Christmas Eve, 24 December 2024 Transmissions Received at Cohoe, Alaska USA

[Whitham Reeve]

As is usually the case and because of the time zone, I recorded both the I-Q bit stream from the receiver and the demodulated audio for analysis later in the day.

I have only had chance to listen to the audio recording. The SAQ signals were quite strong and I could easily hear the transmission from 0800:00 to 0808:20 UTC. Frequency drift was not discernible. I have not yet analyzed the I-Q spectra. I made some improvements during Fall 2024 that significantly lowered the noise floor at my Cohoe facility and I am looking forward to retrieving the I-Q recordings in the near future.

Equipment: Radio receiver & local antenna
Equipment details: Shop-built square loop antenna, 1.2 m diagonal connected to an SDRPlay SDRduo software defined radio receiver. Receiver operated by SDRuno software.
Additional information: https://reeve.com/Documents/Articles%20Papers/Reeve_CohoeVLFLoopAntenna.pdf and https://reeve.com/Documents/Articles%20Papers/Reeve_SquareLoopAntenna1.2m.pdf

Whitham D. Reeve
Anchorage, Alaska USA

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