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7

When you choose an antenna, keep in
mind that, for the best performance, you
should mount the antenna:

• as high as possible on your vehicle,

home or building

• as far as possible from source of

electrical noise

• vertically

Once you choose an antenna, follow its
mounting instructions. Then route the
cable to the CB and connect the cable to

ANTENNA

 on the back of the CB.

Cautions:

• Avoid routing the cable next to sharp

edges or moving parts which might
damage the cable.

• Do not run the cable next to power

cables or other radio antenna
cables.

• Do not run the cable through a vehi-

cle’s engine compartment or other
areas that produce extreme heat.

To take advantage of your radio’s maxi-
mum range, adjust the antenna’s Stand-
ing Wave Ratio (SWR) using an SWR
meter (such as Cat. No. 21-523).

Follow the instructions supplied with the
SWR meter and antenna to adjust your
antenna’s SWR to the lowest possible
value. SWR values of 2.0:1 are general-
ly acceptable, with readings of 1.5:1 or
lower being more desirable.

CONNECTING THE 
MICROPHONE

1. Press the plastic tab on the top of

the supplied microphone’s plug and
align the 5-pin DIN microphone plug
with the corresponding pin holes in
the CB’s 

MIC

 jack. Then push the

plug into the mic jack. 

2. Slide the microphone onto the

microphone holder.

To disconnect the microphone from the
CB, press the plastic tab on the side of
the plug, then pull out the plug. 

Caution: Never pull on the microphone
cable.

Tab

21-1702.fm  Page 7  Thursday, August 5, 1999  1:02 PM

Содержание TRC-502

Страница 1: ...Cat No 21 1702 OWNER S MANUAL Please read before using this equipment TRC 502 40 Channel Mini Mobile CB Radio 21 1702 fm Page 1 Thursday August 5 1999 1 02 PM...

Страница 2: ...d transmit power Adjustable Squelch helps to elimi nate noise between transmissions Automatic Modulation prevents the transmitter signal from over modulating and distorting PLL Frequency Synthesizer p...

Страница 3: ...r replace anything in your CB radio Your CB radio might cause TV or radio interference even when it is operating properly To determine whether your CB radio is causing the interference turn off your C...

Страница 4: ...tation 8 Operation 10 Receiving Transmissions and Adjusting Squelch 10 Transmitting 11 Operational Hints 12 Common Uses for a CB 12 Personal Uses 12 Business Uses 12 Transmission Courtesy 12 Using Com...

Страница 5: ...holes at the desired location 2 At each marked position drill a hole slightly smaller than the mounting screws Caution Be careful not to drill into anything behind the mounting sur face 3 Mount the h...

Страница 6: ...crews Caution Be careful not to drill into objects behind the mounting sur face 3 Mount the bracket to the mounting surface with the 1 5 inch 5 mm mounting screws spring washers plain washers and nuts...

Страница 7: ...take advantage of your radio s maxi mum range adjust the antenna s Stand ing Wave Ratio SWR using an SWR meter such as Cat No 21 523 Follow the instructions supplied with the SWR meter and antenna to...

Страница 8: ...a 13 8V DC power supply that can supply at least 1 5 amps such as Cat No 22 504 Caution Most 13 8V DC power supplies plug into a standard AC outlet to produce DC power Before connecting your CB to a 1...

Страница 9: ...n the DC power supply 4 Connect the CB s red wire to the positive terminal on the DC power supply 5 Connect the DC power supply to a standard AC outlet Caution To prevent damage to the CB be sure you...

Страница 10: ...e channel num ber appears 3 Press or on the base to select the desired channel 4 Adjust VOLUME to a comfortable lis tening level 5 To cut out background noise between transmissions wait until there is...

Страница 11: ...on Page 10 2 To transmit press PUSH TO TALK on the microphone The red TX indica tor lights Hold the microphone 2 3 inches from your mouth and speak in a normal tone of voice 3 To turn off the CB turn...

Страница 12: ...ooking back at camp Business Uses For security officers a CB is more than a convenience it is a must for both safety and efficiency Truck drivers and delivery personnel can learn road and traffic cond...

Страница 13: ...Message received and under stood 10 5 Relay information to _____ 10 6 I am busy or are you busy 10 7 Out of service 10 8 In service 10 9 Repeat last message 10 10 Negative NO 10 11 _____ in service 1...

Страница 14: ...e try to eliminate the noise by finding its source You can determine the noise s source by turning off the engine and operating the CB with your vehicle s ignition set to ACC or ON If the noise is red...

Страница 15: ...E CB has trouble transmit ting Turn power on Antenna connected Secure connections All connections free of corrosion Clean and tighten Microphone connector loose Firmly press connector into MIC jack Ra...

Страница 16: ...istort or melt plastic parts Keep the CB away from dust and dirt which can cause premature wear of parts Handle the CB gently and carefully Dropping it can damage circuit boards and cases and can caus...

Страница 17: ...so might damage your CB Follow these steps to replace the fuse 1 Make sure the power source and CB are both off 2 Hold the fuse holder by both ends push the ends together twist one end counterclockwi...

Страница 18: ...Class D 26 965 to 27 405 MHz Frequency Tolerance 100 Hz Nominal Output Power 3 7 Watts Nominal Modulation Type A3 Antenna Impedance 50 Ohm Spurious Emission 67 dB or Better Modulation Capability 90 C...

Страница 19: ...19 NOTES 21 1702 fm Page 19 Thursday August 5 1999 1 02 PM...

Страница 20: ...ng the warranty period take the product and the RadioShack sales receipt as proof of purchase date to any RadioShack store RadioShack will at its option un less otherwise provided by law a correct the...

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