> I don't have the details of the over-the-air format, but I believe
> Scott has actually experimented briefly with a Infinity GPS mic and
> might know more than I do about the format. I don't know of any way to
> decode this over-the-air, other than purchasing a compatible unit.
It's 1200 baud MSK, and not directly APRS compatible. Not sure of the
format. I captured a bunch of packet audio, and then a couple of
packets straight off the modem IC's digital input. Wish I'd grabbed a
few more of those. In any case, I haven't had time to do much analysis.
I was really hoping that they weren't using a hardware modem, so it'd be
hackable for APRS compatibility.