This is not an OTHR.
I don't know what it is, specifically, but for a variety of reasons (features of or missing from the signal) I know it is almost certainly not a radar. Or if it is (since almost any signal can be) a radar it is an extraordinarily poorly designed one. I suspect it is data of some kind, but to get a better handle on what it is would require a different recording, preferably an IQ recording or an audio recording in FM or SSB (I prefer USB) that captures both "carriers" and everything between them.
T!