[Antennas] 'interference...'

Wed Jun 17 13:37:05 EDT 2009

Phil....
 Check out  the RFI reflector!   
RFI at contesting.com
Tom K5IID

--- On Tue, 6/16/09, Roy <royanjoy at ncn.net> wrote:
From: Roy <royanjoy at ncn.net>
Subject: Re: [Antennas] 'interference...'
To: Antennas at mailman.qth.net
Date: Tuesday, June 16, 2009, 3:47 PM
Concerning:
"Hi,
I am having trouble with RF interference that is strong on the higher bands 
and
is intermittent. Durations from short times to long periods hours to
days.  Mainly
bad on 17 thru 6mtrs.  Seems to be horizontally polarized (Loud on dipoles
& yagi. Weak on vert ants.)
and ranges from S2 to S9.
Seems to be a repetitive pulsing of some kind and is not random in
frequency.  Not sure
how to tell the frequency of the pulse. On the ICOM pro3 spectrum screen is
the same
pulse freq on all bands.
Have borrowed the subject Radio Engineers finder as a possible test unit to
try but
have no info on using it.  Have experimented with it and use a modified RS
aircraft radio
to connect to it.  Seems to be working as can do some directing but about
same as small yagi.
Not sure if this the right reflector to go to but you all have been most
informative in the
past.  Did try the archives but did not find anything.
Appreciate any info and thanks for reading this."
73  Phil  W9IXX
Phil,
There has been strange sounding QRM on most of the bands, appearing 
randomly, and has been described as gurgling, etc. To me it sounds like a 
spur from a cw station gone awry, but I don't think it's that. Some surmise 
it is over-the-horizon radar from south america.
73,   Roy    K6XK
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