122 Glossary
RF
Radio Frequency, the part of the
electromagnetic spectrum that is suitable for
radio transmissions. The frequency of the RF
signal is described in terms of the number of
cycles per second or Hertz (Hz).
RSSI
Received Signal Strength Indicator, a symbol
or number that shows the strength of a
received signal.
T
traffic channel
The traffic channel is the channel on a
trunking system to which the parties
participating in a call are directed to for the
duration of the call. When the call ends, the
traffic channel is returned to the pool of
channels for use in a new call.
trunking
operation
In trunking operation, the trunking system
manages the communications channels
used by the radio, and shares a number of
channels among a large number of radio
users.
V
valid signal
A valid signal is a signal that the radio
responds to by unmuting the receiver.
A signal may be valid, for example, when it is
stronger than a minimum level or has special
signaling that matches the signaling
programmed for the receiving radio.
Summary of Contents for TM9456
Page 1: ...TM9456 Dual Radio User s Guide MAU 03301 01 01 Issue 1 July 2016 ...
Page 2: ......
Page 55: ...Hearing faint and noisy signals 55 ...
Page 61: ...Dual radio operation 61 ...
Page 128: ...128 zones about 34 selecting 34 ...
