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[aprssig] Re: APRS for a near-Arctic hot-air balloon flight -- TinyTralk and OpenTrak 300 baud mode

Ryan Butler rbutler at tsss.org
Wed Dec 7 02:14:28 UTC 2005

AFSK Manchester coding, two tone.


Quoting scott at opentrac.org:

>> Yes and No, Manchester encodede FSK is sent up to AO-16 on
>> FM, and the
>> downlink is 1200 baud PSK SSB, so for the opentracker, we're only
>> interested in Manchester encoded FSK on FM, it's sounds just like
> So is it AFSK (Manchester coding with two tones), or baseband FSK?
> Scott
> N1VG

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