Specifications

VP ONCORE COMMAND REFERENCE
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SATELLITE VISIBILITY STATUS MESSAGE
(@@Bb)
This command requests the results of the most current satellite alert
computation. The response message gives a summary of the satellite
visibility status showing the number of visible satellites, the Doppler
frequency and the location (azimuth and elevation) of the currently visible
satellites. The reference position for the most recent satellite alert is the
current position coordinates. Note that these coordinates may not
compare to the GPS receiver's actual position when initially turned on,
since the GPS receiver may have moved a great distance since it was
last used.
Default mode: Polled
NOTE: If more than 6 satellites are visible, this message is simply output
several times by the receiver, with any unneeded fields filled with zeroes.
This same message is also used by newer 8 and 12 channel Motorola
receivers such as the UT+, GT+, and M12. Again, if more than 6
satellites are visible, the message is simply output several times in order
to convey the additional information.
74 Synergy Systems, LLC 05OCT01