|
6.25/12.5 KHz Channelization |
Channels are assignable on 6.25 and 12.5 KHz spacing and
operable at 6.25 and 12.5 kHz bandwidth. |
| Audio
Enhancements |
Variable
ratio audio compression with background noise-reducing
gain expansion and low distortion soft limiting to compensate
for user microphone technique and minimize distortion
in the A/D process. |
|
Audible User Prompting |
Tones of varying frequency, duration and pattern are used
to alert the operator of various conditions such as busy
channel, timeout timer,etc. Such tones can be muted by
the operator for covert or silent operation. |
|
Auto Registration |
A unit which is powered up and discovers a control channel
at a particular site will be registered to that site.
If it drives out of range of that site, it automatically
searches for a control channel strong enough to be useable
and registers there. A message is sent to deregister it
from the previous site. No operator action is required,
and internally adjustable levels cause this transition
to be done in an orderly manner depending upon received
signal levels. |
|
Available Bands 150-170 MHz, 220-222 MHz, 380-420 MHz,
and 450-520 MHz. |
DWC
Base Station Repeater, Mobile and Portable cover these
frequency ranges with full specified performance. |
|
Blocked Cell Message Transmission Guarantee |
When a member of a talkgroup is registered on a cell that
is blocked (all channels busy) and a group call is made
to that member's talkgroup, the DV/IP system guarantees
delivery of each voice message to every talkgroup member
because messages are stored in the Site Router at each
cell, and transmitted on a first-in, first-out basis.
Competitive systems drop from a call all group members
that are at blocked cells. |
