[Elecraft] diode noise?

[Fraser Robertson]

Geoffrey, as I recall from tests I've done in the past, it doesn't appear to 
be power related, and is not related to the KPA100.  I'm not sure though if 
that completely rules out your suggestion?

BTW, the K2/100 is usually putting out about 50W when driving my tube 
linear, so is just ticking along.

Thanks / 73 Fraser G4BJM

>From: "Geoffrey Mackenzie-Kennedy" <gmk at gm4esd.fsworld.co.uk>
>
>There is the possibility that a Rx /Tx switch in the signal path and using
>diodes, is acting as a noise generator. The noise could be driving the QRO
>stage as an independent source, or could be modulating the drive signal.
>These otherwise excellent switches can generate noise, but usually very
>little unless something goes 'ga ga'. Going from QRP to QRO could make such
>noise 'a problem' especially if something is amiss ('ga ga'). Spectral
>analysis should offer clues.
>

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