[Elecraft] K3 S meter oddities

[Bruce Beford]

> When I plug my headphones into the K3 the S Meter jumps up about 5 s 
> units.  This unit is running 4.31 FW.  I obviously have not tried new
4.39.
 
> Just curious if anyone else has seen this.
 
> Mike W0MU
 
My K3 s/n 559 running 4.39 does -not- exhibit this behavior. As far as I can
recall, it never has. Using Koss and Yamaha phones here. On what bands/under
what conditions? Is it possible you are actually coupling some kind of RF
(not necessarily ham transmissions, but something else in the house/shack)
back into the rig from within your environment via the phones lead?
GL,
Bruce, N1RX