[aprssig] Re: Cell phone and Pager alerts

[KC2MMi]

<<If this system uses a broadcast protocol so
that is targeted to specific info at specific geographical
areas say per "cell phone cell", and the bandwidth is just
the one message that then hits all subscribers in the cell
without the one-to-one-ack-required, >>
 They don't like to publicize specifics. (AlQ has succeeded in terrorizing the
West.)
It is not one broadcast per call, but still one per "each unit registered on
this tower" which comes from the live list of who is connected at any given
time. No ACKs are required though. The initial outreach is something like that
one cell tower "sneezing", a very short burst of data goes out, with zero impact
on the voice circuits.