At 04:15 PM 3/6/03 -0500, Bill Fuqua wrote:
>I would expect the shot noise from the random arrival of the electrons
>(shot noise) on the anode would
>create so much noise that you could not hear any stations at all. That is
>one problem with
>electronic TR switches is that on receive you have to bias off the final
>otherwise the
>noise is too much. Discovered this with my Johnson Challenger in the
>60's. It had
>a clamp tube that limited plate current on transmit but did not cut it
>off. Makes a great
>white noise source.
It was a class C amp which, as I recall, was totally shut off on
receive. The thing worked FB as a QSK TR switch, while it lasted.
73, Pete N4ZR
The World HF Contest Station Database was updated 23 Feb 03.
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