In the 'old days' if it repeated every 15,750 (B&W)
or 15,734 (color) Hz it was a TV set -
- this sounds more like a PC monitor as you
described it, although the old TV sets didn't
produce garbage 4 or 5 KHz wide though.
Occasionally I find my PC CRT monitor produces
garbage on HF - switching it off confirms it each
What does the 4 or 5 KHz stuff sound like - raspy
like 60 Hz modulation or a broader 'white noise'
----- Original Message -----
Sent: Thursday, December 30, 2004 8:42 PM
Subject: [RFI] Noise - What to look for?
> I am observing a S5 noise source that is 4 or 5 KHz wide on 80m. It r
> repeats every 23 KHz all across the band. This pattern is also apparent on
> 160m and 40m, but the signal is not as strong. What kind of source should
> be looking for?
> Jeff Burns
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