I have a repeater here in Connecticut on 53.41Mhz and occasionally have
noise problems. I did the receiver noise test on my repeater several years
ago and was amazed at the amount of sensitivity is lost due to ambient
noise on 6 meters! I don't remember the numbers, but do remember it was
substantial.
The last noise I tracked down was a streetlight that was stuck in the
"start" mode about 1/4 mile from the repeater. I called the local power
company and reported a bad streetlight starter, along with the town,
street, and pole number. A couple days later my wife called and said the
power company was in front of our house working on the power lines. (I'm
about 10 miles from the repeater, different town). They changed the
insulators up and down the street from my house with "RFI" type
insulators. These are all nonconducting, even the hardware. I called them
back, thanked them for what they did, and informed them that they were 10
miles and 2 towns off! My house is very RFI quiet now. Through their
wonderful computerized service department, they used caller ID to locate
the trouble and never listened to the report. That's progress.
Anyway, they fixed the streetlight and things have been quiet since. All I
get now is a tick sound every few seconds. This is the tower strobe
firing. I figure this is a good thing because I can keep track of the
tower light night operation quite easy from my house. That's the least I
can do as a good tenant.
Cold, dry, windy days can raise havoc. The static noise can get quite
bad. 6 meters is generally a noise bad compared to other repeater
frequencies. It helps to occasionally bring a scanner to the site that
receives AM mode. You will be surprised at what you might hear on AM that
only amounts to reduced FM reception with no clue of a problem. Lots of
time, you can listen to the noise on AM an identify it, especially TV and
CATV signals.
73, Joe, k1ike
At 05:57 PM 1/2/2005, you wrote:
>So my first question is has anyone any experience or thoughts on using a
>device like the MFJ-1026 noise canceller or any other tricks to improve the
>receive situation? Or is this just "how it is" on 50MHz?
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