[Boatanchors] QRM

Al Parker anchor at ec.rr.com
Tue Jan 10 07:18:29 EST 2006


Hi Larry,
    I agree with Glenn.   I had a similar problem, chased it down to the
computer monitor, without any doubt.  Bought a new flat-screen monitor &
solved it. (nicer viewing, too.)  Same 65+- kc spacing.  It had one
sitting on 14.300 net freq., and I did at least move them some by changing
the refresh rate of the monitor.
    I did put a small sniffer coil on the end of a long length of coax, it
was worst at the upper right corner of the screen.  Tried shielding, &
ferrite cores on leads, etc., no help.
73,
Al, W8UT
New Bern, NC
BoatAnchors appreciated here
http://www.thecompendium.net/radio/
  soon to be at http://www.boatanchors.org
http://www.hammarlund.info

----- Original Message ----- 
From: <telegrapher at att.net>
To: <boatanchors at mailman.qth.net>
Sent: Monday, January 09, 2006 11:28 PM
Subject: [Boatanchors] QRM


> What would have a raspy signal every 65 kc?  I hear it on all my
> receivers, R-388, 51J-4, SP-600, AR-88, FT-990 etc.  All over the place.
>   1885 Kc, wipes out signals from local hams transmitters, again at 1949
> kc, 2014 KC and again (in the am portion of the band) 3859 kc but drifts
> around here.  Almost makes me think of a TV transmitter oscillator but
> on 160 meters where it's the strongest, some kind of teledata like what
> you might hear down in the 200-400 kc band.  Runs from S-9 to 10 over on
> 160 meters.
>
> I've turned off everything, unplugged stuff changed antennas around,
> checked grounding and antenna connections to no avail.  No touch lamps
> here and no battery chargers for cell phones etc.  BTW, i found that
> plugging my cell phone charger for the truck into the cigarette lighter
> outlet tears up the AM band.
>
> It's not 65 kc apart on 80 meters but about half that.  Don't have
> anyone really close to me that could listen as well but no complaints
> from hams 12 or so miles up the road.  This is driving me nuts.
>
> I'm suspecting something from a neighbors house but that can be a
> delicate situation.
>
> Larry
> W0OGH
>
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