Radio-shack TRC-519 User Manual download pdf (Page 13)

13

• Ever have car trouble or run out of

gas on the highway? What an assur-

ance it is to be able to call for assis-

tance!

• Camping, fishing, and other sports

are more fun with a CB. Locate a

buddy or find out “what’s cooking”

back at camp.

TRANSMISSION

COURTESY

Please follow these guidelines of radio

courtesy when using your CB.

• 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 several minutes be-

fore trying again.

• Do not hold down the talk button

when you are not talking. (This is

called dead keying.)

• Assist callers with directions, infor-

mation about road conditions, and

any other reasonable requests.

MAXIMUM RANGE

The maximum range and quality of CB

transmissions vary depending on the fol-

lowing conditions:

• the type and quality of antenna used

• the height of the antenna’s mounting

location — the higher the antenna,

the better the signal’s range

• the surrounding terrain — moun-

tains and tall buildings limit the

range

• weather conditions

• the number of nearby CBs operating

on the same channel

• standing wave ratio (SWR) between

the antenna and the CB.

Note:

Your CB radio’s transmission

range is generally line-of-sight.

REDUCING NOISE

The Audio Clarity Enhance (ACE) circuit

uses compander (compressor and ex-

pander) technology to improve commu-

nication quality. The circuit maintains

the dynamic range while increasing the

signal-to-noise ratio as the gain is auto-

matically controlled according to the in-

put signal level. This results in a

reduction in wide band noise.

Because your CB is exceptionally quiet,

any noise you hear is probably from an

external source in your vehicle, such as

the alternator, another radio, or spark

plugs.

You can determine the noise’s source

by turning off the engine and operating

the CB with your vehicle’s ignition set to

ACC. If the noise is reduced, the prob-

lem is in your vehicle’s ignition or electri-

cal system.

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