On 2/1/2023 12:51 PM, Jim Brown wrote:
On 2/1/2023 4:52 AM, K9MA wrote:
Besides the preponderance of 120 Hz harmonics in the AM audio, the
very broadband nature of line noise is usually the main indicator.
120 Hz is also a strong component of electronic noise generated by
power supplies and power control equipment. The audio spectrum is not
a great clue -- the RF/IF waterfall shows where the bodies are buried.
73, Jim K9YC
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That's true, but I have never seen broadband noise with 120 Hz harmonics
in the AM audio which was NOT power line noise. And, alas, I've seen a
lot of line noise.
73,
Scott K9MA
--
Scott K9MA
k9ma@sdellington.us
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