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A comment on The US Army’s costly quest for the perfect radio. Parent comment

Re:The US Army’s costly quest for the perfect radio by pps43 on Tuesday March 20, 2018 @02:52PM (#16631432)
APRS and packet radio existed since the '90s. They handle routing and multiple participants, and are rather resilient to interference.

There is no encryption and no frequency hopping not because it's difficult to do, but because the goal is to be heard and understood by anyone who listens.

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Re:The US Army’s costly quest for the perfect radio by gamblor956 on Tuesday March 20, 2018 @03:33PM (#16631792)
APRS does not have the reliability necessary for commercial use, let alone military use. Packet radio is pretty trivially jammed, handles routing poorly and interference almost not at all.
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