Audio recording:
https://sdellington.us/hr/RFI/NW%2020m%20AM%2023.01.31.mp3
On 1/31/2023 5:06 PM, Stephanie WX3K wrote:
Audio recording ?
Stephanie WX3K
On Jan 31, 2023, at 5:59 PM, K9MA<k9ma@sdellington.us> wrote:
I have what appears to be very strange RFI source: it's very broadband,
covering at least the whole 20m band, but it's somehow modulated at 1100 Hz. In AM
mode, the 1100 Hz tone is audible and it, as well as the second harmonic show up in
the audio spectrum. The tones are present wherever the radio is tuned on 20 meters.
It's as if a broadband noise source is modulated at 1100 Hz. I have heard the tone
shift frequency. Not a solar system, as it's present at night. Any idea what this
could be?
73,
Scott K9MA
--
Scott K9MA
k9ma@sdellington.us
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Scott K9MA
k9ma@sdellington.us
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