Operator's Manual

18
Channel Guard
Channel Guard is a method of reducing "channel chatter" by equipping
receivers with tone-responsive devices, which only allow calls with the
correct sub-audible tones to be heard by the user. Channel Guard options
and parameters are defined in the radio personality.
The radio can be programmed on a per-channel basis to encode and/or
decode Channel Guard tones. Squelch Tail Elimination (STE) can be
enabled or disabled on a channel programmed with a Channel Guard tone.
Channel Guard Monitor Function
The radio can be programmed, on a per-channel basis to transmit with or
without Channel Guard tones. STE can optionally be enabled on a per-
channel basis.
Ensure there is no activity on the channel by:
• checking the TX/RX LED.
• pressing and holding the Monitor/Clear button. Squelch noise will be
heard if the channel is clear of traffic.
Digital Channel Guard
Digital Channel Guard performs similar to Channel Guard except sub-audible
codewords are decoded and/or encoded. STE is standard with Digital
Channel Guard operation.