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(PeteCresswell)

Per :
As another poster pointed out, radio systems can be completely
separate from all traditional infrastructure. With solar charged
batteries, they can go on indefinitely with no central infrastructure
at all. Combining radio with digital transmission could increase the
effective bandwidth far beyond the limitations of voice communication.
The only reason why we consider grid power to be absolutely essential
to communication is because it was cheap and reliable when our current
systems were developed. There are certainly alternatives.

I always thought that it would be useful to have a standard for power
sources on cell phone towers, repeaters, and so-forth so that, in a
disaster, a given tower/node can be powered using the omnipresent
12-volt automobile battery.
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Pete Cresswell