Geoffrey Mackenzie-Kennedy wrote:
David Woolley wrote:
> I am pretty sure that the birdy is a harmonic of the main
microcontroller instruction rate and is entering before the mixer.
I agree that this is one source, and one point of entry for this
signal.is K16 / K17.
Why do you say that. On my K2, the amplitude depends, in the expected
way, on the settings of those two relays, indicating an earlier
injection point. Note that the microcontroller to which they are
adjacent is shut down during receive, so one should not be picking up
anything from it's oscillator. (The relays are the attenuator and
pre-amp bypass ones.)
--
David Woolley
Emails are not formal business letters, whatever businesses may want.
RFC1855 says there should be an address here, but, in a world of spam,
that is no longer good advice, as archive address hiding may not work.
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