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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