background image

6

RECEIVING AND 

TRANSMITTING

We recommend you try receiving transmissions before you 
transmit.

R

ECEIVING

 

1. Rotate 

OFF/VOLUME

 towards 

OFF

 until it clicks to turn 

off the CB.

2. Slide 

CB/WX

 to 

CB

.

3. Rotate 

SQUELCH

 fully counterclockwise.

4. Rotate 

RF GAIN

 fully clockwise.

5. Rotate 

OFF/VOLUME

 clockwise to turn on the CB. The 

display lights and the channel number appears. An 
alert sounds if a weather alert signal is detected (see 
“Using Digital Weather Alert” on Page 10).

6. To decrease CB sensitivity so you do not hear weak, 

distant signals, slowly rotate 

SQUELCH

 clockwise until 

the hissing stops. To increase sensitivity and to receive 
very weak signals, rotate 

SQUELCH

 counterclockwise. 

Ô

7. Rotate 

RF GAIN

 clockwise to optimize reception 

(incoming signal strength). Or, rotate it 
counterclockwise to decrease signal strength. 

Ô

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 desired channel.

9. Adjust 

VOLUME

 to a comfortable listening level.

10. To turn off the CB, rotate 

OFF/VOLUME 

counterclockwise to 

OFF

 until it clicks.

T

RANSMITTING

1. To transmit, hold down 

PTT 

on the microphone. Hold 

the microphone about 2–3 inches from your mouth and 
speak in a normal tone of voice. 

TX

 lights to indicate 

transmission.

2. When you finish transmitting, release 

PTT

TX

 turns off.

Ô

 NOTE 

Ô

 

Only rotate SQUELCH until the 
hissing stops. If you continue to 
rotate it clockwise, you will be 
unable to receive any signals.

You may want to purchase an 
SWR (Standard Wave Ratio) 
meter to measure your range 
and signal strength. This will 
enable you to adjust your 
antenna for maximum range, 
and determine the best position 
for RF GAIN. See your SWR 
meter owner’s manual for 
instruction on how to use it.

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...

Reviews: