Radio Shack PRO-93 owner manual Understanding Trunking

Page 51

Important: To listen to the transmission, the mode of the programmed channel must be the same as that of the trunking channel (MOT, or ED).

When an ID code is received, the ID list for the bank is searched, and if found, the text name stored for the ID appears. If not found, scanning resumes immediately unless the bank is in open trunking mode.

Note: There might be more than one talk group transmit- ting at a time in some Motorola trunking systems. If you set the scanner to manually tune in Motorola trunking mode, you will hear the talk group on that channel, but the display will alternate between all active IDs.

Trunking group frequencies are included in the supplied Trunking Guide. Frequency fleet map and talk group in- formation is also widely available on the Internet, (for ex- ample, at www.trunkscanner.com).

UNDERSTANDING TRUNKING

In the past, groups that transmit frequently, such as po- lice departments, could transmit on only a few frequen- cies. This resulted in heavy traffic and often required 2- way radio users to wait for a specific frequency to clear before transmitting. Trunked systems allow more groups of 2-way radio users to use fewer frequencies. Instead of selecting a specific frequency to transmit on, a trunked system chooses one of several frequencies when the 2- way radio user transmits. The system automatically transmits the call on that frequency, and also sends a code that identifies that 2-way radio user's transmission on a control channel.

Your scanner lets you easily hear both the call and re- sponse transmissions for that 2-way radio user and therefore follow the conversation. For EDACS and Mo- torola (above 406 MHz range), the scanner monitors the control channel between each transmission to identify talk groups.

Trunking Operation

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Contents PRO-93 Contents Trunking Operation Special FeaturesTroubleshooting SpecificationsGeneral Guide to Frequencies Features Character, 4-Line, Alphanumeric Display shows Features FCC Wants You to Know Pager transmissions Scrambled or encrypted transmissions Scanning LegallyPower Sources Using BatteriesPreparation Preparation11 Charging Rechargeable Batteries Using Vehicle Battery Power Using AC PowerConnecting an Optional Antenna Connecting the AntennaListening Safely Connecting AN EARPHONE/ HeadphonesTransferring Data to and from Another Scanner or a PC Traffic SafetyConnecting an Extension Speaker Using the Belt ClipLook AT the Keypad About Your ScannerAbout Your Scanner Quick Start Understanding BanksChannel Storage Banks AM Mode Understanding Your Scanners ModesSearch Banks Motorola Mode FM ModeEdacs Mode Open and Closed Modes Operation Turning on the Scanner and Setting SquelchStoring Known Frequencies Into Channels Storing Trunking Frequencies Into Channels Assigning a Text Tag to a Channel Storing Text TagsAssigning a Text Tag to a Bank Assigning a Text Tag to a Group IDButtons Characters Text Input ChartFinding and Storing Active Frequencies Searching a Preprogrammed Frequency RangeBank Band Operation31 Search bank SR0 Marine band Receive mode FM32Operation Search bank SR1 CB band Receive mode AM Group Search bank SR2 Police/Fire band Receive Mode FMSearch bank SR4 Ham band Receive mode FM Search bank SR3 Aircraft Receive mode AMSpecial Notes Manually Tuning a Frequency Listening to the Weather BandListening to a Weather Channel WX Alert and Beep Tone Confirmation Displaying Weather MessagesCopying a Frequency into a Specified Channel Using Frequency Copy FunctionCopying a Frequency into the Priority Channel Scanning the ChannelsDeleting Frequencies from Channels Turning Channel-Storage Banks Off and OnLocking Out Channels Special FeaturesUsing the Delay Function Locking OUT Channels or FrequenciesReviewing the Lock-Out Channels Locking Out FrequenciesReviewing Locked-Out Frequencies Priority Clearing a Locked-Out FrequencyClearing All Locked-Out Frequencies in a Search Bank Special Features Changing the Receive Mode Using the Attenuator Using the Display Backlight Using the KeylockTurning the KEY Tone on and OFF Cloning the Programmed Data Changing the Display ContrastTrunking Operation Understanding Trunking Programming Trunking Frequencies Setting Squelch for the Trunking ModeÂ8EBýòVò + +ôýòò +0èýEFE Programming Motorola Trunking Systems UHF-Lo Programming Motorola Trunking System 800 MHz Programming Fleet Maps Size Code Storing Talk Group IDs Talk Group IDs8Wdaý&#& ED ?ýDe$ý&& CEJ0ý&// ?ç Talk Group ID Hold 8Wdaý&#& ED ?ýDe$ý& CEJ0ýdedLocking Out Talk Group IDs Turning an ID Sub-Bank On or OffDelay Function in ID Indication Mode Reviewing Locked-Out Talk Group IDsClearing Talk Group IDs Clearing All Talk Group IDs in One Bank Open and Closed ModesGeneral Guide to Frequencies Changing the Open/Closed ModeUS Weather Frequencies in MHz Ham Radio FrequenciesBirdie Frequencies UHF High Band MHz VHF Band Guide to the Action BandsTypical Band Usage HF BandPrimary Usage Band AllocationAbbreviations Services High Frequency HF Very High Frequency VHF Aircraft Band-108-137 MHz in 12.5 kHz steps BUS Ultra High Frequency UHF Cm Amateur Band 420-450 MHz in 6.25 kHz steps Conventional Systems Band Locally Assigned in 6.25 kHz steps Frequency Conversion Squelch is not Turn Squelch TroubleshootingRESETTING/INITIALIZING the Scanner Resetting the ScannerInitializing the Scanner Care Sensitivity 20 dB S/N Specifications82Specifications Specifications83 Limited One-Year Warranty
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PRO-93 specifications

The Radio Shack PRO-93 is a handheld scanner that has become a favorite among radio enthusiasts and hobbyists since its introduction. This versatile device is known for its exceptional performance in receiving a wide array of frequencies and its user-friendly interface, making it an accessible tool for both beginners and experienced users alike.

One of the defining features of the PRO-93 is its ability to scan various bands, including VHF, UHF, and frequencies used by public service agencies such as police, fire, and emergency medical services. With its 200 channels and dynamic memory allocation, users can easily program and organize their favorite frequencies for quick access. The scanner supports both conventional and trunked systems, allowing users to keep up with the latest communications in their area.

The PRO-93 employs advanced technologies such as computer control and the ability to be interfaced with a PC for programming and updates. Users can quickly manage their channels and settings through software, enhancing their overall experience. The scanner also features a built-in backlit display, providing excellent visibility in low-light conditions, which is especially useful during nighttime operations.

Another key characteristic of the PRO-93 is its versatility in terms of battery life. The scanner operates on standard alkaline or rechargeable batteries, offering the user flexibility in power management. The incorporation of a power-saving mode helps extend battery life, making this scanner ideal for on-the-go use.

In addition to its exceptional scanning capabilities, the PRO-93 includes a range of useful features such as the ability to store up to 50 frequencies into 10 memory banks, allowing easy categorization and retrieval of channels. It also supports multiple modulation modes, including FM, AM, and Narrowband, which broadens the scope of communications that can be monitored.

Overall, the Radio Shack PRO-93 stands out as a reliable and feature-rich handheld scanner. Its combination of extensive frequency coverage, user-friendly programming options, and robust build quality makes it an attractive choice for anyone interested in the world of radio communications. Whether you’re a casual listener or a dedicated scanner aficionado, the PRO-93 delivers an engaging and informative experience.
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