[aprssig] APRS on Android

Bob Bruninga bruninga at usna.edu
Tue Jan 25 17:16:12 EST 2011

>> Some igates CAN reverse-gate other traffic...

> I did a test not to long ago reverse Igating.
> on a dedicated 9k6 channel it is very realistic 
> to stream a 500 km range in europe and still only 
> use about 50% or less of channel time, because
> it was a dedicated frequentie there was no aloha 
> effect or slottime and txdelay problem, this 
> improved efficency a great deal.

Absolutely.  A great way for those folks running laptop mobile/portable.
And since the input frequency would be full duplex on another frequency, the
mobile-to-APRS-IS link would be very clear too.  Yes, this is a great way to
run APRS.

But on the other hand, I'd say that 96% of all APRS mobiles these days do
not carry laptops but simply use an APRS radio with GPS display.  In that
case, most users would not dial into this channel, because it would fill
their radio lists instantly with so much out-of-area spam as to completely
mask the local situational awareness that the radio front panel was designed
to give.

Just two sides of the pie..

Bob, Wb4APR

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