Radio Shack PRO-91 owner manual Charging Nickel-Cadmium Batteries

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If BATT.Lo flashes and the scanner beeps every 15 seconds, replace (standard/alkaline) or recharge (re- chargeable nickel-cadmium) the batteries.

Caution: Always dispose of old batteries promptly and properly. Do not bury or burn them.

Charging Nickel-Cadmium Batteries

The scanner has a built-in circuit that lets you recharge nickel-cadmium batteries while they are in the scanner.

To charge the batteries, set ALKALINE JACK NI- CD to NI-CD, install the nickel-cadmium batteries in the scanner, and connect an external AC or DC adapter to the scanner’s POWER jack (see “Using AC Power” on Page 12 or “Using Vehicle Battery Power” on Page 13).

Warning: Do not connect either adapter to the scanner if non-rechargeable batteries (such as alkaline batter- ies) are installed in the scanner and ALKALINE JACK NI-CDis set to NI-CD, or you are unsure of the switch’s position. Non-rechargeable batteries will get hot and can even explode if you try to recharge them.

Before you use nickel-cadmium batteries for the first time, charge them at least 24 hours to bring them to a full charge.

Discharged batteries take about 10 to 18 hours to fully recharge. If you use the scanner while the batteries are charging, charging takes longer.

Notes:

•Nickel-cadmium batteries last longer and deliver more power if you occasionally let them fully dis- charge. To do this, simply use the scanner until it beeps every 15 seconds and BATT.Lo flashes.

•To prevent damage to nickel-cadmium batteries, never charge them in an area where the tempera- ture is above 113°F or below 40°F.

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Contents PRO-91 150-Channel Handheld Trunking Scanner Features Fm Page 3 Wednesday, August 4, 1999 332 PM Frequency Step Transmission Range MHz KHz Scanning Legally FCC NoticeContents General Guide to Scanning Special FeaturesTrunk Tracking Fm Page 8 Wednesday, August 4, 1999 332 PM Preparation Power SourcesUsing Internal Batteries Fm Page 10 Wednesday, August 4, 1999 332 PM Charging Nickel-Cadmium Batteries Using AC Power Using Vehicle Battery Power Plug the adapter’s barrel plug into your scanner’s Connecting an Optional Antenna Connecting the AntennaListening Safely Connecting AN EARPHONE/ HeadphonesTraffic Safety Attaching the Belt Clip Connecting AN Extension SpeakerAbout Your Scanner Look AT the Keypad Look AT the Display Fm Page 21 Wednesday, August 4, 1999 332 PM Channel Storage Banks Service BanksUnderstanding Banks Monitor Memories Operation Turning on the Scanner and Setting SquelchStoring Known Frequencies Into Channels Limit Search Searching for and Temporarily Storing Active FrequenciesDirect Search Service Bank Search Search Skip Memory Moving a Frequency from a Monitor Memory to a Channel Listening to the Monitor MemoriesManually Selecting a Channel Scanning the Stored ChannelsFm Page 32 Wednesday, August 4, 1999 332 PM Turning CHANNEL-STORAGE Banks on and OFF Special FeaturesDelay Priority Locking OUT ChannelsFm Page 35 Wednesday, August 4, 1999 332 PM Normal Search Hypersearch Using the KeylockUsing the Display Backlight Changing Search SpeedsTurning the KEY Tone OFF/ON Turning the Battery Save Function OFF/ONSkipping Data Signals Types of Trunking Systems Trunk TrackingII systems. Nevertheless, Type I systems are still in use Setting the Scanner to the Trunk Tracking ModeStoring Trunked Frequencies Setting Squelch for the Trunk Tracking ModeFm Page 42 Wednesday, August 4, 1999 332 PM Scanning a Trunked Bank Temporarily Storing an ID into the Monitor ID Memory Monitoring an Active IDUnlocking All IDs Locking Out IDsUnlocking a Single ID Monitoring IDs Using Trunk Tracking Scan DelayChannel Activity Bars Manually Storing IDs into Scan Lists Scan ListsDeleting a Stored ID Moving IDs to Scan ListsScanning Type I and Hybrid Trunked Systems Scanning the Scan ListsProgramming a Fleet Map Size Fleets Subfleets IDs Blocks Used E1P1 E1P2 E1P3 Size E1P4 E1P5 E1P6 Size Selecting a Preset Fleet Map Programming a Hybrid System Canadian Weather Frequencies General Guide to ScanningGuide to Frequencies National Weather FrequenciesVHF Band Guide to the Action BandsTypical Band Usage Primary UsageAbbreviations Band AllocationVery High Frequency VHF Ultra High Frequency UHF Frequency Conversion Problem Possible Remedy Cause TroubleshootingError Adjust squelch for Resetting the Scanner Care and Maintenance Specifications Fm Page 69 Wednesday, August 4, 1999 332 PM Fm Page 70 Wednesday, August 4, 1999 332 PM Fm Page 71 Wednesday, August 4, 1999 332 PM RadioShack Division of Tandy Corporation Fort Worth, Texas Limited One-Year Warranty

PRO-91 specifications

The Radio Shack PRO-91 is a handheld scanner that appeals to both amateur radio enthusiasts and professionals seeking a reliable and versatile communication device. Known for its user-friendly design and wide range of features, the PRO-91 is an excellent choice for monitoring various frequencies, including VHF and UHF bands.

One of the standout features of the PRO-91 is its capability to scan frequencies in the 25-1300 MHz range, which allows users to listen in on a variety of communications. This includes police, fire, and emergency services, as well as amateur radio transmissions and aircraft communications. The scanner supports both analog and some digital formats, making it adaptable to different communication standards and ensuring users stay updated with relevant broadcasts.

The PRO-91 comes with 200 programmable channels, allowing users to store their favorite frequencies for quick access. It also features a million frequency search capability, enabling it to detect active signals within the scanning range. Additionally, the scanner includes a priority channel function, permitting users to designate a specific frequency to continuously monitor while scanning through other channels.

Another notable characteristic of the PRO-91 is its triple conversion design, which enhances sensitivity and selectivity, resulting in improved audio clarity and reduced interference. The unit is equipped with a robust speaker that delivers clear sound quality, making it easy to understand transmissions even in noisy environments.

Users will appreciate the ergonomic design of the PRO-91, which features intuitive controls and a backlit LCD display for easy visibility, even in low-light conditions. The keypad layout is designed for straightforward operation, allowing even novice users to navigate through menus and settings with ease.

The PRO-91 is powered by a rechargeable battery, offering extended usage without the need for constant battery replacements. Its compact and lightweight construction makes it portable, making it suitable for on-the-go monitoring.

In conclusion, the Radio Shack PRO-91 offers an impressive array of features, technologies, and characteristics that cater to diverse scanning needs. With its wide frequency range, programmable channels, and superior audio quality, it stands out as a reliable choice for anyone looking to explore the world of radio communication. Whether for recreational use or professional monitoring, the PRO-91 ensures users remain connected to the signals that matter most.
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