Dave Champagne wrote:

Need an antenna or some device to locate TV interference.
Interference is local and is within 600 feet of house.
Usually appears on Channels 2, 4, & 5. Somtimes on higher channels.
Appears on screen as electrical noise similar to car ignition noise.
I have detuned FM band to use as aviation band (108-136 MHZ).
Can hear noise on portable radio within aviation band.
Any help would be welcome as we have limited income and can not afford cable.

You'd probably be better off to use a regular broadcast band portable to find the
interference. Trying to use an FM radio will be difficult.

Now, if you had a radio scanner that could pick up AM modulation up in that
frequency range it would be even better.

Good luck tracking it down. It's most likely some power line interference coming
from a transformer or some defective insulators.

Had a similar occurence here late last year, the power company came around and
replaced a lot of equipment! But, the noise is gone, and it only took me a couple
of weeks to get it accomplished after the interference started.

Steve
Holland, MI
Drake R7, R8 and R8B

I agree with Steve. Most likely something defective on a power pole. I had
the same problem which turned out to be a ground wire that was loosely
attached to a transformer housing up on a pole abt 400 feet from the house.
Noise was worse when it was dry out and often disappeared when wet or rainy.
My theory was that the moisture was bridging the air gap of some loose
connection... which turned out the be the case after all. I used a small
homebrew 3-element yagi attached to a handheld scanner on 138MHz in AM mode.
Since the powerlines themselves helped radiate the noise, I needed to add
some attenuation between the antenna and the scanner or else it looked like
the noise came from everywhere. Made detetection of the offending pole and
transformer a breeze. My neighbors thought I was nuts walking around the
neighborhood with this funny antenna hooked up to a walkie-talkie looking
thing and me with my headphones on. But they all thanked me when Pacific
Gas & Electric came out and fixed the problem a week later. That was two
years ago and the ambient noise level from 150kHz and up is S0 on my
Icom756ProII. It used to be S7 to S9 all the way through 54MHz. It was
like getting a whole new QTH !

73's and Good Luck!
Craig

"N8KDV" wrote in message
...


Dave Champagne wrote:

Need an antenna or some device to locate TV interference.
Interference is local and is within 600 feet of house.
Usually appears on Channels 2, 4, & 5. Somtimes on higher channels.
Appears on screen as electrical noise similar to car ignition noise.
I have detuned FM band to use as aviation band (108-136 MHZ).
Can hear noise on portable radio within aviation band.
Any help would be welcome as we have limited income and can not afford
cable.

You'd probably be better off to use a regular broadcast band portable to
find the
interference. Trying to use an FM radio will be difficult.

Now, if you had a radio scanner that could pick up AM modulation up in
that
frequency range it would be even better.

Good luck tracking it down. It's most likely some power line interference
coming
from a transformer or some defective insulators.

Had a similar occurence here late last year, the power company came around
and
replaced a lot of equipment! But, the noise is gone, and it only took me a
couple
of weeks to get it accomplished after the interference started.

Steve
Holland, MI
Drake R7, R8 and R8B