The sweep I was referring to I've been hearing for years, anywhere
between 2 thru 9 MHz. Never heard it higher than that, I think.
According to my notes last summer you could often hear the short chirp
on 40m close to the ODD minute. It sounded like a raspy Morse "H". The
sweep rate would accelerate from approx 50 kHz/s at the low end to 200
kHz/s up near 8 MHz.
(I used to log all that kind of stuff as an SWL: "Giant Step, Giant
Step, this is Retail. Do not Answer...")
73,
Drew
AF2Z
On 10/29/17 18:59, lmarion wrote:
Interesting. These are RF peaks, that move across the 1.8 to 2 MHz
band, for instance. They often stop on QSOs in progress, or flow thru
them, sometimes reverse, may disappear, may take off in either
direction. I assumed they are human caused. ???
73 Leroy
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