|
Busy Channel Lockout |
Except for priotity overrides, no users can transmit while
the unit is receiving an active transmission. Inadvertant
blocking of a channel by an accidentally keyed transmitter
is usually corrected by the internal timeout timer. |
|
Cellular Architecture |
Although the transmission method employed by DWC products
allows Base/Repeaters to be sited on mountaintops and
cover long ranges, the flexible and inexpensive networking
options possible, combined with our Dynamic Frequency
Allocation technique, make Cellularization an attractive
choice for spectrally efficient frequency reuse from lower
level sites |
|
Continuous Update Assignments- Late Entry |
Units belonging to a group, but not powered or out of
range, or units which have made selection of a group with
a transmission already in progress, are automatically
switched to the transaction channel and joined with the
group conversation in progress, and so do not have to
wait for initiation of a new group call to be included. |
|
Covert Monitoring |
A command can be issued from the control console to activate
remotely the microphone and transmitter of any unit so
authorized by the system manager. No external indication
of this activity is displayed on the target unit. This
can be used for welfare checks, to monitor activity discreetly
after receipt of an emergency alert, etc. |
| Covert
Tracking |
DV/IP
mobile radios may be programmed to keep the radio and
GPS tracking live when the user switches the radio off,
in order to provide tracking when the user believes the
radio is off. |
|
Diversity Reception |
The Base Station Repeater includes two identical receivers,
and is designed to be connected to two receive antennas
in order to correct fading and phase cancellation by 3-6
db with a corresponding increase in range. |
