Radio Shack TRC-504 Owner's Manual
Radio Shack TRC-504 Owner's Manual

Radio Shack TRC-504 Owner's Manual

Compact 40-channel mobile cb radio with on-mic channel selector

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21-1704.fm Page 1 Thursday, August 5, 1999 1:20 PM
Cat. No. 21-1704
OWNER'S MANUAL
Please read before using this equipment.
TRC-504
40-Channel Mobile CB Radio
with On-Mic Channel Selector

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Summary of Contents for Radio Shack TRC-504

  • Page 1 21-1704.fm Page 1 Thursday, August 5, 1999 1:20 PM Cat. No. 21-1704 OWNER’S MANUAL Please read before using this equipment. TRC-504 40-Channel Mobile CB Radio with On-Mic Channel Selector...
  • Page 2 21-1704.fm Page 2 Thursday, August 5, 1999 1:20 PM FEATURES Your RadioShack TRC-504 Compact Backlit Controls — help you easily find 40-Channel Mobile CB Radio is a break- the right control when you use the CB at through in CB design technology. You night.
  • Page 3: Fcc Information

    21-1704.fm Page 3 Thursday, August 5, 1999 1:20 PM FCC INFORMATION Your CB radio might cause TV or radio interference even when it is operating properly. To determine whether your CB The Federal Communications Commis- radio is causing the interference, turn off sion (FCC) does not require you to have your CB radio.
  • Page 4: Table Of Contents

    21-1704.fm Page 4 Thursday, August 5, 1999 1:20 PM CONTENTS Installation ....................... 5 Attaching the Microphone Holder ............... 5 Mounting the Transceiver ................... 5 Connecting an Antenna ..................6 Connecting the Microphone ................7 External Speaker ....................8 Connecting a CB Speaker ................8 Connecting a PA Speaker ................
  • Page 5: Installation

    21-1704.fm Page 5 Thursday, August 5, 1999 1:20 PM INSTALLATION ATTACHING THE MICROPHONE HOLDER You can attach the microphone holder to either side of the transceiver or to anoth- er location in your vehicle. To attach the holder to the transceiver, secure the holder to either side using the supplied 3 mm screws and lock washers.
  • Page 6: Connecting An Antenna

    21-1704.fm Page 6 Thursday, August 5, 1999 1:20 PM Cautions: • If you use the CB 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.
  • Page 7: Connecting The Microphone

    21-1704.fm Page 7 Thursday, August 5, 1999 1:20 PM When you choose an antenna, keep in Follow the instructions supplied with the mind that, for the best performance, you SWR meter and antenna to adjust your should mount the antenna: antenna’s SWR to the lowest possible value.
  • Page 8: External Speaker

    21-1704.fm Page 8 Thursday, August 5, 1999 1:20 PM CONNECTING AN Connecting a PA Speaker EXTERNAL SPEAKER The PA speaker should: You can connect your transceiver to an external CB speaker, so you can hear • have an impedance of 8 ohms an incoming call when you are outside •...
  • Page 9: Using Vehicle Battery Power

    21-1704.fm Page 9 Thursday, August 5, 1999 1:20 PM USING VEHICLE BATTERY USING THE POWER TRANSCEIVER AS A BASE STATION Follow these steps to connect the trans- ceiver to vehicle battery power. Although this transceiver is designed mainly for mobile use, you can also use it as a base station with an AC power source.
  • Page 10 21-1704.fm Page 10 Thursday, August 5, 1999 1:20 PM Caution: To prevent damage to the CB, 4. Connect the transceiver’s red wire be sure you connect an antenna and the (with the in-line fuse) to the positive microphone before you use the CB. (+) terminal on the DC power sup- ply.
  • Page 11: Operation

    21-1704.fm Page 11 Thursday, August 5, 1999 1:20 PM OPERATION Before you use your CB, you should 5. Set to select OUT/CH9/CH19 know how to use it effectively and cour- a channel other than an emergency teously. “Operational Hints” on Page 14 channel.
  • Page 12: Transmitting

