K3 [#642] w/P3 in FixTune mode [cursor moves, ends of screen are fixed].
K3 has the resistor mod to increase the 8 MHz IF output. I see them
on CW, I haven't tried SSB.
I've got a pair of weak, steady spurious signals ~14.5 KHz above and
below the VFO A cursor. They tune with the VFO [i.e. I can never tune
to them] With a noise floor around -135dBm, they run about -115 dBm. I
see them only on 10m, however my noise floor is in the -120 to -115dBm
range on other bands and they may be there and I just can't see them.
With no antenna, the signals appear to be each bracketed by two very
weak bands of noise about 2 KHz wide, about 3 KHz above and below each
signal. They only show up on the waterfall [I use a monochrome WF].
The K3 and P3 appear to be working just fine and I only notice them
because when I tune VFO A, I end up with faint slanting traces on the
WF. Anyone have an explanation?
73,
Fred K6DGW
- Northern California Contest Club
- CU in the 2013 Cal QSO Party 5-6 Oct 2013
- www.cqp.org
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