EFJohnson 8500 manual Receive-Only and Talk-Around Channels, Call Guard Squelch

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CONVENTIONAL MODE OPERATION

turned on by quickly releasing and then pressing the push-to-talk switch. If “MON” is indicated in the display as described in the preceding section, the transmitter will turn on even if the channel is busy. When this feature is disabled, the transmitter always keys, even if the channel is busy.

Receive-Only and Talk-Around Channels

Receive-only channels can be programmed in the conventional mode by your system operator to allow monitoring but not transmitting on certain channels. If the push-to-talk switch is pressed with a receive- only channel selected, the intercept tone sounds and “TX DSBL” is displayed.

Talk-around channels (groups) can be programmed by your system operator to allow you to talk directly to another mobile without going through a repeater (both Multi-Net and conventional calls normally go through a repeater). This may permit communication when it would otherwise not be possible such as when you are out of range of the repeaters. This feature is available on conventional systems only.

Call Guard Squelch

The Call Guard Squelch feature eliminates distracting calls 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 you or your group on that channel. Call Guard squelch is a programmable feature available in the conventional mode only. (The Multi-Net mode uses ID codes to eliminate calls intended for others.)

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Contents Series Safety Information Battery Recycling Information Page Quick Reference Guide Page Table of Contents Operation with Optional Remote Control Unit Front Panel Controls ControlsControls Optional Keys for Telephone Calls Front Panel Display Display InformationDisplay Information Receiving a Standard Call Standard CallsIntroduction Placing a Standard CallPlacing a Special Call Special CallsReceiving a Special Call Landside-Originated Calls Additional Phone Mode InformationDialing The Number Intercept Tone Supervisory TonesKey Press Tone Clear-To-Talk ToneConfirmation Tone Proceed Dialing Tone System ScanCall Proceed Tone End Call ToneTransmitting In Scan Scan Resume DelaySystem and Group Lockout Clear-To-Talk Other FeaturesScanning Multi-Net Systems Scanning Conventional SystemsGroup Scan Time-Out TimerRTN Return Key Call IndicatorEmergency Button Transmit Inhibit Keypad DisablePriority Calls High/Low Power Select Key Press Tone DisableGroup Select MULTI-NET and Conventional ModesChannel Monitoring Supervisory TonesTransmit Disable When Busy Conventional Mode OperationMonitoring Before Transmitting Call Guard Squelch Receive-Only and Talk-Around ChannelsOperation with Optional Remote Control Unit Control Unit Controls Miscellaneous Operating Information Operation with Optional Remote Control Unit Sending Status Information Miscellaneous InformationAuto-Registration System Operator Programming Busy QueuingDisplay Messages Setting Volume LevelBattery Pack Rechargeable Battery PackTransceiver Operation At Extended Range Speaking Into MicrophoneFCC Licensing Intrinsically Safe Classification Transceiver ServiceClassification of Atmospheres Class/ Group Classification of Areas DivisionApproved