On 11/2/2022 10:21, Garry wrote: > Strong, wide-band signal coming through at 1720Z on 22.7 kHz. On a whim, I thought I'd try from Nevada. SDR with a noise floor around -90dB, and a 10 MHz inverted V antenna. No TACAMO seen/heard, but a few sweeps of a carrier, like those ionospheric sounding systems. It was worth a shot. Kurt