EFJohnson High Tier, LTR 98xx manual Monitoring Conventional Channels Before Transmitting

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LTR AND CONVENTIONAL MODES

To properly receive calls in the conventional mode, the squelch

control must be set as described in page 18. If this control is not set prop- erly, weak messages could be missed or noise could be heard when no message is present. In the LTR mode, the squelch level is fixed and setting this control has no affect.

Monitoring Conventional Channels Before Transmitting

Regulations require that the channel be monitored before transmit- ting to make sure that it is not being used by someone else. If you were to transmit when someone else is talking, you would probably disrupt their conversation. As previously stated, monitoring is performed automati- cally in the LTR mode. In the conventional mode, it must be performed automatically or manually as follows.

Automatic Channel Monitoring

If the selected group is programmed for the Transmit Disable On Busy feature, monitoring is performed automatically. Refer to page 44 for more information on this feature.

Manual Channel Monitoring

If the Transmit Disable On Busy feature is not used, monitoring must be performed manually as follows:

Busy Indicator - With scanning disabled and the squelch control adjusted as described on page 18, note if the indicator on the front panel is green. If it is, a signal has been detected on the selected system (channel) and you should not transmit a message until it turns off.

Monitor Mode - There may be times when the busy indication is on even though no one is using the channel. Monitoring should then be performed using the monitor mode. This mode is enabled by taking the microphone off-hook (unless off-hook detection has been disabled by programming). The monitor mode temporarily disables Call Guard squelch (see descrip- tion on page 46) and scanning so that all messages on the channel are

heard. The monitor mode is indicated by in the display as shown in the

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Contents High Tier Operating Manual Page Page Safety Information Limits For General Population/Uncontrolled Exposure FCC Exposure LimitsFrequency Whip Model No Base Model No Table of Contents Table of Contents Quick Reference Guide General Features FeaturesFront Panel Controls Controls and DisplayMicrophone Push-To-Talk PTT Switch Not Shown Push-button on Rear Panel Jacks and Connectors Display Description Power-Up Sequence Determining Volume LevelGeneral Operation System/Group Display Information Numeric Display ModeAlpha Tag Display Mode Backlight OperationSelect Mode Indication With Numeric Display Select Mode Indication With Alpha Tag DisplaySelecting the System and Group Setting Squelch Control LTR Operation Standard CallsIntroduction Placing a Standard CallReceiving a Standard Call Conventional OperationPlacing Telephone Calls Telephone CallsReceiving a Telephone Call General Features Landside-Originate CallsBank Select Call Indicator Emergency SwitchEncryption Function FCN Switch Encryption IndicatorHorn Alert Home System/Group SelectOption Select Power Turn-Off DelayProceed Clear-To-Talk Tone Stealth Mode Time-Out TimerReceive-Only Groups Transmitter Thermal Foldback Option Switches and Menu ModeOption Switches Tone SelectSwitch Menu Mode and Option Switch FunctionsUsing Menu Mode Menu Mode IntroductionSystem and Group Scan System and Group Scan Scan List Programming Transmitting In The Scan Mode Scan Delay and Continue TimersSystem and Group Scan General LTR and Conventional ModesMonitoring Conventional Channels Before Transmitting LTR Features Standard and Telephone CallsCalls on Priority and Block ID Codes Transmit Inhibit System Search Busy QueuingTranspond Conventional Features Monitor ModeTransmit Disable On Busy Talk-Around Priority Group Sampling Call Guard SquelchSupervisory Tones MiscellaneousMiscellaneous LTR Telephone Call Tones Display Messages Miscellaneous Bright DIM OFF Menu Mode MessagesSpeaking Into Microphone System Operator ProgrammingPreventing Battery Discharge Operation At Extended RangeLicensing Transceiver Service
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