User's Manual

21
English
RADIO OVERVIEW
TRUNKED RADIO SYSTEMS
The MTX850 and MTX950 radios can operate
on both Privacy Plus™ trunked and
conventional radio systems.
Conventional typically refers to radio-to-radio
communication, sometimes through a
repeater.
A trunked radio system allows a large number
of users to share a relatively small number of
frequencies without interfering with each other.
The air time of all the repeaters in the trunked
system is pooled, which maximizes the amount
of air time available to any one radio, and
minimizes channel congestion.
Some of the benefits of trunked two-way radio
systems are:
• No channel monitoring required prior to
transmission.
• Improved system access.
• Automatic channel selection.
• Increased privacy among members of the
same group.
• Only one attempt is required to access the
system. If all channels are busy, the call
request enters a queue and the central con-
troller automatically assigns the next avail-
able channel. Two (2) medium-pitched
tones followed by one (1) high-pitched tone
sounds when the call can be made.