[Elecraft] K3 QSK

[Ron D'Eau Claire]

I sat down in TEST mode and tried all the combinations you mentioned again
and can't produce thumps. I even tried every possible combination of AF/RF
and MON levels with no thump. 

So I'm sri to say obviously something is different between our rigs and
setups, but I can't imagine what. 

The only audio mod involving a change on the main board is to change a
choke, not a cap. It reduces the resistance of the choke to improve the
voltage regulation at the AF Amp. I've made that too. When I said my K3 was
"stock" Elecraft, it does have the Elecraft-approved and documented mods
made while writing the app notes. 

I asked wondering if the capacitor changes some have made to improve the
low-frequency response were making the low frequency 'thumps' stronger and
audible. If you've not done them, we should have similar rigs. 

Ron AC7AC

-----Original Message-----

The only audio mod made to both rigs deals with the cap change on the corner
of the main board. Also, you don't need to be transmitting. You can hear the
thumping in the TEST mode.

73,
N2TK, Tony