[Elecraft] Strange K2 Behavior?

[David Woolley (E.L)]

Michael Lewis wrote:

> Worked a mobile station in TX, and then casually tuned up the band. I 
> actually tuned out of 20m by a little bit up to 14359 (14359.03 on the 
> display to be exact) and BAM! I got an S9 tone. It goes from totally 
> quiet to S9 as soon as the tuning display hits 14359.03. happens with no 
> external antenna. It obviously must be an internal birdie, but I don't 

I suspect the design policy was that the spurious responses should not 
be controlled outside of the amateur bands, and this one may have 
dictated things like IF frequencies specifically to avoid its being in band.

> ever remember one that seems to be so abrupt - it's like something 

The reason for abrupt changes is that the K2 steps the synthesizer ratio 
relatively infrequently and interpolates by pulling the reference 
oscillator frequency.  The sudden onset probably corresponds to a 
synthesizer step and corresponding jump of the reference oscillator 
frequency to the other extreme.
-- 
David Woolley
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