For the past week I’ve seen a –90 dBm signal about 750 Hz wide nearly centered
on 14072. I think it must be originating on the East coast as it does null with
the beam North or South. The signal seems to run 16 to 24 hours a day while I
try to monitor the 20 meter PSK-31 sub-band. A TimeWave ANC-4 knocks the signal
down 6 dB. The Power SDR manual Tunable Notch Filters will take the audio
signal out completely, but that’s a big hole in a 3 kHz band!
I do not know how to decode this wide signal. Any help identifying the source
of this interfering signal is greatly appreciated.
73 & DX,
Gary - AB9M
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