[Elecraft] K1 warble

[Don Wilhelm]

Steve,

See if the DC voltage on the VFO pot wiper terminal also 'warbles' - it 
may be hard to spot with a digital meter, if you have a fast reading 
analog meter, use that and see if the meter needle 'wiggles'
What I am saying is that could be caused by a bad 10 turn potentiometer 
- the voltage at the wiper directly controls the capacitance of the 
varactors and therefore, the frequency of the VFO.

73,
Don W3FPR

w2ses wrote:
> After my K1 runs for awhile the received audio sounds wobbly and the rf 
> output warbles as well.  I am pretty sure there must be a voltage 
> regulation issue, but before I open it up, has anyone seen this? A head 
> start on the problem would be nice.
>
> 73
> Steve W2SES
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