[Elecraft] New synth board and birdies

[lstavenhagen]

I have a birdie in my K3 at about 21.022 mhz that I believe accompanied my
synthesizer upgrade. It's about S1 with no ant and the preamp on - I tried
moving the cabling around inside the rig and it had no effect at all. 

Apart from that, I just have the "zipper" sound when tuning on certain bands
now (on 10 meters on my K3 and my K3S does it on 6 meters), which is known
about and normal. Fades almost completely when I have a resonant antenna on
10M

But the birdie is there and audible when I'm /p where 21mhz is very quiet.
It's not present in my K3S, so no idea what it is...

73,
LS
W5QD



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