Radio Shack TRC-446 owner manual Replacing the Fuses

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21-1574.fm Page 20 Thursday, May 13, 1999 4:03 PM

REPLACING THE FUSES

The TRC-446's 2-amp fuses help pro- tect your CB from power surges and short circuits.

•If the red wire's fuse is blown, replace it with a 2-amp,fast-acting glass fuse, such as Cat. No. 270- 1007.

•If the orange wire's fuse is blown, replace it with a 1-amp,fast-acting glass fuse, such as Cat. No. 270- 1005.

Follow these steps to replace each fuse.

1.Make sure the power source and CB are both off.

2.To open the fuse holder, push the fuse holder ends together, then turn either end counterclockwise and release it.

3.If the fuse is blown, replace it.

Caution: Do not use a fuse with rat- ings other than those specified here. Doing so might damage your TRC- 446.

4.Close the fuse holder by pushing the fuse holder ends together, then turn either end clockwise.

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Contents TRC-446 Features FCC Information Contents Mounting the TRC-446 InstallationMounting the Microphone Holder Connecting Microphone AntennaInstalling AN Antenna Using Vehicle Battery PowerConnecting an Antenna Selecting an AntennaExternal CB Speaker Using the CB AS a Base StationConnecting Optional External Speakers Adjusting the Standing Wave Ratio Public Address SpeakerSet S/RF/SWR/CAL to CAL Set S/RF/SWR/CAL to SWRRatio Rating Evaluation Standing Wave Ratio GuidelinesStanding Wave Ratio Performance Quick Look AT the Controls NoaaOperation Turning on the CB and Receiving TransmissionsChanging Channels Using the Controls on the Microphone TransmittingListening to Weather Broadcasts Frequency Channel MHzUsing the Public Address Function Weather AlertCB Operation Tips Typical Uses For a CB RadioBusiness Uses Personal UsesUsing Common 10-CODES Code MeaningMaximum Range Reducing NoiseCH9/NOR/CH-19 is set to NOR TroubleshootingSymptom Check That Care and Maintenance Replacing the Fuses Specifications GeneralPublic Address Fm Page 23 Thursday, May 13, 1999 403 PM Limited Ninety-Day Warranty Vised of the Possibility of Such Damages

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.