Radio Shack PRO-90 owner manual Trunk Tracking, Types of Trunking Systems

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TRUNK TRACKING

Your scanner is designed to track transmissions on Mo- torola Type I, Type II, and hybrid analog trunking sys- tems, which are extensively used in 800 MHz communications. Remember these important points when tracking transmissions:

•Your scanner monitors Type II systems by default. However, you can change this if the system in your area is different (see “Types of Trunking Systems” below and “Scanning Type I and Hybrid Trunked Systems” on Page 44 for more information).

•Your scanner cannot track transmissions on non- Motorola trunking systems.

•Your scanner cannot track an 800 MHz trunked sys- tem and scan frequencies in conventional mode at the same time.

•The frequencies for many of the 800 MHz public safety systems are listed in the separate “National Public Safety Trunked System Frequency Guide” included with your PRO-90.

TYPES OF TRUNKING SYSTEMS

Your trunk tracking scanner can monitor two basic types of systems — Type I and Type II. Instead of selecting a specific frequency to transmit on, a trunked system chooses one of several frequencies in a 2-way radio us- er’s talk group when that user presses PTT (push to talk). Thus, trunking systems allocate a few frequencies among many different users, but the way Type I and Type II systems do this is slightly different. One important distinction between these systems is the amount of data transmitted by each radio when its push-to-talk button (PTT) is pressed. In a Type I system, the radio’s ID and its current affiliation (the trunk system it belongs to) are both transmitted. In a Type II system, only the radio’s ID is transmitted.

Why the difference? In Type I systems, each radio in the trunk group individually transmits its own affiliation, while the trunk system maintains a database that determines each radio's affiliation(s) in Type II systems.

Another difference between the systems is that Type I systems are arranged in a fleet-subfleet hierarchy. For example, it is possible for a city using a Type I system to designate 4 fleets, each with 8 subfleets.

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Contents PRO-90 300-Channel TrunkTracker Scanner Features Page Frequency Range Step Transmission FCC Notice Scanning LegallyContents General Guide to Scanning Troubleshooting Care and Maintenance SpecificationsTrunk Tracking Preparation Power SourcesUsing the Rechargeable Battery Pack Using Standard AC Power Using Vehicle Battery Power SocketConnecting the Antenna Connecting an Optional Antenna Listening Safely Connecting AN EARPHONE/ HeadphonesTraffic Safety Connecting AN Extension Speaker Attaching the Belt ClipUnderstanding Your Scanner Look AT the KeypadPage Look AT the Display Page Service Banks Understanding BanksUnderstanding Trunking Channel Storage BanksTurning on the Scanner and Setting Squelch OperationStoring Known Frequencies Into Channels Limit Search Scanning Service Banks Page Deleting a Stored Frequency Scanning the Stored ChannelsManually Selecting a Channel Special Features DelayLocking Out Channels Turning CHANNEL-STORAGE Banks on and OFFLocking OUT Channels and Frequencies Priority Locking Out FrequenciesPage Using the Keylock Using the Display BacklightChanging Search Speeds Normal Search HyperSearchBattery Save Skipping Data SignalsTrunk Tracking Types of Trunking SystemsSetting the Scanner to the Trunk Tracking Mode Setting Squelch for the Trunk Tracking Mode Programming Trunked FrequenciesPage Scanning a Trunked Bank Monitoring an Active ID Unlocking All IDs Locking Out IDsUnlocking a Single ID Using Trunk Tracking Scan Delay Monitoring IDsChannel Activity Indicators Scan Lists Manually Storing IDs into Scan ListsStoring IDs Into Scan Lists While Search- ing Automatically Storing an ID in a Scan List LocationScanning the Scan Lists Deleting a Stored IDScanning Type I and Hybrid Trunked Systems Size Fleets Subfleets IDs Block Used E1P1 E1P2 E1P3 Block Size Code E1P4 E1P5 E1P6 Block Size Code S12E1P10 E1P11 E1P12 Block Size Code E1P4 E1P5 E1P6 Block Size CodeE1P7 E1P8 E1P9 Block Size Code E1P16 Block Size Code Selecting a Preset Fleet MapE1P13 E1P14 E1P15 Block Size Code Programming a Fleet Map Programming a Hybrid System General Guide to Scanning Guide to FrequenciesNational Weather Frequencies Canadian Weather FrequenciesGuide to the Action Bands Typical Band UsagePrimary Usage VHF BandBand Allocation AbbreviationsVery High Frequency VHF Ultra High Frequency UHF Conventional Systems Band Locally Assigned Frequency Conversion Troubleshooting Problem Possible Remedy CauseError Adjust squelch for Care and Maintenance Specifications Power Requirements Limited One-Year Warranty
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PRO-90 specifications

The Radio Shack PRO-90 is a compact yet powerful handheld scanner that has garnered attention from both hobbyists and serious enthusiasts of radio communications. Introduced as a versatile scanner, the PRO-90 is designed for ease of use while providing a myriad of features that enhance the scanning experience.

One of the key characteristics of the PRO-90 is its advanced scanning technology. The unit boasts a 100-channel memory, allowing users to store and quickly access frequently used frequencies. The scanner supports a wide range of frequency bands, making it suitable for monitoring everything from police and fire frequencies to aviation and marine channels. With programmable scanning capabilities, users can effortlessly create their own scanning routines tailored to their interests.

The PRO-90 also features a fast scanning rate, with the ability to scan across frequencies at remarkable speeds. This minimizes the wait time for users who want to listen to different bands or channels, ensuring they never miss critical transmissions. Additionally, the scanner includes a dedicated "Hold" function that allows users to temporarily pause on a specific frequency for extended listening.

In terms of ease of use, the PRO-90 is designed with an intuitive interface. The scanner includes a backlit LCD display, making it easy to read in low-light environments. The keypad is arranged logically, enabling quick access to functions such as volume, squelch, and memory management. Users can also program the scanner via PC, thanks to its compatibility with programming software, making it easier to manage and transfer frequency lists.

Another standout feature of the PRO-90 is its ability to decode various digital signals. This includes some types of Motorola, GE, and other digital technologies, which are commonly used in modern communications. This capability extends its usefulness beyond traditional analog signals, making the scanner relevant in today’s digital landscape.

Moreover, the Radio Shack PRO-90 is designed with portability in mind. Its compact size and lightweight construction make it an ideal companion for outdoor activities, road trips, or simply enjoying the local communications landscape. Whether you’re a seasoned radio enthusiast or a newcomer to the field, the PRO-90 provides a rich set of features, advanced technology, and user-oriented design that enhance the scanning experience. It stands out as a worthy tool for anyone looking to immerse themselves in the world of radio communication.
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