21-1574.fm Page 7 Thursday, May 13, 1999 4:03 PM

INSTALLING AN

ANTENNA

Caution: To prevent damage to your CB, do not attempt to transmit without an antenna attached.

Selecting an Antenna

When you decide on an antenna and its location, consider these points:

•The antenna should be positioned as high as possible.

•The antenna and the antenna cable should be routed as far as possible from any source of electrical noise such as ignition systems, electric gauges, and motors.

Your local RadioShack store sells a vari- ety of CB antennas for both mobile and base-station use. Choose the one that best meets your needs.

Connecting an Antenna

Follow the mounting instructions sup- plied with the antenna you choose. Route the antenna cable to the CB, then thread the PL-259 antenna cable plug into ANTENNA on the back of the CB.

Cautions:

•Do not run the cable over sharp edges or moving parts that might damage it.

•Do not run the cable next to power cables or other CB antenna cables.

•Do not run the cable through a vehi- cle's engine compartment or other areas that produce extreme heat.

USING VEHICLE

BATTERY POWER

You can power this CB from your vehi- cle's battery or from standard AC power with an optional DC power supply. For in- formation on using AC power, see “Using the CB as a Base Station” on Page 8.

Follow these steps to power the CB from your vehicle's battery.

1.Plug the single-connector end of the power cord into POWER 13.8V DC on the CB's back panel.

2.Connect the black wire to your vehi- cle’s negative (–) battery terminal or to a metal part of the vehicle's frame that is not insulated from the frame by a plastic part.

3.Connect the red wire, with its in-line fuse, to a source of voltage that turns on and off with the ignition switch, such as a spare accessory terminal in your vehicle's fuse box. This assures you that power to the CB is turned off when you turn off the ignition.

4.Connect the orange wire, with its in- line fuse, to a source of voltage that supplies constant positive (+) power (regardless of the ignition switches position) or directly to your vehicle's positive (+) battery terminal. This enables the radio to “remember” the last channel you tuned to when you turn the radio back on.

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Radio Shack TRC-446 Installing AN Antenna, Using Vehicle Battery Power, Selecting an Antenna, Connecting an Antenna
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TRC-446 specifications

The Radio Shack TRC-446 is a classic handheld CB (Citizens Band) radio, well-regarded in the realm of two-way communication devices. Released in the 1980s, it has become a sought-after collector's item due to its impressive features, build quality, and ease of use.

One of the defining characteristics of the TRC-446 is its compact and portable design. Weighing less than many of its contemporaries, it fits comfortably in the hand and is lightweight enough for prolonged use. This makes it an excellent choice for outdoor enthusiasts, truck drivers, and hobbyists alike. Its robust construction ensures that it can withstand the rigors of daily use.

In terms of technology, the TRC-446 operates on the standard 40 channels designated for CB radios in the United States, allowing users to communicate over short distances. It incorporates AM modulation, which was the primary mode of communication for CB radios, ensuring compatibility with a wide range of other devices. The operating range can reach several miles, depending on the terrain, making it ideal for both urban and rural communication.

The user interface is designed for simplicity, featuring a clear display with channel indicators, an easy-to-access volume control, and a squelch knob to eliminate background noise. The push-to-talk button is conveniently placed, providing seamless access during conversations. Additionally, the TRC-446 comes equipped with a built-in microphone, making voice transmission effortless.

Another noteworthy feature is the external antenna jack, which allows for improved communication range. Users can connect various antennas, enhancing their ability to send and receive signals in challenging environments.

The TRC-446 also supports compatibility with additional accessories, such as handsets and speakers, allowing for a more customizable communication experience. The battery life is decent for a handheld device, with options for both rechargeable and disposable batteries, making it versatile for different use cases.

In conclusion, the Radio Shack TRC-446 represents a significant piece of communication technology from the late 20th century. With its reliable performance, user-friendly design, and compatibility with a range of accessories, it remains a cherished model among CB radio enthusiasts. Whether for nostalgia or practical use, the TRC-446 stands out as a testament to the enduring appeal of two-way radio communication.
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