Radio Shack TRC-519 - Manual (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.
21-1709.fm Page 13 Monday, January 29, 2001 10:29 AM