EFJohnson 002-9800-401 manual Talk-Around, Call Guard Squelch

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CONVENTIONAL FEATURES

Talk-Around

Normally, all transmissions go through a repeater. Therefore, if you are out of radio range of the repeater, you cannot talk to anyone, even if you are only a short distance away from the mobile you are calling. To allow communication if this occurs, the talk-around feature can be used to enable direct mobile-to-mobile communication without going through a repeater.

Each selectable group can be programmed for talk-around. It is then automatically selected when the group is selected. There is no special talk-around indicator although the group alpha tag on the lower line of the display may be used to indicate this feature.

Talk-around can also be selected by the TALKARND menu param- eter (see page 33) or T/A option switch. When talk-around is selected by this switch, “TA ON” is flashed on the lower line of the display. Then when it is disabled, “TA OFF” is flashed. Changing the selected system or group, enabling scanning, or turning power off causes talk-around to revert to the default condition programmed for the selected group.

Conventional systems can be programmed so that talk-around cannot be selected. If an attempt is then made to enable talk-around with the switch, “NO TALK” is flashed on the lower line of the display. 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.

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Contents Operating Manual Safety Information Page FCC Exposure Limits FCC Limits for Maximum Permissible Exposure MPEFrequency Whip Model No Base Model No Table of Contents Table of Contents Table of Contents Quick Reference Guide General Features Multi-Net FeaturesLTR Features Conventional FeaturesControls and Display Front Panel ControlsControls and Display Rear Panel Jacks and Connectors Display Description Determining Volume Level Power-Up SequenceGeneral Operation Backlight Operation Numeric Display ModeSystem/Group Display Information Alpha Tag Display Mode Selecting the System and Group Select Mode Indication With Numeric DisplaySelect Mode Indication With Alpha Tag Display Setting Squelch ControlStandard Calls IntroductionPlacing a Standard Call Multi-Net and LTR OperationConventional Operation Receiving a Standard CallTelephone Calls Other Special Calls Placing Telephone CallsBusy and Out-Of-Range Conditions Receiving a Telephone Call Placing Other Multi-Net Special CallsReceiving Other Multi-Net Special Calls Landside-Originate Calls General FeaturesBank Select Call Indicator Emergency SwitchEncryption Indicator EncryptionHome System/Group Select Function FCN SwitchHorn Alert Option Select Power Turn-Off Delay Proceed Clear-To-Talk ToneStealth Mode Time-Out TimerOption Switches and Menu Mode Option SwitchesTone Select Transmitter Thermal FoldbackMenu Mode Introduction Using Menu ModeMenu Mode and Option Switch Functions SwitchSystem and Group Scan System and Group Scan Single and Multiple Site Scan Scan List ProgrammingScan Delay and Continue Timers Transmitting In The Scan Mode MULTI-NET, LTR, Conventional Modes GeneralConventional Operation Monitoring Conventional Channels Before Transmitting Standard and Special Calls MULTI-NET FeaturesBusy Queuing Multi-Net Roaming Auto-Registration Status Select Mode Selected Status Message Transmitting Status MessagesCaller Identification Calls on Priority and Block ID CodesTransmit Inhibit Standard and Telephone Calls LTR FeaturesBusy Queuing LTR System Search TranspondMonitor Mode Conventional FeaturesPriority and Block ID Codes Transmit Disable On Busy Receive-Only GroupsTalk-Around Call Guard SquelchPriority Group Sampling Miscellaneous Supervisory TonesMiscellaneous Multi-Net Telephone Call Tones LTR Telephone Call TonesDisplay Messages Miscellaneous Miscellaneous Menu Mode Messages Bright DIM OFFSpeaking Into Microphone System Operator ProgrammingOperation At Extended Range Transceiver Service Preventing Battery DischargeLicensing Miscellaneous
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