[SixClub] Interference question?

[Christopher Boone]

Probably the HT is having IMD internally...that's why you DONT hear
music on the 706 when tuned there...
Only use a HT for CLOSE problems (usually with a PAD in front of it) and
then I only use a 220 HT because of IMD issues like you are
experiencing.
 
If noise goes away after/during rain or heavy dew, you have an arc
somewhere...loose hardware OR ground wire too close to charged piece of
metal
(washer, etc!).....forget 135MHz...that is not an issue (yet).....Do you
have a TV2 nearby? And have you tried to tiangulate the 6m noise? (dont
bother using 2mtrs..
the noise will be lower or gone at that freq unless it is VERY high on
6)...
 
Try going mobile with the 706 on 6m and see if you can find the noise
source in the direction you see it from the house....
Lowband noise can travel for miles on overhead (it IS overhead and not
URD or Underground I assume?)
 
Chris
WB5ITT
Former Sr TVI Investigator (that and 75cents got me coffee every time at
that French place, Jacque in the Beaux :)
GSU/Entergy, TX

-----Original Message-----
From: sixclub-bounces at mailman.qth.net
[mailto:sixclub-bounces at mailman.qth.net] On Behalf Of Doug Huchteman
Sent: Thursday, May 20, 2004 11:40 AM
To: sixclub at mailman.qth.net
Subject: [SixClub] Interference question?


I still have a noise source on 6 meters located to the E of my station.
S7 at times with a raspy sound like a diesel truck going up a grade.
Noise still goes away when it's raining or after a heavy dew.  Noise is
persistent from 40 mhz to 60 mhz.
 
 Took my trusty IC-W32A handheld and a portable 2 meter  homebrew 3 el
beam and climbed to the roof of my backyard shop building hoping to
locate it and tuned to 135.000 mhz and beamed around.
 
Beaming E I hear MUSIC on 135.000 mhz.  Tracked the source and found a
spot 2 blocks away that seems to be the strongest (darned strong).  Even
there the music seems overmodulated and is not clear at all just strong
signals.
 
Now, back at the station I tune the 706 to 135.000 mhz  and point the 2
meter beam East and have interference but no music.  
 
My electric company interference crew has repaired the hardware on 15
poles in my area and reports the area clean.  My cable company reports
the area clean with no cable leakage (and in fact CH 18 145.250 does not
show leakage on my rig).  I haven't been able to locate this same music
on any of the FM freqs locally.
 
Any ideas guys and gals???
 
Doug Huchteman KD5VHZ EM15
6MT # 2124     SMIRK # 6556

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