EFJohnson 002-9800-401 manual Transmit Disable On Busy, Receive-Only Groups

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CONVENTIONAL FEATURES

A CG (Call Guard disable) option switch may also be programmed. This switch disables both receive and transmit squelch control on the selected group only (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 and momentarily display “CG ON”, press the CG switch again, 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 42 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 pressed. When the transmitter is disabled by this feature, the busy tone sounds briefly and “DSBL BSY” is indicated on the lower line of the display. The monitor mode (see preceding section) is enabled while the PTT switch is pressed so that activity on the channel can be monitored. However, it is not possible to access a channel by holding down the PTT switch (it must be released to make another attempt).

Occasionally, a busy condition may be detected even though no one is talking. To key the transmitter in this case, release the PTT switch and then immediately press it again. There is also a programmable option with this feature to allow transmitting with a busy channel if the correct Call Guard signal is detected. The Transmit Disable On Busy feature is enabled or disabled on each conventional group by dealer programming.

Receive-Only Groups

Conventional groups can be programmed for monitoring only (trans- mitting is disabled). If the PTT switch is pressed with one of these groups selected, the intercept tone sounds and “TX DSBL” is displayed.

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Contents Operating Manual Safety Information Page FCC Limits for Maximum Permissible Exposure MPE FCC Exposure LimitsFrequency Whip Model No Base Model No Table of Contents Table of Contents Table of Contents Quick Reference Guide Conventional Features General FeaturesMulti-Net Features LTR FeaturesFront Panel Controls Controls and DisplayControls and Display Rear Panel Jacks and Connectors Display Description Power-Up Sequence Determining Volume LevelGeneral Operation Numeric Display Mode Backlight OperationSystem/Group Display Information Select Mode Indication With Numeric Display Alpha Tag Display Mode Selecting the System and GroupSetting Squelch Control Select Mode Indication With Alpha Tag DisplayMulti-Net and LTR Operation Standard CallsIntroduction Placing a Standard CallReceiving a Standard Call Conventional OperationPlacing Telephone Calls Telephone Calls Other Special CallsBusy and Out-Of-Range Conditions Placing Other Multi-Net Special Calls Receiving a Telephone CallReceiving Other Multi-Net Special Calls General Features Landside-Originate CallsBank Select Emergency Switch Call IndicatorEncryption Encryption IndicatorFunction FCN Switch Home System/Group SelectHorn Alert Option Select Proceed Clear-To-Talk Tone Power Turn-Off DelayTime-Out Timer Stealth ModeTransmitter Thermal Foldback Option Switches and Menu ModeOption Switches Tone SelectUsing Menu Mode Menu Mode IntroductionSwitch Menu Mode and Option Switch FunctionsSystem and Group Scan System and Group Scan Scan List Programming Single and Multiple Site ScanScan Delay and Continue Timers Transmitting In The Scan Mode General MULTI-NET, LTR, Conventional ModesConventional Operation Monitoring Conventional Channels Before Transmitting MULTI-NET Features Standard and Special CallsBusy Queuing Multi-Net Roaming Auto-Registration Transmitting Status Messages Status Select Mode Selected Status MessageCalls on Priority and Block ID Codes Caller IdentificationTransmit Inhibit LTR Features Standard and Telephone CallsBusy Queuing LTR Transpond System SearchConventional Features Monitor ModePriority and Block ID Codes Receive-Only Groups Transmit Disable On BusyCall Guard Squelch Talk-AroundPriority Group Sampling Supervisory Tones MiscellaneousMiscellaneous LTR Telephone Call Tones Multi-Net Telephone Call TonesDisplay Messages Miscellaneous Miscellaneous Bright DIM OFF Menu Mode MessagesSystem Operator Programming Speaking Into MicrophoneOperation At Extended Range Preventing Battery Discharge Transceiver ServiceLicensing Miscellaneous