[Elecraft] KSYN3A tuning noise on 40m

[Richard Ferch]

My experience has been that the tuning noise is strongly affected by the 
positioning of the TMP cables, regardless of whether you have the old 
KSYN3's or the new KSYN3A's.

I had heard some slight tuning noise on higher bands with the old 
KSYN3's, but only with no antenna connected, which is not a realistic 
test. After I put the new KSYN3A's in, at first I had much higher tuning 
noise (a buzz or rapid clicks when turning the tuning knob), but I 
opened up the rig and repositioned the TMP cables and since then the 
tuning noise has completely disappeared, even with no antenna connected.

I do not have the VFO tuning noise reduction mod installed.

As for the rapidly tuning birdies (the ones that can be eliminated with 
the CONFIG:SIG RMV option), I have not done a careful check. However, 
while they may appear at different places than they did before (perhaps 
that might be related to a reference oscillator adjustment), they do not 
seem to me to be any worse than they were with the old synth boards.

73,
Rich VE3KI
K3 #1595