June 22nd 04, 03:45 PM
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On 22 Jun 2004 06:11:10 -0700, (peter
dingemans) wrote:
G'day everyone,
A while ago I acquired a piece of equipment, a beacon transponder on
5480 MHz (TX). In it is a 'block' that seems to be the oscillator for
TX:
type nr. is 'VMC-1680'
made by Varian/beverly
date code 88236
the sizes of it are 35*55*31 mm; it's magnetic; the output is SMA.
There's a caution on it to keep it at least 4" away from magnets.
3 wires come out of it: red, black and grey. None of them seem to be
HV-rated, so my original guess of a Magnetron or Klystron seem to be
wrong.
I wonder if it's possible to use it for Ham-purposes (it seems
tunable, and the 5,7 GHz hamband is very nearby...)
If it's tunable it can't be a magnetron, anyway, surely? They resonate
at a fixed frequency determined by the mechanical cavities machined
into them.
--
"What is now proved was once only imagin'd." - William Blake, 1793.
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