[amsat-bb] re Pin diodes

[Angus]

Hello all, 
I wonder if anyone is using Pin Diodes for switching IN/OUT pre-amplifiers or using them in a polarity control box.
I have spoken to Mak SV1BSX (very many thanks Mak) and he has given me some very helpful advice, but I wonder if anyone has got them working and if so how and what diodes did they use. Any circuit diagrams?
regards
Gus M0IKB

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