EFJohnson 7243 LTR-Net Portable UHF manual Monitoring Before Transmitting

Page 48

CONVENTIONAL FEATURES

3.Press the key until receiver noise is heard and then press until the noise just mutes. To decrease or increase the selected level in steps of 10 (or select the minimum or maximum level if this is not possible), press FCN or FCN , respectively.

NOTE: Slight readjustment may be required if weak messages are not heard or unsquelching occurs when no messages are present.

4.To exit this mode, press the FCN SQL again. Exiting also occurs auto- matically after 2 seconds of no activity.

5.If both narrow and wide band channels are used, perform this adjust- ment for each type because separate settings are maintained.

Monitoring Before Transmitting

General

Regulations require that conventional channels (groups) be moni- tored before transmitting to make sure that they are not being used by someone else. If you were to transmit when someone else is talking, you would probably disrupt their conversation. Proceed as follows to auto- matically or manually monitor conventional channels. In the LTR-Net and LTR modes, monitoring is always performed automatically.

Automatic Channel Monitoring

If the selected group is programmed with the Transmit Disable On Busy feature (see page 50), monitoring is performed automatically. If not, it must be monitored manually using one of the methods which follow.

Busy Indicator

With scanning disabled and the squelch properly adjusted (see page 48), note if “BUSY” is indicated in the display (see following illus- tration). If it is, a signal is being detected on the selected group (channel) and you should not transmit a message until it turns off.

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Contents Operating Manual Page Safety Training Information Electromagnetic Interference/Usage Compatibility Table of Contents Table of Contents Table of Contents Quick Reference Guide BusyFeatures General FeaturesControls and Display Top Panel ControlsSide Controls Busy UID DisplayControls and Display Front Panel Keys FCN ScanSYS RCL Dial Standard Mode A/D Standard Mode SYS Power-Up Sequence Setting Volume LevelsSystem/Group Display Mode Basic OperationNumeric Display Mode System and Group SelectKeypad Disable Transceiver LockLow Battery Indication Option SwitchesLTR-Net, LTR, and Conventional Operation Basic Operation General Features Call IndicatorBank Select Home System/Group Select Proceed Clear-To-Talk ToneReceive-Only Groups Time-Out Timer Standard Group CallsTone Select GeneralPlacing a Standard Group Call LTR-Net and LTR OperationConventional Operation Receiving a Standard Group CallTelephone Calls Placing Telephone CallsReceiving a Telephone Call LTR-NET Auxiliary Calls Landside-Originate Telephone CallsPlacing LTR-Net Auxiliary Calls Receiving Auxiliary Calls Option Switches and Menu Mode Menu Mode and Option Switch FunctionsMenu Mode IntroductionMenu Mode Flowchart Dial Mode Selecting Dial ModeIntroduction Dialing a Number Sending the NumberStoring Numbers in Memory Exiting Dial Mode Placing Calls Without Selecting Dial ModeRecalling Numbers From Memory System and Group Scanning System and Group Scanning Scan List Programming Transmitting In The Scan Mode Scan Delay and Continue TimersSystem and Group Scanning LTR-NET and LTR Features Transmit InhibitPriority Calls LTR-NET Features LTR-Net Standard CallsLTR-Net Special Calls Busy QueuingRoaming LTR Features Conventional FeaturesSquelch Adjust Standard Group CallsMonitoring Before Transmitting Monitor Mode Selected Transmit Disable On BusyTalk-Around Call Guard SquelchMiscellaneous Supervisory TonesLTR-Net Special Call Tones LTR Telephone Call Tones Display MessagesMiscellaneous Menu Mode Messages Bank SEL Bank selectRechargeable Battery Pack Alpha NumericMiscellaneous Battery Charger Operation Charger Indicators Speaking Into MicrophoneOperation At Extended Range Transceiver Service IndexLicensing Busy 14 Call 13 Index 002-7200-600