Telstra
Research Laboratories
1930's Electronic Laboratory - Video
(1973)
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About the video
TRL
Cast
View the video
(trl-openday-1973.mpg ~33 Mb 00:03 Mins)
Silent footage created by the TRL Instrumentation Section for the 1973 TRL Open Days. It replicated the people, contents and workings of a typical electronic laboratory of the 1930's complete with authentic instrumentation. Converted from old 8mm film so the quality is poor.
00:23 John Zigmantas adjusts
c. 1930 rotating mirror oscilloscope and refers to waveforms
(photographs) taken using the device. Then compares them with the
results on the mirrors.
01:09 Peter Dalliston shown
wiring a thyratron oscillator on an open breadboard. (Battery
operated).
01:42 John Zigmantas receives
a call on an Edison candlestick style telephone circa 1935.
02:02
Peter Dalliston connects up a
valve trf receiver to batteries, then tunes each stage to a
station.
02:17 Peter and John discuss
the merits of the new cathode ray tube. Then we see one in use, which
is still using a rotating mirror as the timebase.
02:33 A
sweep of the recreated electronics laboratory.
Information provided by Peter Dalliston
Last updated: 17 May, 2002