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Radio Shack 20-422 owner manual Preparation, Removing the Display Protector, Connecting AN Antenna

Models: 20-422

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PREPARATION

This scanner is designed for use in the home as a base station. You can place it on any flat surface such as a desk, shelf, or table.

REMOVING THE DISPLAY PROTECTOR

Your scanner’s display is protected dur- ing shipment by a piece of film. Peel off this film before you use the scanner.

CONNECTING AN

ANTENNA

Connecting the Supplied Antenna

You must install an antenna before you can operate the scanner.

The supplied telescoping antenna helps your scanner receive strong local sig- nals. To install the antenna, thread it clockwise into the hole on the scanner’s top.

The scanner’s sensitivity depends on the antenna’s length and various envi- ronmental conditions. For the best re-

ception of the transmissions you want to hear, adjust the antenna’s length.

Frequency

Antenna Length

(MHz)

 

29–54

Extend fully

108–174

Collapse one segment

406–512

Collapse both segments

Connecting an Outdoor

Antenna

Instead of the supplied antenna, you can connect an outdoor base-station anten- na (not supplied) to your scanner. Your local RadioShack store sells a variety of antennas. Choose the one that best meets your needs.

When deciding on a base-station anten- na and its location, consider these points:

•The antenna should be as high as possible on the house.

•The antenna and its cable should be as far as possible from sources of electrical noise such as appliances or other radios.

•The antenna should be vertical for the best performance.

To connect a base-station antenna, first remove the supplied antenna from the scanner. Always use 50-ohm coaxial ca- ble, such as RG-58 or RG-8, to connect the base-station antenna. For lengths over 50 feet, use RG-8 low-loss dielec- tric coaxial cable. If the antenna cable’s connector does not fit in the ANT jack, you might also need an antenna plug

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Radio Shack 20-422 Preparation, Removing the Display Protector, Connecting AN Antenna, Connecting the Supplied Antenna
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20-422 specifications

The Radio Shack 20-422 is a versatile and compact handheld scanner that has garnered recognition among hobbyists and communication enthusiasts alike. This model is designed to provide users with an easy-to-use interface and advanced scanning capabilities, making it a popular choice for those looking to stay connected with public safety, aviation, and other radio communications.

One of the standout features of the Radio Shack 20-422 is its ability to scan a wide range of frequencies. With coverage from 30 MHz to 900 MHz, it allows users to access a diverse array of radio signals, including AM, FM, and analog transmissions. This broad frequency range ensures that operators can track vital communications from police departments, fire services, and emergency medical teams.

In addition to its expansive scanning capabilities, the 20-422 is equipped with 200 programmable channels. This enables users to store their favorite frequencies for quick access, thus enhancing the overall user experience. The unit is also compatible with commonly used trunking systems, which allows users to monitor communications from trunked radio systems, widely employed by public safety organizations.

The Radio Shack 20-422 comes with a customizable priority scanning feature, which allows users to set specific channels to scan more frequently. This ensures that important communications are not missed, adding a level of efficiency to the scanning process. Moreover, the scanner features a large LCD display that provides users with clear visibility of the frequency and other important information.

From a technological standpoint, the 20-422 is equipped with automatic frequency identification, which simplifies the process of discovering new radio signals. The built-in alert system notifies users when specific transmissions are detected, adding convenience to the scanning routine.

The ergonomic design of the Radio Shack 20-422 enhances ease of use, equipped with a comfortable grip and well-placed buttons for intuitive operation. The scanner is powered by a reliable battery system, ensuring long hours of dynamic scanning capabilities, whether you are in a stationary location or on the move.

In summary, the Radio Shack 20-422 stands out as a powerful tool for anyone interested in radio communications. With its extensive frequency coverage, programmable channels, and user-friendly design, this handheld scanner is perfect for hobbyists, emergency responders, and anyone else looking to stay connected with their community.