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To silence the alert tones, press 

ALERT TONE OFF

WX/ALERT 

flashes until you switch to WX mode and listen to 

the broadcast. Or press 

PTT

 to silence the alert tones so 

WX/ALERT 

stops flashing. 

Ô

To reduce the alert tone levels for subsequent alerts, hold 
down 

ALERT TONE OFF

 for about two seconds while 

WX/ALERT

 flashes. The tone stops and 

WX/ALERT

 flashes 

slowly. If the radio receives a new weather alert, three 
low-level, short beeps sound (regardless of alert type). 

To listen to the weather when an alert is received, slide 

CB/WX

 to 

WX

WX/ALERT

 turns off. 

U

SING

 D

UAL

 W

ATCH

You can set your radio to constantly monitor for emergency 
(Channel 9) signals. If an emergency signal is received, the 
CB radio automatically tunes to Channel 9 so you can hear 
the broadcast. When finished, the radio returns to the 
previous station. This feature only works in CB mode.

To activate dual watch, press 

DUAL WATCH

DUAL WATCH

 

lights. Press 

DUAL WATCH

 again to deactivate.

R

EPLACING

 

THE

 F

USE

The CB’s in-line fuse protects it from power surges and 
short circuits. When replacement is required, use a 2-amp, 
fast-acting glass fuse, available at your local RadioShack 
store.

1. Make sure the vehicle and CB are turned off.

2. Hold the fuse holder at both ends, push the ends 

together, twist one end counterclockwise, and pull them 
apart.

3. Remove the old fuse and inspect its condition. If it is 

blown, insert a new one of the same type and rating. If 
it is not blown, reinsert it. 

4. Push the fuse holder ends together and twist one end 

clockwise.

Ô

 NOTE 

Ô

 

You cannot transmit while 
WX/ALERT flashes in CB mode.

Fuse

Fuse Holders

 CAUTION 

Do not use a fuse with ratings 
other than those specified here. 
Doing so will make your CB 
susceptible to electrical damage.

Summary of Contents for TRC521 CB

Page 1: ...rts and so on UP DN Press or hold down to scroll up or down through channels Microphone Mounting Bracket Microphone Holder PTT Push to talk Hold down and talk into the microphone while transmitting Mo...

Page 2: ...ch the CB wires and cables are clear of the vehicle s pedals or other moving parts the CB is not directly in front of heating vents all wires and cables can reach their connection points 1 Use the mou...

Page 3: ...g s locking nut clockwise to secure it 3 Slide the microphone onto the holder 4 To disconnect the microphone unscrew the locking nut and pull the microphone plug toward you Do not pull the microphone...

Page 4: ...it to the ANT jack CONNECTING TO VEHICLE BATTERY POWER 1 Connect the CB s red POWER wire to a terminal in your vehicle s fuse box that has power only when the ignition is in the ACC accessory or ON p...

Page 5: ...ative terminal on the DC power supply 4 Connect the CB s red POWER wire to the positive terminal on the DC power supply 5 Connect the DC power supply to a standard AC outlet CAUTION Most 12 volt DC po...

Page 6: ...se signal strength 8 To tune to a channel rotate CHANNEL on the radio or press UP or DN on the microphone To quickly scroll through channels in either direction hold down UP or DN until you reach the...

Page 7: ...mpleted standing by 10 11 Talking too rapidly 10 12 Visitors present 10 13 Advise Weather Road conditions 10 17 Urgent business 10 18 Anything for us 10 19 Nothing for you Return to base 10 20 My loca...

Page 8: ...nvenience it is a must for both safety and efficiency PERSONAL USE Keep in touch with home while driving to work to the store or to a social activity Let your family know you are tied up in traffic or...

Page 9: ...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 source by turning off the...

Page 10: ...ALERT lights Channel Frequency MHz WX1 162 400 WX2 162 425 WX3 162 450 WX4 162 475 WX5 162 500 WX6 162 525 WX7 162 550 Alert Type You Hear Warning Continuous short beeps Watch Three short beeps and a...

Page 11: ...t When finished the radio returns to the previous station This feature only works in CB mode To activate dual watch press DUAL WATCH DUAL WATCH lights Press DUAL WATCH again to deactivate REPLACING TH...

Page 12: ...t to your local RadioShack store for assistance To locate your nearest RadioShack use the store locator feature on RadioShack s website www radioshack com or call 1 800 The Shack 843 7422 and follow t...

Page 13: ...CB might cause TV or radio interference even when it is operating properly To determine whether your CB is causing the interference turn off your CB If the interference goes away your CB is causing it...

Page 14: ...ve Battery Drain 280 mA to 1500 mA from No Signal to Maximum Output TRANSMITTER Frequency Tolerance 0 0005 Maximum Output Power 4 Watts maximum allowed by FCC Spurious Emission 65 dB or better Transmi...

Page 15: ...ACCESSORIES Depending on how and where you plan to use your CB radio the following accessories can be used with your CB radio for enhanced fuctionality and power Visit your local RadioShack store or g...

Page 16: ...roduct defect during 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...

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