On 2/18/2019 12:36 PM, Bob McGraw K4TAX wrote:
One of the first things to do is isolate the noise to two sources in
general. (a) inside the house, (b) outside the house.
My approach is to use the 12V battery off of the lawn tractor to power
the transceiver. Use the antenna and band which provides the worst
noise.
Great advice. BUT -- when doing this, make sure that all UPS units are
powered off, both because they are noise sources themselves, and because
they keep some equipment running that's also likely to be a noise source.
Lots more detailed advice in http://k9yc.com/KillingReceiveNoise.pdf
Another important delineation of noise type is between 1) electronic
noise, generated by electronic equipment, solar power systems, variable
speed motor controllers, and switch mode power supplies; and 2) impulse
noise, mostly generated by arcing on power lines, electric fences, and
neon signs.
73, Jim K9YC
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