Radio Shack TRC-494 owner manual CB Courtesy, Maximum Range

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21-1589.fm Page 12 Thursday, August 5, 1999 10:10 AM

CB COURTESY

Wait for a pause in someone else’s transmission before you ask for a break.

If you do not receive an answer to your call after a second attempt, sign off and wait sev- eral minutes before trying again.

Do not hold down the PUSH TO TALK button when you are not talking. (This is called dead key- ing.)

Assist callers with directions, road conditions, and any other reasonable requests.

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MAXIMUM RANGE

The maximum range and quality of CB transmissions vary depending on these conditions:

The type and quality of antenna used

The height of the antenna’s mounting location — the higher the antenna, the better the sig- nal’s range

The surrounding terrain — mountains and tall buildings limit the range

Weather conditions

The current setting of RANGE on your CB

The number of nearby CBs operating on the same channel

Standing Wave Ratio (SWR) between the antenna and the CB. You can check the SWR between the CB and a mobile antenna using an SWR tester (Cat. No. 21-523). Follow the instructions supplied with the SWR tester and the mobile antenna to change the SWR, if necessary.

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Contents TRC-494 TRC-494 Digital Channel-Number Display IntroductionIntroduction FCC Information FCC Information Contents Contents Preparation Supplying PowerPreparation Attaching the Antenna Directly to the CB Attaching AntennaAttaching Antenna Using the Antenna’s Magnetic Base Using the Antenna’s Magnetic Base Using the CB Using the CB Setting Range Setting Range Using the Weatheradio Using the Weatheradio Common Uses for a CB Radio CB Operation TipsCB Operation Tips Maximum Range CB CourtesyCB Courtesy Code Meaning Using Common CodesUsing Common Codes Symptom Remedy TroubleshootingTroubleshooting Reducing Noise Reducing Noise Maintenance Maintenance Replacing the Power CORD’S Fuse Replacing the Power CORD’S Fuse Transmitter SpecificationsReceiver Specifications Fm Page 19 Thursday, August 5, 1999 1010 AM Fm Page 19 Thursday, August 5, 1999 1010 AM Radio Shack Limited Warranty Radio Shack Limited Warranty