[Top] [All Lists]

[TowerTalk] Does the JPS ANC-4 work?

To: <>
Subject: [TowerTalk] Does the JPS ANC-4 work?
From: (MarchandJohn)
Date: 31 Dec 1997 14:33:57 -0400
Hi Doug,

This sounds familiar, but dont laugh at what I'm gonna say......

Seems to me there was a thread back awhile where someone was getting the
same "type" of noise. He finally tracked it down to a doorbell transformer.

Since you cant find a direction of the noise and its strongest at your QTH,
see if you can get a handheld scanner and tune it to a VHF aircraft band
(AM) freq., and take a walk around your house and property. If noise is too 
strong take the ant off. 

It could be the doorbell transformer or maybe a light dimmer..(wild guess)

Just a thought, but it may get you on the track of the noise..

73 & HNY
John K1RC
35 mi NW of Boston
From: Doug Brandon on Wed, Dec 31, 1997 1:55 PM
Subject: [TowerTalk] Does the JPS ANC-4 work?

I've been plauged with some pretty bad local noise for quite a while now.
It sounds like power line or some other sort of mechanically generated
noise that shows up out of the blue and stays on at a constant high level 
for many days at a time.  It doesnt just go away, but sort of "bleeds" off
and slowly diminishes in strength over a few days until it completely
disappears.  Sometimes it is quiet for weeks, and other times it doesnt
go away for weeks.  The noise blanker in my 930S manages to chop it down
from S8-S9 down to the S3-S4 level, but obviously strong adjacent signals
cause the front end to chop like crazy.  I've tried to keep a log of when
it occurs to see if there is any sort of pattern, but I gave up since it
seems to be pretty random.

The noise doesnt peak in any direction when I turn my beam.  I've also
walked around the neighborhood with a transistor radio and was unable to
find anything.  The noise is strong on HF, VHF, UHF, and even causes
sparkles on my cable TV.  I have another ham friend who lives about a
mile away and he doesnt experience this, so I know it's something in
or near my neighborhood.

Anyway, the bottom line is that I'm wondering if anybody has used the
JPS ANC-4 or corresponding MFJ product with success.  I've heard they
do a pretty good job with man-made noise which is what I seem to be
dealing with.  I doubt I'll ever get rid of this noise, so I'm hoping
one of these devices will help my situation.

   73 de Doug, N6RT

FAQ on WWW:     
Administrative requests:

<Prev in Thread] Current Thread [Next in Thread>