Quote:
Originally Posted by James D Teel II
What does the wave meter for the 19 set look like? I see some on offer now and again and think I’d like to pick one up.
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The usual one in British service during WW2 was the "Wavemeter, Class D, No.1" which was produced in a variety of case colours. This operates from 6 volts and could use a separate battery (the wooden-cased 6V 16AH accumulator) or be tapped across the wireless set battery using a pair of crocodile clips as necessary.
They were normally only issued to net control stations, as the other sets would be tuned to that signal.
It contains a dual-frequency crystal (1MHz and 100kHz) plus a variable frequency oscillator that allows the operator to set his frequency as required.
The original unit came in a wooden transit case that contained the headset and instruction manual, etc. Spare vibrator, valve, and dial lamps were fitted inside the unit. A later version was made in a 2-part metal case with rubber seal to protect it from damp when not in use.
Judging by the serial numbers, a very large number were made - 570467 has been noted.
Be careful when buying one: common modifications are to remove the vibrator and either build an AC supply into the unit, or run it from a 6.3 volt heater transformer for amateur radio use.
(They sometimes fetch extremely silly prices on various auction sites. I have no idea why.)
Chris.