
2016 07[edit]
2016 08[edit]
2016 09[edit]
2016 10[edit]
2016 11[edit]
2016 12[edit]

2017[edit]

2017 01[edit]
2017 02[edit]
2017 03[edit]
2017 04[edit]
2017 05[edit]
2015 06[edit]
2015 07[edit]
2017 08[edit]
2017 09[edit]
2017 10[edit]
2017 11[edit]
2017 12[edit]

2018[edit]

2018 01[edit]
2018 02[edit]
2018 03[edit]
2018 04[edit]
2018 05[edit]
2018 06[edit]
2018 07[edit]
2018 08[edit]
2018 09[edit]
2018 10[edit]
2018 11[edit]
2018 12[edit]

2019[edit]

2019 01[edit]
2019 02[edit]
2019 03[edit]
2019 04[edit]
2019 05[edit]
2019 06[edit]
2019 07[edit]
2019 08[edit]
2019 09[edit]
2019 10[edit]
2019 11[edit]
2019 12[edit]

2020s[edit]

2020[edit]

2020 01[edit]
2020 02[edit]
2020 03[edit]
2020 04[edit]
2020 05[edit]
2020 06[edit]
2020 07[edit]
2020 08[edit]
2020 09[edit]
2020 10[edit]
2020 11[edit]
2020 12[edit]

2021[edit]

2021 01[edit]
2021 02[edit]
2021 03[edit]
2021 04[edit]
2021 05[edit]
2021 06[edit]
2021 07[edit]
2021 08[edit]
2021 09[edit]
2021 10[edit]
2021 11[edit]
2021 12[edit]

2022[edit]

2022 01[edit]
2022 02[edit]
2022 03[edit]
2022 04[edit]
2022 05[edit]
2022 06[edit]
2022 07[edit]
2022 08[edit]
2022 09[edit]
2022 10[edit]
2022 11[edit]
2022 12[edit]

2023[edit]

2023 01[edit]
2023 02[edit]
2023 03[edit]
2023 04[edit]
2023 05[edit]
2023 06[edit]
2023 07[edit]
2023 08[edit]
2023 09[edit]
2023 10[edit]
2023 11[edit]
2023 12[edit]

2024[edit]

2024 01[edit]
2024 02[edit]
2024 03[edit]
2024 04[edit]
2024 05[edit]
2024 06[edit]
2024 07[edit]
2024 08[edit]
2024 09[edit]
2024 10[edit]
2024 11[edit]
2024 12[edit]

2025[edit]

2025 01[edit]
2025 02[edit]
2025 03[edit]
2025 04[edit]
2025 05[edit]
2025 06[edit]
2025 07[edit]
2025 08[edit]
2025 09[edit]
2025 10[edit]
2025 11[edit]
2025 12[edit]

2026[edit]

2026 01[edit]
2026 02[edit]
2026 03[edit]
2026 04[edit]
2026 05[edit]
2026 06[edit]
2026 07[edit]
2026 08[edit]
2026 09[edit]
2026 10[