[aprssig] APRS on UHF?

Scott Miller scott at opentrac.org
Wed Nov 26 16:28:01 EST 2008

None that I know of.  The OT1+ in the RTrak has the 1pps line connected, 
and would take only a line or two of code to sync the internal clock to 
the 1pps signal, but I haven't tested that yet.


Patrick wrote:
> What trackers currently support this?
> p
> On Wed, 26 Nov 2008 11:30:29 -0800, Scott Miller wrote
>> And aside from that, for slotted ALOHA it's the 1pps output you need. 
>> The idea is that since you probably can't hear the other users of the 
>> channel anyway, it's better to step on one discrete time slot and cause 
>> only a single collision rather than clobbering multiple packets.
>> I think there are better ways to do channel access control, but slotted 
>> ALOHA doesn't require any real coordination.
>> Scott
>> N1VG
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