rickman wrote in :

The signal is PSK.

My sight isn't very good. That's Psk, not Fsk... Phase? What did I miss.
I've been hung up on the notion that this is an MSF time signal thing, and I
just looked at the spec for the UK one which is a simple switch on/off of a
carrier, so easy to detect efficiently. Yours is something else entirely, but
what? You may need to lay a lot more cards down before you find an answer you
can use, unless you hunt in the dark. (No reason not to, I usually do, on
most things I do, as the net usually makes some light at greatest need).