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

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20-522.fm Page 31 Friday, September 17, 1999 12:46 PM

LTR (E. F. Johnson) Mode

This sets the scanner to decode the talk group ID’s used with an LTR system. This is a trunking system used pri- marily by business or private communications service providers, such as taxi cabs, delivery trucks, and repair services. LTR systems encode all trunking information as digital subaudible data that accompanies each transmis- sion. Users on an LTR system are assigned to specific talk groups, which are identified by the radio as a six-digit number. The number is 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 includ- ed 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 ra- dio has a unique ID code.

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Contents PRO-92 500-Channel Portable Trunking Scanner Features Your scanner includes these special features Fm Page 4 Friday, September 17, 1999 1246 PM FCC Notice Pager transmissions Scrambled or encrypted transmissions Scanning LegallyContents Special Features Troubleshooting Using Batteries Power SourcesPreparation Fm Page 11 Friday, September 17, 1999 1246 PM Fm Page 12 Friday, September 17, 1999 1246 PM Charging Rechargeable Batteries Using AC Power PWR DC 9V jack Using Vehicle PowerConnecting the Antenna Connecting an Optional Antenna Connecting AN EARPHONE/ HeadphonesTraffic Safety Connecting AN Extension SpeakerListening Safely Connecting the Clone Cable Using the Belt ClipLook AT the Keypad About Your ScannerFm Page 21 Friday, September 17, 1999 1246 PM Fm Page 22 Friday, September 17, 1999 1246 PM Look AT the Display Motorola Low Freq Hi Freq Step Description MHz KHz Understanding BanksChannel Storage Banks Search BanksGMRS/FRS Fm Page 27 Friday, September 17, 1999 1246 PM Understanding Your PRO-92’S Modes Coded Squelch Modes PL, DPL, and Trunking AM ModeFM Mode PL ModeDPL Mode Ahhuuu LTR E. F. Johnson ModeMotorola Mode Edacs Mode Fm Page 34 Friday, September 17, 1999 1246 PM Operation Turning on the Scanner and Setting SquelchBank Channel Manual Storing Known Frequencies Into ChannelsAssigning a Text Tag to a Channel Storing Text TagsAssigning a Text Tag to a Bank Press Text Input ChartPress To Enter a Character from this Group Finding and Storing Active FrequenciesSearch Bank Search Range MHz Description Searching a Preprogrammed Frequency RangeCurrent Search Bank Storing a Frequency While Searching for a Specified Channel Manually Changing a Search Range Turning Channel-Storage Banks Off and On Scanning the ChannelsManually Tuning a Frequency Listening to the Weather Band Deleting Frequencies from ChannelsListening to a Weather Channel Weather Alert Feature Locking Out Channels Special FeaturesUsing the Delay Function Locking OUT Channels or FrequenciesLocking Out Frequencies Reviewing the Lock-Out ChannelsLocked-out Reviewing Locked-Out FrequenciesClearing a Locked-Out Frequency Clearing All Lock Out Frequencies in a Search BankPriority Fm Page 52 Friday, September 17, 1999 1246 PM Display Description Changing the Receive ModeChanging the Frequency Step Using the AttenuatorRange MHz Search Step kHz Using the Keylock Using the Display BacklightTurning the KEY Tone on and OFF Cloning the Programmed Data from Scanner to Scanner Changing the Display ContrastUnderstanding Trunking Trunking OperationProgramming Fleet Maps Programming Trunking FrequenciesSize Code Press 8 and the display below appearsStoring Talk Group ID’s Talk Group ID’STalk Group ID Hold Reviewing Locked-Out Talk Group ID’s Locking Out Talk Groups IDClearing Talk Group ID’s Open and Closed Modes Closed ModeClearing All Talk Group ID’s in One Bank Mode Open Closed Changing the Open/Closed ModeHam Radio Frequencies General Guide to ScanningGuide to Frequencies US Weather FrequenciesThis scanner’s birdie frequencies in MHz are Typical Band Usage Guide to the Action BandsPrimary Usage Band Allocation Abbreviations ServicesAircraft Band- 108-137 MHz Meter Amateur BandVHF Low Band- 29-50 MHz -in 5 kHz steps Meter Amateur Band -50-54 MHzVHF High Band 148-174 MHz Low Band 450-470 MHz Public Safety Band Locally AssignedGovernment Band 406-420 MHz Cm Amateur Band 420-450 MHzPrivate Trunked Band Frequency ConversionGeneral Trunked Band Problem Possible Cause Remedy TroubleshootingFm Page 74 Friday, September 17, 1999 1246 PM Initializing the Scanner RESETTING/INITIALIZING the ScannerResetting the Scanner ResetFm Page 76 Friday, September 17, 1999 1246 PM Care and Maintenance UHF T Specifications9V DC RadioShack
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