User`s guide

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Talkback Scan Allows the operator to respond to a call on the same channel as the call
was received during the talkback time in scan.
When the scanner is stopped on a busy channel and the microphone
is removed from the hang-up clip, the radio will remain on the busy
channel and transmit on the busy channel when PTT is pressed.
Talkgroup A group of users in a Type II or Type IIi Trunking system.
Talkgroup Scan A feature that allows users to monitor multiple talkgroups and
conventional channels including talkgroups operating on different
Trunked systems.
Talk Permit Tone A brief programmable series of beeps that provides radio operators
with an indication that a voice channel is available for use and is
assigned to them.
Talk Prohibit Tone An audible tone (honk) heard from the radio's speaker when PTT is
pressed. The tone will be heard when the radio is out of range of the
system or it is programmed with the incorrect system information.
Telephone Interconnect A feature that gives radio users the ability to place and receive
telephone calls through the public telephone network. “Land-line”
telephone users can also communicate with an individual radio or an
entire talkgroup directly from their telephones.
Time-Out Timer (TOT) A feature that automatically shuts off the transmitter after a pre-
determined (programmable) interval. The radio will alert the radio
user with an audible tone before disconnecting. This is designed to
prevent lock-up of a repeater or tie-up of a channel due to inadvertent
keying of the radio’s transmitter. TOT may be customized through
field programming.
Tone Private-Line Squelch See “TPL”.
Transmit Deviation Alignment An electronic method of adjusting the modulation of the transmitter
to a constant value across the operating frequency range.
Transmit Frequency The center of the transmit channel (usually represented in MHz).
Transmit Power Alignment An electronic method of adjusting the power output of the transmitter
to a constant value across the operating frequency range.
Transpond Tone The Transpond Tone is used as an acknowledgment. This tone is
typically not decoded by the console but is heard by the dispatcher
through the loudspeaker.
Trunking The automatic sharing of a communications paths or paths between a
large number of users.
Type I A type of Trunking that is composed of Fleets and Subfleets and is
limited by the size of codes of those groups. A Type I system
handshaking includes sending of the Acknowledge Tone and High
Speed Handshake.
Type II A type of Trunking system that is composed of Announcement Groups
and Talkgroups. A Type II system is limited on Talkgroups and
Individual ID combinations to 48,000 IDs and 4,000 Talkgroups per