[Elecraft] P3 - spikes that never move

[Fred Jensen]

Anthony,

Been out of town, didn't see a reply to you when I got home and 
downloaded 500+ emails. :-)

What P3 mode are you using?  There is an identified problem with the 
K3-->P3 IF cable.  In Fixed Tune mode [where the ends of the span remain 
fixed and the VFO cursor moves as you tune], the bad IF cable will put 
weak signals approximately 14.5 KHz above and below the cursor.  They 
move with the cursor hence you can never tune to them.

Signals that slowly move by themselves are almost always external to the 
K3/P3.  Our world is filled with a nearly countable infinity of RF 
noisemakers these days.  CFL light bulbs are notorious and could account 
for the slow disappearance as they warm up.

If your signals disappear when you remove the antenna, that's a pretty 
good indication that they're external to your radio.

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2013 Cal QSO Party 5-6 Oct 2013
- www.cqp.org

On 3/3/2013 11:08 AM, Anthony Lewis wrote:
> I have three spikes on my P3, however they do move - very slowly they will creep along the display. When I have P3 set to maximum span 200kHz, they repeat themselves.
> They are there at switch on, but seem to slowly disappear over 10-15 minutes. I have changed IF cable, but that did nothing.
> Any ideas?