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• Automatic channel access control to limit collisions from
other stations
• Built in acknowledgment protocol Automatic Repeat
reQuest (ARQ) that guarantees accurate message
reception.
• The radio automatically selects the data rate based on
transmit power and channel conditions.
• Return receipt confirming successful storage of message
at destination.
HPW System Features
• Each HPW station has a unique network address
• Half Duplex communications only
– SATCOM operates on two frequencies
– LOS typically operates on one frequency
• Three operator selectable communications modes
– Point-to-Point. Messages sent to one net member; ARQ and non-
ARQ modes
– Broadcast. Messages sent to all members; non-ARQ mode only
– Multicast. Messages sent to up to five members; ARQ and non-
ARQ modes
HPW Network Connectivity
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