Radio Shack PRO-92 owner manual FM Mode, LTR E. F. Johnson Mode

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FM Mode

This sets the scanner to receive transmissions using fre- quency modulation (FM). FM is used for most public safety transmissions, as well as broadcast, business, and amateur radio transmissions. When the scanner re- ceives a transmission on a channel set to the FM mode, it always stops on the transmission.

LTR (E. F. Johnson) Mode

You can set your scanner so it decodes the talk group IDs used with LTR systems. This setting is called the LTR mode.

LTR systems are trunking systems used primarily by business or private communications service providers, such as taxicabs, delivery trucks, and repair services. These systems encode all trunking information as digital subaudible data that accompanies each transmission. Users on an LTR system are assigned to specific talk groups, which are identified by the radio as six-digit numbers. These numbers are in the form AHHUUU, where:

A = Area code (0 or 1)

H = Home repeater (01 through 20)

U = User ID (000 through 254)

When the scanner receives a transmission on a channel set to the LTR mode, it first decodes the LTR data in- cluded with the transmission. In the open mode, the scanner stops on the transmission and displays the talk group ID on the bottom line of the display. In the closed mode, the scanner only stops on the transmission if the LTR data matches a talk group ID that you have stored in the bank’s talk group ID list and have not locked out.

LTR systems are frequently programmed so that each radio has a unique ID code.

26	About Your Scanner

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Contents PRO-92 Handheld Scanner Contents Special Features OperationTrunking Operation TroubleshootingCare Specifications General Guide to ScanningFeatures Scanner scans Features FCC Notice Scanning LegallyPower Sources PreparationUsing Batteries Preparation11 Charging Rechargeable Batteries Replace the coverUsing AC Power Using Vehicle Power PWR DC 9V jackConnecting the Antenna Connecting an Optional AntennaConnecting AN EARPHONE/ Headphones Listening SafelyTraffic Safety Connecting AN Extension SpeakerUsing the Belt Clip Connecting the Clone Cable About Your ScannerLook AT the Keypad About Your Scanner Look AT the Display Channel Storage Banks 7 are turned off Search ModeUnderstanding Banks PL Codes Understanding CTCSS/DCSSearch Banks DPL CodesUnderstanding Your SCANNER’S Modes Open and Closed ModesAM Mode FM Mode LTR E. F. Johnson ModeMotorola Mode Edacs Mode Turning on the Scanner and Setting Squelch OperationStoring Known Frequencies Into Channels Bank Channel ManualStoring Text Tags Assigning a Text Tag to a ChannelAssigning a Text Tag to a Bank Text Input Chart Press To Enter a Character from this GroupPress Finding and Storing Active FrequenciesSearching a Preprogrammed Frequency Range Func 9 w x y zCurrent Search Bank Func then Tune Storing a Frequency While Searching for a Specified ChannelChanging a Search Range with a Preprogrammed Range Scanning the Channels Manually Changing a Search RangeManually Tuning a Frequency Turning Channel-Storage Banks Off and OnListening to a Weather Channel Deleting Frequencies from ChannelsListening to the Weather Band Displaying Weather MessagesSpecial Features Using the Delay FunctionReviewing the Lock-Out Channels Locking OUT Channels or FrequenciesLocking Out Channels Locking Out FrequenciesClearing All Lock Out Frequencies in a Search Bank Reviewing Locked-Out FrequenciesClearing a Locked-Out Frequency Locked-outPriority Special Features Display Description Changing the Receive ModeChanging the Frequency Step Using the Attenuator Range MHz Search Step kHzTurning the KEY Tone on and OFF Using the Display BacklightUsing the Keylock Changing the Display ContrastTrunking Operation Cloning the Programmed Data from Scanner to ScannerUnderstanding Trunking Setting Squelch for the Trunking Mode Programming Trunking FrequenciesProgramming Motorola Trunking Systems UHF-Lo Offset Frequency Programming Fleet Maps Size CodeTalk Group IDS Storing Talk Group IDs Talk Group ID HoldClearing Talk Group IDs Locking Out Talk Group IDsReviewing Locked-Out Talk Group IDs Clearing All Talk Group IDs in One BankClosed Mode Open and Closed ModesGeneral Guide to Scanning Changing the Open/Closed ModeMode Open Closed Ham Radio Frequencies Guide to FrequenciesUS Weather Frequencies Birdie FrequenciesGeneral Guide to Scanning Primary Usage Guide to the Action BandsTypical Band Usage VHF BandAbbreviations Services Band AllocationMeter Amateur Band- 50-54 MHz Meter Amateur BandVHF Low Band- 29-50 MHz in 5 kHz steps Aircraft Band- 108-137 MHzLow Band 450-470 MHz Government Band 406-420 MHzCm Amateur Band 420-450 MHz Frequency Conversion Squelch is not TroubleshootingProblem Possible Cause Remedy DC 9V jack RESETTING/INITIALIZING the ScannerResetting the Scanner Initializing the Scanner ResetCare Specifications UHF T9V DC Specifications71 Limited One-Year Warranty

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