One DIT every 7 seconds, 7051 kHz, 0540+ UTC, 17 April 2026

[BoomboxDX]

Earlier this evening I was tuning the 40 Meter CW band, and heard a continuous ditter -- one Dit every 7 seconds, very consistent in placement, like clockwork, S3+ (out of 5), with some fading. As I usually tune the CW section of the 40 M band every late night, this signal is unusual, haven't heard it before. Or, if I have, it was ages ago. As for tone and quality, it was a deliberate sounding dit, not a real quick or sharp one. It was gone by 0900 UTC during a recheck.

The Dit zeroed around 7050.5 or so on my Tecsun PL-330 and XHDATA D808. Both on a second story, indoor 25 ft wire.

[giggletron]

Has this returned anytime recently? Might be worth checking with some remote SDR’s in different locations to rule out the possibility of electronic noise from nearby devices.

[BoomboxDX]

Haven't heard it return, and I'd never heard it there before (or anywhere else in the SW spectrum).

Pretty sure it wasn't a nearby electronic device, as those don't usually propagate or fade. But checking SDR's is probably a good idea next time I hear this, if I do.