[Elecraft] P3 Continuosly Offset Waterfall Trace

[K4SC]

The subject is terse, so here is what is happening.  I notice a very narrow
but steady vertical line on my waterfall which does not move when I QSY. 
This occurs only in CW mode and I can see it when the SPAN is narrow, ±5 kHz
or less.  It appears to vary between bands but in the range of -600 to -800
Hz from the center frequency.  All other real signals track when I move the
VFO, but this one just stays there, as if you drew a vertical line on the
display.

As I am writing this description it occurred to me that it may be related to
the CW sidetone, and sure enough, when I adjust the PITCH, the offset varies
in relation to the center frequency of the P3 display.  In other words, when
I raise the PITCH frequency the trace moves upwards; decreasing the delta
between center and trace frequencies, and vice versa.   I put the radio in
REVERSE CW mode to see if the trace would move to the positive side of the
center frequency, but it just disappears.

I am a total novice to panadaptors or spectrum analyzers, so if this is a
normal "thing", I am unaware.  It really does no harm, but I noticed it
because I am using the waterfall a lot this weekend during the SKCC Weekend
Sprint and I mistook it for a carrier that could never be heard.

I can not say whether it has been there all along or is a new quirk, as I
just noticed it today.  I have removed and replaced all connections to the
P3, ensuring their proper fit and tightness.

Any thoughts?  
-- 
View this message in context: http://elecraft.365791.n2.nabble.com/P3-Continuosly-Offset-Waterfall-Trace-tp5523982p5523982.html
Sent from the [K3] mailing list archive at Nabble.com.