Evidently this occurs only when you are receiving in SSB mode.
The tone frequency is independent of receiver tuning or calibration in AM
Thus, something in your SSB receiving chain is changing frequency in the
manner you described. If it is slow enough, you might spot which oscillator
is doing it with a frequency counter.
72/73, George W5YR - the Yellow Rose of Texas QRP-L 1373 NETXQRP 6
Fairview, TX 30 mi NE of Dallas in Collin county EM13qe SOC 262
Amateur Radio W5YR, in the 56th year and it just keeps getting better!
Icom IC-756PRO #02121 Kachina #91900556 IC-765 #02437
"Dave Kamp, KW0D" wrote:
> Okay, here's a wierd phenomena;
> I tune to WWV, and listen to the 400ish Hz tone transmitted between
> announcements and dead 'ticks'...
> The tone slowly creeps up about half a musical step, then jumps back
> down... creeps up, jumps back down... creeps up... you get the idea...
> Never had this happen with any other rigs.
> Whassamatter here?