Is there anything connected to the IF OUT connector on the P3? We've had reports of the LO signal from, for example, an LP-PAN leaking into the P3 via that path.
Alan N1AL On Sun, 2010-09-12 at 11:24 -0700, K4SC wrote: > 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. > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
