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Radio Shack 21-1586, Owner'S Manual, Page: 19 / 20

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Radio Shack 21-1586 Owner'S Manual Download Page 19

19

SPECIFICATIONS

RECEIVER

Frequency Coverage  ................All 40 CB Channels (Class D) 26.965–27.405 MHz
Sensitivity for 10dB S/N ......................................  0.5 mV or better for 10 dB S+N/N
Adjacent Channel Rejection  .........................................................–40db (at 10 kHz)
Audio Output .................................................................................................. 1 Watt
Cross Modulation ............................................................................................ 50 dB
Squelch .................................................................  Adjustable from 0.7 mV to 1 mV

TRANSMITTER

Frequency Coverage  ................All 40 CB Channels (Class D) 26.965–27.405 MHz
Frequency Tolerance  ...................................................................................  0.005%
Output Power ............................................................................  4 Watts (Maximum)
Spurious Emission ........................................................................................ –60 dB
Type of Modulation  .............................................................................................. A3
Modulation Capability  .......................................................................................  90%
Antenna Impedance  ...................................................................................  50 Ohm

GENERAL

Power Requirements  ............................................. 13.8 Volts DC, Negative Ground

120 V AC, 60 Hz, using an optional power supply (Cat. No. 22-504)

Dimensions (HWD) ........................... 1

5

/

8

 

× 5

1

/

2 

¥ 6

7

/

8

 inches (41.5 ¥ 140 ¥ 175 mm)

Weight  .............................................................................................  26.4 oz (750 g)
Included Accessories ................................ Microphone Holder, Mounting Hardware

Specifications are typical, individual units might vary. Specifications are subject to
change and improvement without notice.

21-1586.fm  Page 19  Thursday, August 5, 1999  9:50 AM

Summary of Contents for 21-1586

Page 1: ...Cat No 21 1586 OWNER S MANUAL Please read before using this equipment TRC 442 Full Power 40 Channel Mobile CB Radio 21 1586 fm Page 1 Thursday August 5 1999 9 50 AM...

Page 2: ...ic Modulation Control prevents the transmitter signal from over modulating and distorting Automatic Noise Limiter reduces impulse type noises while receiving Adjustable Squelch reduces noise between t...

Page 3: ...open your CB radio s case Never change or replace anything in your CB radio Your CB radio might cause TV or ra dio interference even when it is oper ating properly To determine whether your CB radio i...

Page 4: ...er 8 Using the CB as a Base Station 9 Operation 10 Turning On the CB and Receiving Transmissions 10 Transmitting 11 CB Operation Tips 12 Common Uses for a CB Radio 12 Business Uses 12 Personal Uses 12...

Page 5: ...g screws Caution Be careful not to drill into anything behind the mount ing surface 3 Attach the holder at the mounting location using the supplied mount ing screws lockwashers wash ers and nuts MOUNT...

Page 6: ...tions for the screw holes on the mounting surface 2 In each marked location drill a hole slightly smaller than the sup plied mounting bolts Caution Be careful not to drill into objects behind the moun...

Page 7: ...it Note If you are using this CB as a base station see Using the CB as a Base Station on Page 9 Selecting an Antenna When deciding on an antenna and where to locate it consider these points The locat...

Page 8: ...ou can power this CB from your vehi cle s battery or from standard AC pow er with an optional DC power supply For information on using AC power see Using the CB as a Base Station on Page 9 Follow thes...

Page 9: ...tenna as described in its owner s man ual Warning Use extreme caution when you install or remove a base station CB antenna If the antenna starts to fall let it go It could con tact overhead power line...

Page 10: ...ific channel ro tate CHANNEL clockwise or coun terclockwise until the display shows the desired channel To rapidly move up or down the channels turn CHANNEL only slightly to the left or right 4 Slowly...

Page 11: ...from about 2 3 inches away The orange TX indi cator lights Note Do not speak too loudly when transmitting It does not make your signal any stronger and might distort your transmis sion 3 When you fin...

Page 12: ...traffic or that you will stop by the store on the way home If you are a two car or more fam ily CB radios are great for com municating with family members while they are in their cars Contact friends...

Page 13: ...10 11 _____ in service 10 12 Stand by 10 13 Report road weather condi tions 10 14 Information 10 15 Message delivered 10 16 Reply to message Code Meaning 10 17 En route 10 18 Urgent 10 19 Contact ___...

Page 14: ...location the higher the antenna the better the sig nal s range The surrounding terrain moun tains and tall buildings limit the range Weather conditions The number of nearby CBs oper ating on the same...

Page 15: ...the CB Trouble with transmission The CB is turned on VOLUME is turned up The microphone is securely connected to the CB All connectors are clean and tightened You are fully pressing PUSH TO TALK The...

Page 16: ...ectrical system Here are a few hints to help you re duce or eliminate such noise Make all CB power and antenna wires as short as possible Route the power wires away from the antenna wires Be sure that...

Page 17: ...emature wear of parts Handle the CB gently and carefully Dropping it can damage circuit boards and cases and can cause the CB to work improperly Wipe the CB with a damp cloth occasionally to keep it l...

Page 18: ...use only with another fuse of the same type and rating Follow these steps to replace the fuse 1 Make sure the power source and CB are both off 2 Holding the fuse holder by both ends push the ends toge...

Page 19: ...olerance 0 005 Output Power 4 Watts Maximum Spurious Emission 60 dB Type of Modulation A3 Modulation Capability 90 Antenna Impedance 50 Ohm GENERAL Power Requirements 13 8 Volts DC Negative Ground 120...

Page 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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