[RFI] RFI -14072 kHz

[Gary - AB9M]

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