EFJohnson LTR 98xx, High Tier manual Conventional Features, Monitor Mode, Transmit Disable On Busy

CONVENTIONAL FEATURES

CONVENTIONAL FEATURES

Monitor Mode

The monitor mode is used to monitor a channel before transmitting. When this mode is selected, it temporarily disables Call Guard squelch or other squelch control techniques and also scanning so that all messages occurring on the selected group (channel) are heard. The monitor mode is enabled by taking the microphone off-hook (unless off-hook detection is disabled by programming) or pressing the MON option switch. The

monitor mode is indicated by in the display.

A conventional system must be selected to enable monitoring. If the microphone is taken off-hook with an LTR system selected, scanning halts (unless off-hook detection is disabled) but monitoring is not selected. The MON option switch is not detected when scanning is enabled, and if it is pressed with an LTR system selected, NOT CONV is displayed and monitoring is not selected. This switch must be pressed again to disable the monitor mode.

A CG (Call Guard disable) option switch may also be programmed. This switch disables both receive and transmit squelch control on the selected group (the monitor mode disables only receive squelch control). When squelch control is disabled by the CG switch, “CG OFF” is momentarily displayed. To re-enable squelch control, press the CG switch again, (“CG ON” is displayed), select another system/group, or cycle transceiver power.

If the Transmit Disable On Busy feature is used (see description which follows), monitoring is performed automatically and the monitor mode may not need to be used. Refer to “Monitoring Conventional Chan- nels Before Transmitting” on page 39 for more information.

Transmit Disable On Busy

The Transmit Disable On Busy feature automatically disables the transmitter if the selected group (channel) is busy when the PTT switch is

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