C-5000 Pilot’s Guide
Publication No. 150-041103 Page 36 of 51
Rev. C C-5000 Pilot’s Guide
Nov 2013
PL – Acronym for “Private Line”. Also known as CTCSS or sub-audible tone.
Preset Channel – A channel that has been programmed into the memory of a control head or
transceiver.
Private – Another name for encryption.
Repeat – This mode of operation uses a ground or air based repeater to retransmit your signal to another
radio. Transmit and receive frequencies are different.
RP - Acronym for “Remote Programmer”. Wulfsberg’s software to program the C-5000 with channel
information via a connector of the front of the C-5000 is called the RP Software. It is recommended
that this method is used whenever possible to program the C-5000 memory. While front panel
programming is available for emergencies, using the RP software is less prone to operator errors
and automatically provides for memory backup in case on control head failure.
RSS – Acronym for “Radio Service Software”. A PC application used for configuring, uploading, and
downloading information into the RT-5000’s Internal Transceiver Modules.
RT System – Another way of saying Receiver/Transmitter System. Most often, the term refers to a single
transceiver. However, because the Flexcomm I transceivers can be ganged together and
controlled as one radio, it can refer to more than one transceiver. The C-5000 can control up to two
RT systems.
RX – Abbreviation for “Receive”
Shadow Key – Special encryption key used to encrypt the keys received during the OTAR process.
Squelch level – Signal level at which the radio will detect a strong enough signal has been detected by
the radio and audio is allowed to go to the user.
Transceiver – A radio containing both a transmitter and a receiver, co-located in one box.
Trunking – A term used to describe a communication system that automatically assigns an available
channel to the operator. This type of system can improve channel use to the point that more
conversations are going on than channels available. There are many different Trunking systems
available. Most are proprietary to each manufacturer. In other words, system built by different
radio manufacturers will NOT communicate with each other. Only the P25 Trunking standard
guarantees interoperability.
TX – Abbreviation for “Transmit”.
Volume – Loudness of a voice signal.
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