[Amps] PIN diode mods

[Peter Chadwick]

Rob said:
>My 7800 can hear no better than my 75S-3C on 20, 17 or 15 meters on weak 
DX. 
Likewise some hams claim the Pro III is so much quieter than the Pro II.<
It's fair to say that for the majority of us, the limit is external noise. Although under conditions with lots of strong signals, phase noise may produce an effective decrease in sensitivity.
Unless you have a PIN with a very long recovery time, it's little more use at HF than teats on a bull.
73
Peter G3RZP