Radio Shack PRO-92 owner manual Understanding CTCSS/DCS, Search Banks, DPL Codes

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The 1st digit identifies the bank (0–9). The 2nd and 3rd digits identify the channel within the bank (00–49).

Search Banks

This scanner is able to search 10 search banks. You can also replace a bank with one of the pre-programmed ser- vice bands. (For the default setting, see “Searching a Preprogrammed Frequency Range” on Page 34.)

Note: You can increase the number of preprogrammed frequency ranges your scanner can receive (up to 100) using an optional PC interface kit (available at your local RadioShack store).

UNDERSTANDING CTCSS/DCS

Continuous Tone Coded Squelch System (CTCSS) and Digital Coded Squelch (DCS) are two methods used to prevent interference by other radio communications. Your scanner can receive transmissions that use these codes.

When your scanner receives a CTCSS transmission, PL (private line) appears. When your scanner receives a DCS transmission, DPL (digital private line) and a 3-dig- it code appear.

PL Codes

PL codes are low-frequency audio tones that are used to differentiate different users on the same channel. PL codes appear according to the EIA standard CTCSS tones, and range from 67.0 Hz to 254.1 Hz. PL codes are displayed directly as a frequency.

DPL Codes

DPL codes are similar to PL codes, except they might be transmitted as either tones or digital codes. Although there are as many as 4096 DPL codes, only about 100 are actually used.

DPL codes appear in the format Dxxx, where xxx is an octal code.

About Your Scanner

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Contents PRO-92 Handheld Scanner Contents Operation Special FeaturesGeneral Guide to Scanning TroubleshootingCare Specifications Trunking OperationFeatures Scanner scans Features Scanning Legally FCC NoticePreparation Power SourcesUsing Batteries Preparation11 Replace the cover Charging Rechargeable BatteriesUsing AC Power PWR DC 9V jack Using Vehicle PowerConnecting an Optional Antenna Connecting the AntennaListening Safely Connecting AN EARPHONE/ HeadphonesTraffic Safety Connecting AN Extension SpeakerUsing the Belt Clip About Your Scanner Connecting the Clone CableLook AT the Keypad About Your Scanner Look AT the Display Channel Storage Banks 7 are turned off Search ModeUnderstanding Banks DPL Codes Understanding CTCSS/DCSSearch Banks PL CodesOpen and Closed Modes Understanding Your SCANNER’S ModesAM Mode LTR E. F. Johnson Mode FM ModeMotorola Mode Edacs Mode 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 To Enter a Character from this Group Text Input ChartFunc 9 w x y z Finding and Storing Active FrequenciesSearching a Preprogrammed Frequency Range PressCurrent Search Bank Func then Tune Storing a Frequency While Searching for a Specified ChannelChanging a Search Range with a Preprogrammed Range Manually Changing a Search Range Scanning the ChannelsTurning Channel-Storage Banks Off and On Manually Tuning a FrequencyDisplaying Weather Messages Deleting Frequencies from ChannelsListening to the Weather Band Listening to a Weather ChannelUsing the Delay Function Special FeaturesLocking Out Frequencies Locking OUT Channels or FrequenciesLocking Out Channels Reviewing the Lock-Out ChannelsLocked-out Reviewing Locked-Out FrequenciesClearing a Locked-Out Frequency Clearing All Lock Out Frequencies in a Search BankPriority Special Features Display Description Changing the Receive ModeChanging the Frequency Step Range MHz Search Step kHz Using the AttenuatorChanging the Display Contrast Using the Display BacklightUsing the Keylock Turning the KEY Tone on and OFFCloning the Programmed Data from Scanner to Scanner Trunking OperationUnderstanding Trunking Programming Trunking Frequencies Setting Squelch for the Trunking ModeProgramming Motorola Trunking Systems UHF-Lo Offset Frequency Size Code Programming Fleet MapsTalk Group IDS Talk Group ID Hold Storing Talk Group IDsClearing All Talk Group IDs in One Bank Locking Out Talk Group IDsReviewing Locked-Out Talk Group IDs Clearing Talk Group IDsOpen and Closed Modes Closed ModeGeneral Guide to Scanning Changing the Open/Closed ModeMode Open Closed Birdie Frequencies Guide to FrequenciesUS Weather Frequencies Ham Radio FrequenciesGeneral Guide to Scanning VHF Band Guide to the Action BandsTypical Band Usage Primary UsageBand Allocation Abbreviations ServicesAircraft Band- 108-137 MHz Meter Amateur BandVHF Low Band- 29-50 MHz in 5 kHz steps Meter Amateur Band- 50-54 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 UHF T Specifications9V DC Specifications71 Limited One-Year Warranty

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