Radio Shack TRC-446, Owner'S Manual

Page 1: ...Cat No 21 1574 OWNER S MANUAL Please read before using this equipment TRC 446 Deluxe 4 Watt 40 Channel Mobile CB Radio with Weather Alert and ACE 21 1574 fm Page 1 Thursday May 13 1999 4 03 PM...

Page 2: ...weather alert Built In SWR Meter helps you tune your antenna system to optimize your CB s performance RF Gain Control lets you adjust re ception to match the strength of the re ceived signal Convenien...

Page 3: ...sion FCC does not require you to have a license to operate this CB However the FCC does require that you read and know Part 95 of FCC Rules These rules apply to the operation of a Class D CB We have p...

Page 4: ...the Standing Wave Ratio 9 Standing Wave Ratio Guidelines 10 Standing Wave Ratio Performance 10 A Quick Look at the Controls 11 Operation 12 Changing Channels Using the Controls on the Microphone 13 L...

Page 5: ...46 in a vehicle mount it securely to avoid damage to the CB or vehicle or injury to any one in the vehicle during sudden starts or stops Do not mount the CB where it could damage or interfere with the...

Page 6: ...the plug s locking nut clockwise 3 Slide the microphone onto the microphone holder To disconnect the microphone unscrew the locking nut and gently pull out the microphone plug Caution Always grasp th...

Page 7: ...eas that produce extreme heat USING VEHICLE BATTERY POWER You can power this CB from your vehi cle s battery or from standard AC power with an optional DC power supply For in formation on using AC pow...

Page 8: ...to remove the antenna DO NOT attempt to do so yourself 2 Route the antenna cable to the CB then connect the cable to ANTENNA on the back of the CB 3 Plug the single connector end of the power cord int...

Page 9: ...teps to adjust the standing wave ratio Note The SWR on some mobile and base station antennas cannot be changed 1 Turn on the CB by turning OFF VOL UME clockwise until it clicks 2 Set S RF SWR CAL to C...

Page 10: ...rade with a subsequent rise in the SWR Anytime you notice that the SWR reading is greater than 3 1 check the condi tion of the antenna the antenna cable and all antenna connectors and hardware Ratio R...

Page 11: ...brate Switch CB Weather Alert Pub lic Address Switch Noise Blanking On Off Switch Audio Clarity Enhancer On Off Switch Channel Display Transmit Receive Indicator Weather Alert Indicator Squelch Contro...

Page 12: ...ly tune channels turn the tuning control beneath the display to select a channel The selected channel number appears and the SWR RF Signal Meter shows the signal strength To quickly tune to Channel 9...

Page 13: ...of your transmis sion Note Do not speak too loudly when transmitting It does not make your signal any stronger and might dis tort your transmission 3 When you finish transmitting release the microphon...

Page 14: ...ceives this signal tone WX ALERT lights orange regardless of the position of CB WX PA NOAA transmits this tone for 5 to 10 seconds If the TRC 446 is set to CB or PA the orange light remains on even af...

Page 15: ...in traffic or that you will stop by the store on the way home If you are a two or more car family CBs are great for inter car communi cations while family members are going places Contact friends or...

Page 16: ...eived 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 10 12...

Page 17: ...ed by spark plugs or the ignition of your car or another radio might be more than the circuit can com pensate for If you suspect engine noise as a source turn off the engine and operate the CB with th...

Page 18: ...A on the rear of the radio and attached securely to the antenna at the other end Transmission difficulties The CB is turned on OFF VOLUME is at a sufficient listening level The microphone is securely...

Page 19: ...stort 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 cause...

Page 20: ...at No 270 1005 Follow these steps to replace each fuse 1 Make sure the power source and CB are both off 2 To open the fuse holder push the fuse holder ends together then turn either end counterclockwi...

Page 21: ...Output 4 5 Watts Maximum Frequency Response 450 2500 Hz Intermediate Frequency 1st IF 10 695 MHz 2nd IF 455 KHz Cross Modulation 50 dB Squelch Adjustable from 0 5 V to 1 mV TRANSMITTER Output Power 4...

Page 22: ...wer 1 2 Amps WEATHER RADIO Frequency Coverage MHz 162 400 162 425 162 450 162 475 162 500 162 525 162 550 Specifications are typical individual units might vary Specifications are subject to change an...

Page 23: ...23 NOTES 21 1574 fm Page 23 Thursday May 13 1999 4 03 PM...

Page 24: ...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 law a correc...