EFJohnson LTR 98xx, High Tier manual Call Guard Squelch, Priority Group Sampling

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CONVENTIONAL FEATURES

Groups may also be programmed so that talk-around cannot be turned off. If the option switch is then pressed, neither “TA OFF” nor “TA ON” is displayed. If the menu mode is used in these cases, the current mode cannot be changed.

Call Guard Squelch

The Call Guard squelch feature eliminates distracting messages 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 a user or a group on that channel. It is transmitted with the voice signal but is not heard because it is in the subaudible range and attenuated by a filter. Call Guard squelch can be programmed on each conventional group. LTR operation uses ID codes to perform a similar function.

Priority Group Sampling

The priority group sampling feature ensures that messages on priority conventional groups are not missed while listening to a message on a non-priority conventional group. A fixed first and second priority group can be designated by programming or either priority group can be

the selected group. When a first priority group is selected, is

displayed, and when a second priority group is selected, is displayed (see following illustration). When scanning, this symbol is displayed only while a call is being received on the particular priority group.

When a message is detected on a first priority group while listening to a non-priority message, a tone sounds, “PRIORTY1” is flashed on the lower line of the display, and the transceiver changes to that system/group to receive the message. Likewise, if a message is received on a second priority group, “PRIORTY2” is displayed. When the priority message 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 Determining Volume Level Power-Up SequenceGeneral Operation Backlight Operation Numeric Display ModeAlpha Tag Display Mode System/Group Display InformationSelect Mode Indication With Alpha Tag Display Select Mode Indication With Numeric DisplaySelecting the System and Group Setting Squelch Control Placing a Standard Call Standard CallsIntroduction LTR OperationConventional Operation Receiving a Standard CallTelephone Calls Placing Telephone CallsReceiving a Telephone Call Landside-Originate Calls General FeaturesBank Select Emergency Switch Call IndicatorEncryption Encryption Indicator Function FCN SwitchHome System/Group Select Horn AlertPower Turn-Off Delay Option SelectProceed Clear-To-Talk Tone Time-Out Timer Stealth ModeReceive-Only Groups Tone Select Option Switches and Menu ModeOption Switches 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 Standard and Telephone Calls LTR FeaturesCalls on Priority and Block ID Codes Transmit Inhibit Busy Queuing System SearchTranspond Monitor Mode Conventional FeaturesTransmit Disable On Busy 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 MicrophoneOperation At Extended Range Preventing Battery DischargeLicensing Transceiver Service