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quires that scanners be manufactured in such a way as to not be easily modifiable to pick up those transmis- sions. Do not open your scanner's case to make any modifications that could allow it to pick up transmis- sions that it is not legal to listen to. Doing so could sub- ject you to legal penalties.

We encourage responsible, legal scanner use.

CONTENTS

Preparation

10

Power Sources

10

Using Internal Batteries

10

Charging Nickel-Cadmium Batteries

12

Using AC Power

13

Using Vehicle Battery Power

14

Connecting the Antenna

16

Connecting an Optional Antenna

16

Connecting an Earphone/Headphones

17

Listening Safely

17

Traffic Safety

17

Connecting an Extension Speaker

18

Attaching the Belt Clip

18

About Your Scanner

19

A Look at the Keypad

20

A Look at the Display

21

Understanding Banks

23

Service Banks

23

Channel Storage Banks

23

Monitor Memories

24

Operation

25

Turning On the Scanner/Setting Squelch

25

Storing Known Frequencies into Channels

26

Searching For and Temporarily Storing

 

Active Frequencies

27

Limit Search

27

Direct Search

28

Service Bank Search

29

Search Skip Memory

30

Listening to the Monitor Memories

31

Moving a Frequency From a Monitor Memory

 

to a Channel

31

Scanning the Stored Channels

32

Manually Selecting a Channel

32

6

 

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Radio Shack PRO-91 owner manual Contents

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.