[Elecraft] Correction P3 Noise Gremlins
Randy Farmer
w8fn at tx.rr.com
Sun Dec 4 17:15:31 EST 2011
It's not coming through your antenna. I see the same thing here in north
Texas, especially if there's not much in the way of received signals and
often at power-up. It doesn't seem to matter which band the radio's
tuned to. It's definitely some kind of pickup within the P3 box,
probably from an internal switching power supply. When it shows up I can
move it around and make it come and go by putting some pressure on the
top of the enclosure and flexing it a bit. I've always intended to crack
the case and see if I could get the noise to appear and maybe fool with
cable dress to see if that's the cause. It's not enough of a problem to
get me to put it at the top of my agenda.
73...
Randy, W8FN
> 2. A more broadband, bump in the reference level runs across the
> screen, maybe 20-25 KHz/sec, again usually down in frequency but not
> always. It's definitely some sort of broadbandish signal coming in on
> the antenna. I've never heard anything as it goes by. I'm about 25 mi
> from Beale AFB with the PAVE PAWS radar and numerous other electronic
> systems the USAF never talks about. I'm a bit suspicious, but it's
> certainly not a problem.
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