7dx log
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Some highlights from the log of Trevor Watkins, 7AA 1923/24
using one valve det, Jap Annaka 90V on plate 60' L aerial
February, 1923
4th VHS de 7AA sigs qsa laying at Hobart wharf
I was using 80 volts & "R" valve Hartley circuit
5th Letter from Mr R.Hull [3JU] 38 Charnwood Rd St Kilda Vic
proposing an attempt at communication between our Experimental
Stations, to be the first to bridge the Gap
20th Got 3JU for first time on 420M, too late copi
21st Formed Radio Institute, Hobart, gd attendance
March, 1923
5th 7aa de 3by - If u get this - would u mind reporting to me -
H Holst 27 Bambra Road Caulfield Melb
6th 7aa de 3by Many thanks for your report - It was exceeding
good reception at your end - Mr Hull is arranging more tests for us
12th Received letter fm 3JU proposing and arranging tests,
betwen Victoria and my station 7aa
14th First tests, first night, but had to attend Radio Club
meeting (important)
15th 7aa de forz, ford, more, high, jump, stan, goat, long
(sent telegram 11.15pm)
April, 1923
17th 400 - 450M VHD de 3MC - VIM sending concert on 750 metres
tonight Received VIM concert "Gdo" [good-oh?]
26th Bell [NZ] de 3mc . . . 3JU has been using Marconi receiving
valve for transmission six watts . . . on 375 metres . . .
(I did not know Bell's wavelength)
19th 7aa de 7ah . . . you were missed at the Club this
afternoon . . . Members consisting of Scanlon, Gillon, Horton and
about six others erected one end of Aerial and pulled 2199 nails
out of wall . . .
June?
29th Got Bell and 3aa first time I listened for them 250 - 280M
[Bell and 3aa in New Zealand]
July, 1923
3rd 200M called Bell qtc - did not get a reply
15th . . . if anyone gets this at a distance would be glad of
report. Address R.J.Orbell 154 Heaton St Christchurch
August, 1923
2nd . . . Amateurs if you receive my sigs pse reply . . .
10th I got a letter today from Waitaggi. I like a good letter
three full pages
13th Received a leter from Harry Lewis who ses Mr Hull picked up
my sigs just before I closed down on 5th August, 1923. I was using
Marconi "R" valve and a plate potential of 81 volts Colpitts
circuit
13th I called up 3ju and asked him if he got my cw . . . as I
let down filament I heard a voice say Hello 7aa this is ??? I
thought he said 3dp so then I asked 3dp to K on cw back he came
sed 7aa de 2zg nw K. I said only using 81 volts HT here, Caesars
ghost are you sure getting me K in 5 mins pse K
7aa de 2zg . . . local conditions being bad etc am posting you a
letter
(he must of got me OK because every time I changed over he said OK
...-. [understood]
20th Working on AC about 250V on plate [what freq?]
7aa de 3ju no good
22nd The stations in Australia with the exception of 3ju 2ds &
NZ seem to me to be too fond of the fones not the cw or tonic
[tonic train cw was interrupted cw to give a modulated note which
could be copied on a crystal receiver]
October, 1923. Trans Pacific Tests
2nd Joe and myself listened in on the 2 stage RF (R valves)
1 Rect (V24) [detector] for first test. 40V HT 12 on V24
[29 American stations were copied during tests]
December, 1923 using Hartley UV202 350V 100'
aerial 3 wires no cpse [counterpoise]
7aa de 3bd ur sigs qsa
7aa de 3bd tks om ur sigs clear but weak . . .
[from now on regular mainland contacts appear in the log]
January, 1924 14th got receiver going on short wave
23rd 7aa de 3bd . . . Broadcasting starts here on Sat nite on
480 metres
February, 1924
5th 7bc de 8cd flying for one hour at Hobart
(8cd 1300M spark "Fairy" seaplane) [Regatta Day?]
March, 1924
1st 3ju de 7aa msg nr 1 -
President Tasmanian Division Col Olden sends heartiest greetings
and brotherly best wishes to all Australian divisions who believe
in unselfishness and good feeling towards each other Sig Col
Olden
19th 7aa de 7om . . . using rec for transmitting as transmitter
out of action for time . . .
April, 1924
8th 7.30pm Council Meeting of 1st Annual Meeting of W.I.A Tas-
Div. Very lively!! [blood spilt incident?]
8.30 General Meeting re above -
9th 3uz calling - We have been requested by the Radio
Development Association to request to all people who at present are
holding Experimental Licences to continue to pay their fee of 10/-
and to stop paying any additional fee to any Broadcasting Concern,
with the exception of Commercial Broadcasting Stations.
15th 7aa using 1 HF 1 det 1 LF HT 36 - 4 1/2 - 36 volts
29th cq de 3uz (ICW) - 7aa de 3uz ge om . . .
May, 1924
1st 7bn (ICW) . . . 7bh aa 7bn Music now . . .
15th VIM de VIH Memo to 7np not received 7np closed on tenth
until further notice hw. K
18th (2bl) Hello Mr Monks, Doubikin, Watt, Roy Simons We will
put on a special program on Wednesday next commencing at 9pm for
your special benefit
June, 1924
16th 7aa de 7om . . . Gee! Typewriter Some shack nw eh!! what!!
Sa! dont the sound of the "Mill" interfere with cd? . . .
29th picked up KGO
July, 1924 (Away Camp)
[QSL card dated 15/8/24 mentions his being sent to country with
breakdown]
[He died of TB in 1931 ]