A device and method for operational switching between line-of-sight wireless
communications
transceivers requires evaluating a useful received signal strength intensity (RSSI)
for a first transceiver, and switching to a second transceiver when the consequent
bit error rate (BER) is not useful for the first transceiver. Subsequent switching
between the first and second transceivers is accomplished in accordance with a
timed sequence regimen that involves variable time delays, and considerations of
RSSI changes within determined time periods. Preferably, the first transceiver
transmits and receives on a laser beam and the second transceiver transmits and
receives on a microwave beam.