John:

I'm not sure of the exact source of the noise you are experiencing, but this
might help.

The following link appeared in the Wednesday: April 2 2014 edition of the
Handiham World Weekly E-letter.
 
The link helps you listen to, and hopefully identify common sources of RFI
that may be getting into your ham radio equipment:

http://www.arrl.org/sounds-of-rfi

The sound files are excellent!

 Good luck, and let us know if you successfully track things down.  In my
view, problems like this are getting worse, since there are now so many
things that seem to run on switching power supplies that are not well
regulated.


Tom Behler: KB8TYJ

 
-----Original Message-----
From: For blind ham radio operators [mailto:[log in to unmask]]
On Behalf Of John Glass
Sent: Wednesday, August 06, 2014 1:23 AM
To: [log in to unmask]
Subject: A Noise Problem I Am Having

Hi,

I am trying to track down an intermittent noise problem, and any suggestions
will be greatly appreciated.

I live in a condominium, and have an upstairs neighbor.

The intermittent noise covers the am broadcast band up through the 440 ham
band.

When listening to a repeater, I can hear the noise start out at a low level,
then it gets very strong and will take the local repeater completely out of
my receiver for about five seconds.
The noise seems to sweep in frequency.

Unfortunately, it is very random, sometimes I won't hear it for several
hours, and at other times, It is present every few minutes.

I have turned my main ac circuit breaker off with no effect, so I think the
source is coming from my neighbor's condo.

Any ideas of what might be causing this?

John