    21-1704.fm Page 12 Thursday, August 5, 1999 1:20 PM 9. To turn off the CB, turn EMERGENCY CHANNEL VOLUME counterclockwise until you hear it click. The display and indicators turn Important: Channel 9 and Channel 19 off. are reserved for motorist assistance and for reporting emergency information about accidents, hazardous road condi- TRANSMITTING...
  • Page 13: Using The Monitor Feature

    21-1704.fm Page 13 Thursday, August 5, 1999 1:20 PM Follow these steps to use the PA ampli- USING THE MONITOR fier. FEATURE 1. Turn on the transceiver. Then set appears on You can use your CB as a receiver to PA/MON/CB the display.
  • Page 14: Operational Hints

    21-1704.fm Page 14 Thursday, August 5, 1999 1:20 PM OPERATIONAL HINTS Like most activities, CB radio has its • Truck drivers and delivery personnel customs and courtesies. The following can learn road and traffic conditions tips will help you get the most enjoyment and get assistance in locating desti- from your CB.
  • Page 15: Using Common 10-Codes

    21-1704.fm Page 15 Thursday, August 5, 1999 1:20 PM USING COMMON 10- Code Meaning CODES 10-16 Reply to message. Citizen’s band operators and CB radio 10-17 En route. users have largely adopted the 10- 10-18 Urgent. codes for standard questions and an- swers.
  • Page 16: Maximum Range

    21-1704.fm Page 16 Thursday, August 5, 1999 1:20 PM MAXIMUM RANGE The maximum range and quality of CB radio transmissions vary depending on the following conditions: • The type and quality of antenna used • The height of the antenna’s mount- ing location —...
  • Page 17: Troubleshooting

    21-1704.fm Page 17 Thursday, August 5, 1999 1:20 PM TROUBLESHOOTING If your CB is not working as it should, follow these suggestions to see if you can elim- inate the problem. If you cannot, take the CB to your local RadioShack store for as- sistance.
  • Page 18 21-1704.fm Page 18 Thursday, August 5, 1999 1:20 PM Symptom Check/Try PA does not work. Connect a PA speaker. Secure connections. Be sure is set o PA/MON/CB Adjust VOLUME Sound is distorted. Adjust RF GAIN Adjust VOLUME...
  • Page 19: Reducing Noise

    21-1704.fm Page 19 Thursday, August 5, 1999 1:20 PM REDUCING NOISE • Install noise suppressors on your spark plugs, or install new spark plugs that have built-in noise sup- Because your CB is exceptionally quiet, pressors. any noise you hear is probably from an external source in your vehicle such as •...
  • Page 20: Care And Maintenance

    21-1704.fm Page 20 Thursday, August 5, 1999 1:20 PM CARE AND MAINTENANCE Your RadioShack TRC-504 40-Channel Mobile CB Radio is an example of superior design and craftsmanship. The following suggestions will help you care for your CB so you can enjoy it for years.
  • Page 21: Replacing The Fuse

    21-1704.fm Page 21 Thursday, August 5, 1999 1:20 PM REPLACING THE FUSE The TRC-504’s 2-amp in-line fuse helps protect your CB from power surges and short circuits. When replacement is re- quired, use a 2-amp, slow-blow glass fuse, such as Cat. No. 270-1023.
  • Page 22: Specifications

    21-1704.fm Page 22 Thursday, August 5, 1999 1:20 PM SPECIFICATIONS RECEIVER Frequency Coverage ....All 40 CB Channels (Class D) 26.965–27.405 MHz Sensitivity for 10dB S/N .................. 0.6 mV Squelch Sensitivity ..................1000 mV Overall Audio Fidelity for 450–2500 Hz ............–6 dB Maximum Audio Output Power ...............
  • Page 23 21-1704.fm Page 23 Thursday, August 5, 1999 1:20 PM GENERAL Power Requirements ..........12 Volts DC, Negative Ground Dimensions (HWD) ......1 ¥ 5 ¥ 8 inches (42 ¥ 141 ¥ 213 mm) Weight ....................2 lb 3 oz (1 kg) Included Accessories ........
  • Page 24 21-1704.fm Page 24 Thursday, August 5, 1999 1:20 PM Limited Ninety-Day Warranty This product is warranted by RadioShack against manufacturing defects in material and workman- ship under normal use for ninety (90) days from the date of purchase from RadioShack company- owned stores and authorized RadioShack franchisees and dealers.

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