Radio Shack TRC-235, 21-1620 owner manual Using AC Power

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•When you finish using the TRC-235, unplug the fused cord from the ciga- rette-lighter socket before you dis- connect it from your TRC-235.

1.If the TRC-235 is on, turn OFF/VOL- UME fully counterclockwise until it clicks to turn it off.

2.Be sure ALKALINE/NI–CD inside the battery compartment is set to ALKA- LINE.

3.Insert the power cord’s 5.5 mm outer diameter/2.1 mm inner diameter bar- rel plug into the POWER jack.

4.Plug the power cord’s other end into your vehicle’s cigarette-lighter sock- et.

Note: If the TRC-235 does not oper- ate when you use the DC power cord, unplug the cord from the ciga- rette-lighter socket and clean any ashes or debris from the socket. If your TRC-235 still does not work, check the fuse in the DC power cord and replace it if necessary.

USING AC POWER

You can power your TRC-235 from stan- dard AC power using an optional 12-volt AC adapter that provides 1 amp, such as RadioShack Cat. No. 273-1653.

Cautions:

•The adapter must be able to deliver 12 volts and at least 1 amp, its cen- ter tip must be set to positive, and the barrel plug must correctly fit the TRC-235’s POWER jack. The recom- mended adapter meets these speci- fications. Using an adapter that does not meet these specifications could damage the TRC-235 or the adapter.

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Contents TRC-235 Battery Test Button and Battery Indica FeaturesFCC Information Fm Page 4 Thursday, August 5, 1999 1116 AM Contents Using the Power Jack and ALKALINE/NI-CD Switch Powering the CBUsing Batteries Fm Page 8 Thursday, August 5, 1999 1116 AM Fm Page 9 Thursday, August 5, 1999 1116 AM Testing the Battery Power Thursday, August 5, 1999 1116 AM Power jack Using Vehicle Battery PowerUsing AC Power Thursday, August 5, 1999 1116 AM External Antenna Thursday, August 5, 1999 1116 AM Operation Receiving Transmissions Adjusting SquelchThursday, August 5, 1999 1116 AM Transmitting When you finish speaking, release the buttonCommon Uses for a CB Radio CB Operation TipsCode Meaning Using Common 10-CODESCode Meaning Maximum Range CB CourtesyChannel Transmit Receive Adding CrystalsChannel Transmit Receive Thursday, August 5, 1999 1116 AM Channel C Channel B Channel a Symptom Suggestion TroubleshootingMaintenance Receiver SpecificationsThursday, August 5, 1999 1116 AM RadioShack Division of Tandy Corporation Fort Worth, Texas

TRC-235, 21-1620 specifications

The Radio Shack 21-1620, commonly referred to as the TRC-235, is a notable entry in the world of CB radios. Designed to cater to both novice and experienced users, this particular model embodies a blend of functionality, reliability, and user-friendly features.

One of the standout characteristics of the TRC-235 is its compact and portable design, making it an ideal choice for both mobile and stationary applications. The unit is compact enough to fit into tight spaces while still offering a robust set of features that enhance communication capabilities. With a durable construction, it is designed to withstand the rigors of transportation, whether in a vehicle or on a work site.

In terms of performance, the TRC-235 operates on the standard 40 CB channels, providing users with ample options for communication. This capability is essential for those who require clear and constant communication, especially in areas where other forms of communication may fail. Additionally, the radio features an adjustable RF gain control, which allows users to filter out unwanted noise and focus on the transmission quality. This adjustment enables clearer conversations, which is crucial in high-traffic areas.

The Radio Shack 21-1620 also comes equipped with several essential features designed to enhance usability. A built-in built-in speaker ensures clear audio output, while the external mic jack allows for the attachment of an external microphone, improving sound clarity further. The unit’s easy-to-read LED display displays channel and frequency information, helping users navigate through channels effortlessly.

Furthermore, the TRC-235 integrates advanced technology, such as automatic noise limiter circuitry, which significantly reduces background noise for clearer communication. The radio also supports a range of modulation types, including AM, which is standard in CB radios.

For those who appreciate versatility, the TRC-235 allows for seamless integration with other communication equipment, such as antennas and amplifiers, enhancing its performance and range.

In summary, the Radio Shack 21-1620 TRC-235 is a well-rounded CB radio that balances user-friendly features, durable construction, and advanced communication technology. It remains a reliable choice for those seeking effective communication solutions in various environments. Whether for recreational use or professional applications, the TRC-235 stands out as a trusted companion in the CB radio spectrum.
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