Wie weet wat dit is? (Techniek Radio/TV)

door S.Leunissen , regio Zuid Limburg, 02.02.2012, 19:18 (4679 dagen geleden) @ Piet

Hi folks,

I' am asking this on behalf of a dutch valve radio site member.
It's about a transmitter type TR 87. I guess it's british RAF maybe Admiralty
MOD- equipment. All technical information is welcomed. To what part it belonged, frequencies, power supply etc how to operate etc.....

http://www.nfor.nl/archief/index.php?id=112481

See pics and cirquit.

best regards and thanks for taking the time.

Sander
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Interesting!

It's RAF, not Admiralty, from the 10R/85 stores code on the unit.

Battery powered from 90V HT and 1.5 V LT.

Crystal controlled AM transmitter on 10.0583 MHz (or a harmonic of that).

Obviously built in vast quantities, with a serial number in the 28,000s so
probably some kind of expendable beacon.

Looks too heavy to be balloon carried, so possibly sonobuoy?

Chris
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groet Sander