I'm a fiction writer, and one piece of a story I'm working on is a shape I've never been able to place, so I'm asking the people who actually log signals instead of guessing at it.
The fictional transmission runs like this: an open voice channel, a female voice, calm — maybe too calm. She starts mid-word: "— anyone on this channel, this is —". Then a ship name, then a position string that never finishes. The whole loop runs about 47 seconds and always restarts just before the coordinates land, so the tail is eaten every pass. The first passes are identical, word for word, same breath. On a later pass the pitch drops, like she's reciting a thing she's stopped believing. And under her voice there's nothing — no drive hum, no fans, no alarms. Just her and the carrier.
My question for the logbook crowd is not a logging report and I'm not asking anyone to log a catch on my behalf. It's this: does the shape of it ring a bell in anyone's old notebooks? Has anyone ever logged, or heard talked about, a repeating loop like this — a mayday that eats its own tail before the position lands, dead air under the voice?
Fair warning up front: I have no recording, no frequency, and no date to give you. It's a story question, pure and simple. If nothing like this has ever crossed your logs, that's a perfectly good answer and I'll take it. If it has, I'd honestly like to hear how you'd write up a loop you never placed.