EFJohnson 8500 Portable Radio User Manual


 
CONVENTIONAL MODE OPERATION
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turned on by quickly releasing and then pressing the push-to-talk switch.
If “MON” is indicated in the display as described in the preceding
section, the transmitter will turn on even if the channel is busy. When this
feature is disabled, the transmitter always keys, even if the channel is
busy.
Receive-Only and Talk-Around Channels
Receive-only channels can be programmed in the conventional
mode by your system operator to allow monitoring but not transmitting
on certain channels. If the push-to-talk switch is pressed with a receive-
only channel selected, the intercept tone sounds and “TX DSBL” is
displayed.
Talk-around channels (groups) can be programmed by your system
operator to allow you to talk directly to another mobile without going
through a repeater (both Multi-Net and conventional calls normally go
through a repeater). This may permit communication when it would
otherwise not be possible such as when you are out of range of the
repeaters. This feature is available on conventional systems only.
Call Guard Squelch
The Call Guard Squelch feature eliminates distracting calls intended
for others using the channel. This is done by using a subaudible tone or
digital code to control the squelch. This tone or code is unique to you or
your group on that channel. Call Guard squelch is a programmable
feature available in the conventional mode only. (The Multi-Net mode
uses ID codes to eliminate calls intended for others.)