Radio Shack TRC-237 owner manual Thursday, August 5, 1999 1143 AM

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21-1650.fm Page 14

Thursday, August 5, 1999 11:43 AM

Cautions:

The power supply must be able to deliver 12 volts and at least 1200 mil- liamps of power. The recommended power supply meets these specifica- tions. Using a power supply that does not meet these specifications could damage the TRC-237 or the power supply.

You must use a DC fused cord that supplies 12 volts and delivers at least 1200 milliamps of power. Its center tip must be set to positive, and its barrel plug must correctly fit the TRC-237’s POWER jack. The rec- ommended fused cord meets these specifications. Using a fused cord that does not meet these specifica- tions could damage the TRC-237 or the fused cord.

To help prevent an electrical short, unplug the DC fused cord’s plug from the AC adapter’s power socket be- fore you unplug the cord’s barrel plug from the TRC-237.

Follow these steps to connect the TRC- 237 to AC power.

1.If the TRC-237 is on, turn OFF/VOL- UME fully counterclockwise until it clicks to turn it off.

2.Connect the DC fused cord’s 5.5 mm outer diameter/2.1 mm inner diame- ter barrel plug to the TRC-237’s

POWER jack.

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

4.Plug the DC fused cord’s other end into the power supply’s power socket.

5.Plug the power supply into a stan- dard AC outlet, then turn on the pow- er supply.

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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