[Elecraft] K2 audio issue on CW T/R transition

[William Eric McFadden]

My K2 has recently begun making a slight bit of a "chirp"-noise in my
headphones on the T/R transition when I do CW. Not a chirp in the classic
CW sense of the word, when the other guy hears it, but a little bit of a
tone in my own headphones.

My K2 is a 10-watt "rev A" unit, firmware revision 2.04P 1.09 with KSB2,
K160RX, KAT2, and KNB2 options. The only thing I've done to the rig
recently is to replace the AF and RF gain pots and I didn't notice this
"chirp" phenomenon until sometime after I replaced the pots. This K2 does
not have the alternate AF mod installed.

I've noticed this phenomemon in 80m CW, and I key with a manual key. I've
heard it with crystal filter settings of 700 and 400Hz. It doesn't seem to
matter if I have AGC set to fast or slow. I do tend to have the RIT
engaged--my QSO-buddy's old OMNI D has a bit of drift.

Any suggestions? Did I break something when I replaced the pots?

Tnx es 73,
http://home.frognet.net/~mcfadden/wd8rif/radio.htm

Eric, WD8RIF