My recollection is that the Gunnplexer used (no surprise) the same Gunn
oscillator for TX and as the LO. The RX mixer was a regular point-contact
diode. For communications use they operated in pairs with the oscillators
offset by the i-f.
Wes N7WS
On 8/30/2018 12:27 AM, Andre wrote:
Hi, if its of any help I (still) have a box of goodies including some 10 and 22
GHz Gunnplexers. would the diodes be of any use?
The RX (IIRC its a varactor) diode is structurally very similar to an SRD, maybe
possible to adapt it if as I expect the resonance is tuned to near 6 GHz by
"cooking" it under controlled conditions.
If its a close harmonic the diode might pull fine.
I think the parameters would need tuning but I have four (!) of them and some
other bits which you are welcome to test.
Joe Gwinn
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