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Base Station Identifier (BSI) An identifier which is programmed into the Central Controller and
sent out in Morse code ID on the lowest frequency Trunked repeater.
Blank Frequency A channel that is not assigned a transmit frequency.
Blank PL Code A channel that is not assigned a receive or transmit PL code.
Busy Channel Lockout (BCL) A feature on Conventional modes that gives “listening privacy”. The
radio will not key when there is a carrier on channel unless it is the
user’s PL/DPL group. Instead, the user will hear a busy tone while PTT
is held. In addition, the user will not be allowed to monitor the
channel. If all the users who share the channel have BCL enabled, they
have privacy similar to that provided by a Trunked radio system.
Call Alert (CA) A Stat-Alert signalling feature that is similar to a tone-only or a tone-
and-voice pager. The “page” can leave a persisting indication on the
target radio. A Call Alert stops the channel scan until the alert is
cleared.
Call Light A visual indicator that flashes when transmission is received.
Call List A list of IDs from one or more signalling formats that is used to send a
message to individual groups.
Carrier A term that represents any channel activity.
Carrier Squelch A radio receive mode of operation that uses receiver squelch as the
only method of muting the speaker.
Channel A single path, separated by frequency or time divisions, for
transmitting electrical signals. A receive (one-way) or receive-and-
transmit (two-way) frequency path.
Cloning An RSS function which allows quick duplication programming of a
radio’s codeplug data to many radios. Electronic tuning/alignment
information is the only data not copied.
Cloning Cable A radio-to-radio connector cable used to program one radio’s
personality into another radio.
Codeplug The contents of the radio’s EEPROM that determine the radio’s
personality. This personality information consists of system ID, Unit
ID and Fleet/Subfleet/Talkgroup information, as well as the control
channel information. The codeplug contains all the features and
options stored in the codeplug.
COMport The logical name of the serial port available on personal computers.
They may be COM1, COM2, COM3 or COM4.
Communications Port See “COMport”.
Connect Tone A tone generated by the radio over the voice channel to the Trunked
Repeater. Connect tone is used as a signal to the Central Controller
that a specific voice channel has been assigned. There are eight
different connect tones available: 76.60 Hz, 83.72 Hz, 90.00 Hz, 105.88
Hz, 116.13 Hz, 128.57 Hz and 138.46 Hz.
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