[Elecraft] L34 on K2 tuning question?

[David Woolley]

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
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