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

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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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Contents High Tier Operating Manual Page Page Safety Information FCC Exposure Limits Limits For General Population/Uncontrolled ExposureFrequency Whip Model No Base Model No Table of Contents Table of Contents Quick Reference Guide Features General FeaturesControls and Display Front Panel ControlsMicrophone Push-To-Talk PTT Switch Not Shown Push-button on Rear Panel Jacks and Connectors Display Description General Operation Power-Up SequenceDetermining Volume Level Numeric Display Mode Alpha Tag Display ModeBacklight Operation System/Group Display InformationSelecting the System and Group Select Mode Indication With Numeric DisplaySelect Mode Indication With Alpha Tag Display Setting Squelch Control Standard Calls IntroductionPlacing a Standard Call LTR OperationConventional Operation Receiving a Standard CallTelephone Calls Placing Telephone CallsReceiving a Telephone Call Bank Select General FeaturesLandside-Originate Calls Encryption Call IndicatorEmergency Switch Encryption Indicator Function FCN SwitchHome System/Group Select Horn AlertPower Turn-Off Delay Option SelectProceed Clear-To-Talk Tone Receive-Only Groups Stealth ModeTime-Out Timer Option Switches and Menu Mode Option SwitchesTone Select Transmitter Thermal FoldbackMenu Mode and Option Switch Functions SwitchMenu Mode Introduction Using Menu ModeSystem and Group Scan System and Group Scan Scan List Programming Scan Delay and Continue Timers Transmitting In The Scan ModeSystem and Group Scan LTR and Conventional Modes GeneralMonitoring Conventional Channels Before Transmitting Calls on Priority and Block ID Codes LTR FeaturesStandard and Telephone Calls Transmit Inhibit Busy Queuing System SearchTranspond Transmit Disable On Busy Conventional FeaturesMonitor Mode Talk-Around Call Guard Squelch Priority Group SamplingMiscellaneous Supervisory TonesMiscellaneous LTR Telephone Call Tones Display Messages Miscellaneous Menu Mode Messages Bright DIM OFFSystem Operator Programming Speaking Into MicrophoneLicensing Preventing Battery DischargeOperation At Extended Range Transceiver Service
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