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FUNCTION- CTCSS & DCS
WHAT IS CTCSS AND DCS?
CTCSS (Continuous Tone-Coded Squelch System) and DCS (Digitally Coded Squelch) modify
the transmission signal to allow multiple users to share the same channel without disturbing each
other. This is an important feature on a radio when there are many radio users in the same area.
CTCSS continuously superimposes any one of about 50 low-pitch audio tones on the transmitted
signal, ranging from 67 to 254 Hz.
DCS was designed as the digital replacement for CTCSS. DCS adds a 134.4 bps (sub-audible)
bit stream to the transmitted audio
CTCSS or DCS is enabled by on the radio through selectable sub channels. When CTCSS or
DCS is enabled, incoming signals must be on the same CTCSS or DCS sub channel as the receiving
radio or they will be ltered out.
NOTE: The CTCSS and DCS Tone Charts can be found on page 10 of this instruction manual.
FUNCTION- Dual Channel Monitor (DCM)
WHAT IS DUAL CHANNEL MONITOR (DCM)?
Generally on a UHF only one channel can be monitored at a time (unless the radio is in scan mode).
Dual channel monitor allows two channels to be monitored simultaneously.
FUNCTION- Button Beep
WHAT IS BUTTON BEEP?
When buttons are pressed on the radio (exc. PTT Button), the radio emits a beep tone to indicate
the button has been pressed. The radio has button beep default on.
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