Radio Shack TRC-237 owner manual Features, PLL Phase-Locked-Loop Frequency

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FEATURES

Your RadioShack TRC-237 40-Channel 5- Watt CB Walkie Talkie with Channel 9/19 Priority Switch is a portable, two-way radio you can carry almost anywhere. The chan- nel priority switch lets you quickly switch to either Channel 9 to report emergency situ- ations, or to Channel 19 to transmit and re- ceive information about road and traffic conditions. You can use your TRC-237 around the house, in your office, or in your car or boat. You can also use it on fishing trips, or at your business for supervisory, security, or warehouse personnel.

Your TRC-237 also has the following fea- tures:

Transmit Power High/Low Switch — lets you reduce the transceiver’s power output during short-range transmissions to save battery power.

Transmit Indicator lights whenever

you press the transmit button.

Modulation Indicator lights when you speak into the microphone. The indicator brightens as modulation increases.

Built-In Modulation Limiter Circuit —

automatically adjusts to a variety of voice levels to ensure a clear transmission.

PLL (Phase-Locked-Loop) Frequency

Synthesizer provides reliable and ex- act tuning.

Adjustable Squelch — helps to eliminate noise between transmissions.

© 1997, 1998 Tandy Corporation.

All Rights Reserved.

RadioShack is a registered trademark

used by Tandy Corporation.

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Contents TRC-237 Features PLL Phase-Locked-Loop FrequencyDigit LED Display lets you easily Battery Test Button and Battery IndicaFlexible Antenna with BNC Connector Automatic Noise Limiter ANL CircuitFCC Information Contents Powering the CB Using the Power Jack and ALKALINE/NI-CD SwitchUsing Batteries Fm Page 8 Thursday, August 5, 1999 1143 AM Fm Page 9 Thursday, August 5, 1999 1143 AM Testing the Battery Power Thursday, August 5, 1999 1143 AM Using Vehicle Battery Power Using AC Power Thursday, August 5, 1999 1143 AM Connecting Antenna Connecting an Optional Antenna Thursday, August 5, 1999 1143 AM Receiving Transmissions Adjusting Squelch OperationThursday, August 5, 1999 1143 AM Transmitting CB Operation Tips Common Uses for a CB RadioUsing Common 10-CODES Code MeaningCode Meaning CB Courtesy Maximum RangeTroubleshooting Symptom SuggestionMaintenance Specifications ReceiverLimited Ninety-Day Warranty