21-1574.fm Page 8 Thursday, May 13, 1999 4:03 PM

USING THE CB AS A BASE STATION

Although this CB is designed for mobile use, you can also use it as a base sta- tion. For base-station installation, you need a regulated 12-volt DC power sup- ply, such as Cat. No. 22-504 available at your local RadioShack store.

Caution: Most 12-volt DC power sup- plies plug into a standard AC outlet to produce DC power. Before connecting your CB to a 12-volt DC power supply, read and follow the instructions included with the power supply.

You also need a base station antenna and coaxial antenna cable and connec- tors. Your local RadioShack store also carries a wide selection of suitable an- tennas, cables, and connectors.

Follow these steps to install the CB as a base station.

1.Mount the base station antenna as described in its owner's manual.

Warning: Use extreme caution when you install or remove a base station CB antenna. If the antenna starts to fall, let it go! It could contact overhead power lines. If the antenna touches the power line, contact with the antenna, mast, cable, or guy wires can cause electrocution and death. Call the power company to remove the antenna. DO NOT attempt to do so yourself.

2.Route the antenna cable to the CB, then connect the cable to ANTENNA on the back of the CB.

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

4.Connect the black wire to the DC power supply's negative (–) termi- nal.

5.Connect the red wire and orange wires, with in-line fuses, to the DC power supply's positive (+) terminal.

Note: Due to the lack of a constant 12VDC, as in an automotive installation, if you turn off the DC power supply, the CB “remembers” the last channel you tuned for only a few minutes. When you turn on the CB and the DC power supply again, the radio automatically tunes to Channel 9.

CONNECTING OPTIONAL EXTERNAL SPEAKERS

You can connect an external CB or PA speaker to your CB. The larger, external speaker provides greater clarity. A PA speaker lets you take advantage of the amplifier and mic to use the CB as a public-address system.

External CB Speaker

To connect an external CB speaker, use a speaker rated at 8-ohms and ca- pable of handling 3–10 watts of power (such as Cat. No. 21-549). Simply plug the speaker cable's 1/8-inch plug into EXT SP. Connecting the external speak- er automatically disconnects the inter- nal speaker.

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Radio Shack TRC-446 owner manual Using the CB AS a Base Station, Connecting Optional External Speakers, External CB Speaker
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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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