I'm currently in Kershaw, SC. Yesterday an automated signal popped up on a 2m simplex freq (147.455 MHz) and has been running since. It sounds like Morse, but it is random letters that don't seem to have any repeating pattern. After every seeming CW letter there's a kerchunk like a repeater tx closing. Online I find no 2m beacons above 144.xxx and no repeaters on this freq. The signal has a very wide bandwidth. My 2m handheld picks it up from 147.450-147.465 and my scanner picks it up well below that and into the 148.xxx range.
Any ideas what this is and what would be transmitting such a signal? I have audio recorded if that's helpful, but this forum doesn't seem to accept attachments.
UPDATE: Origial, and still clearest freq is 147.455. I connected it into fldigi and I get three simultaneous signals in the waterfall at 800hz, 1600hz, and 2400hz. They wander a bit, but stay pretty tight to those spots. I'm picking up the same signal elsewhere too. I've found it on other freq in 2m and I just picked it up on 10m at 28.565.
UPDATE: Here's a link to the audio file on google drive. https://drive.google.com/file/d/1l88BO4wetOJz8nKgb7GbVS2H4krB9BE9/view?usp=sharing
Update: Got on an old radio scanner and found the same signal on multiple frequencies. If anyone is within a couple hundred miles of Charlotte, NC and has a 2m directional antenna, or knows another ham in that area who does, I'd appreciate comments below with Rx grid square and bearing to signal for any of the following. Signal clearest to me: 147.455 Simultaneously transmitting at: 146.005 146.665 147.565 (this is an open carrier, but has the same characteristics, so I suspect it is part of it.) 147.590 Then we exit the 2m band: 148.865 149.295 149.720 150.8825 151.5575 For reference, a station in Spartanburg, SC picked up the signal weakly at 147.455 from a 9e yagi on a 100' tower bearing about 60 deg.
Someone posted the same signal on reddit at the same freq (147.455). Has been picked up in Greenville SC, Cheraw SC, Columbia/Lexington SC, and Ashville NC. That's a 2m signal covering hundreds of square miles. That shouldn't be possible. https://www.reddit.com/r/signalidentification/comments/r856eb/i_found_this_centered_around_147450_and_147455/
If anyone in the Northern SC or Southern NC area has a 2m yagi and can provide an Rx grid square and a bearing on any or all of these frequencies that would really help me triangulate an area that can be narrowed down. Priority is 147.455.