the particular special call must first be
selected using the SYSTEM/ GROUP/
CHANNEL knob.The special call is then
initiated by pressing the OPTION button
and then the PTT button.
CLEAR/
MONITOR
BUTTON
The CLEAR/MONITOR BUTTON serves
several purposes depending on the
operating mode.
In the trunked mode, the CLEAR/MONI-
TOR BUTTON exits the current operation
and removes all displays associated with it.
The radio and display then return to the
group receive state. In conventional mode,
pressing this button unmutes the receiver
so activity on the selected channel can be
monitored. When pressed and held for
approximately 3 seconds, this button
toggles conventional channel decod-
ing/encoding (Channel Guard, Digital
Channel Guard, T99) on and off, if
programmed, for the selected channel.
PUSH-TO-
TALK
BUTTON
Pressing this button enables the radio’s
(PTT) transmitter. Releasing PTT returns
the radio to the receive mode.
19
Summary of Contents for EDACS M-RK I
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