My AOR 8200 MK111 Auto-sets 4.0 KHZ to USB. The signal sounds like somebody beeping out Morse code, except the beeping appears to be too much the same to be Morse.
This new hobby of mine is literally causing me to lose sleep, as I was about to get some, but had to go outside to get reception to record this. It does sound like a very faint A.M. broadcast mixed in with the beeping at the beginning of this - around 10 - 20 seconds in.
I saw the next reply, stating it was RTTY. Is it possible to decode this? I uploaded a clip to a public site: