EFJohnson 002-9803-601, 98x3, 98x6 manual Miscellaneous, Call Guard Squelch, Supervisory Tones

Page 47

MISCELLANEOUS

Talk-around is then automatically selected when one of these groups is selected. There is no special talk-around option switch or indicator. However, the group alpha tag on the lower line of the display may be used to indicate groups programmed for this feature. Talk-around is not available on LTR-Net and LTR systems.

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-Net and LTR opera- tion uses ID codes to perform a similar function.

MISCELLANEOUS

Supervisory Tones

The following tones are heard at various times when operating this transceiver. Some or all of these tones can be disabled by the TONES menu parameter or programming. Refer to “Tone Select” on page 26 for more information.

Busy Tone

This tone is similar to the standard telephone busy tone, and it indicates that the radio system is currently busy. The display also indicates “BUSY” while this tone is sounding. Repeated access attempts are made while the PTT switch pressed with this tone sounding. Therefore, it is not necessary to release the PTT switch to access the system. This tone sounds only with LTR-Net and LTR calls.

47

Image 47

Contents LTR-Net 9800 Series Page Page Safety Information FCC Exposure Limits Frequency 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 Rear Panel Jacks and Connectors Display Description General Operation Power-Up SequenceDetermining Volume Level System/Group Display Modes Numeric Display ModeAlpha Display Mode Backlight OperationSelecting the System and Group Select Mode Indication With Numeric DisplaySelect Mode Indication With Alpha Tag Display Microphone Off-Hook Detect Setting Squelch ControlIntroduction LTR-Net, LTR, and Conventional OperationBank Select General FeaturesEncryption Call IndicatorEmergency Switch Home System/Group Select Function FCN SwitchHorn Alert Horn Alert EnabledOption Select Power Turn-Off DelayReceive-Only Groups Proceed Clear-To-Talk ToneTone Select Stealth ModeTime-Out Timer Placing a Standard Group Call Standard Group CallsTransmitter Thermal Foldback GeneralConventional Operation LTR-Net and LTR OperationPlacing Telephone Calls Telephone CallsReceiving a Standard Group Call Receiving a Telephone Call Landside-Originate Telephone Calls LTR-NET Auxiliary CallsReceiving Auxiliary Calls Placing LTR-Net Auxiliary CallsMenu Mode Introduction Option Switches Menu ModeOption Switches Switch Menu Mode and Option Switch FunctionsSystem and Group Scanning Using Menu ModeSystem and Group Scanning System and Group Scanning Scan List Programming Scan Delay and Continue Timers Transmitting In The Scan ModeTransmit Inhibit LTR-NET and LTR FeaturesTelephone Group Select Calls on Priority ID CodesBusy Queuing LTR-NET FeaturesLTR-Net Standard and Special Calls Roaming Telephone Calls LTR FeaturesConventional Features Standard Group CallsMonitor Mode Selected Talk-Around Transmit Disable On BusySupervisory Tones MiscellaneousCall Guard Squelch Miscellaneous LTR Telephone Call Tones LTR-Net Special Call TonesDisplay Messages Miscellaneous Bright DIM OFF Menu Mode MessagesSpeaking Into Microphone System Operator ProgrammingLicensing Preventing Battery DischargeOperation At Extended Range Transceiver Service Miscellaneous