Radio Shack TRC-494 Owner's Manual
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Radio Shack TRC-494 Owner's Manual

40-channel emergency citizen’s band weatheradio
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21-1589.fm Page 1 Thursday, August 5, 1999 10:10 AM
Cat. No. 21-1589
OWNER'S MANUAL
Please read before using this equipment.
TRC-494
40-Channel Emergency
Citizen's Band Weatheradio

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Summary of Contents for Radio Shack TRC-494

  • Page 1 21-1589.fm Page 1 Thursday, August 5, 1999 10:10 AM Cat. No. 21-1589 OWNER’S MANUAL Please read before using this equipment. TRC-494 40-Channel Emergency Citizen’s Band Weatheradio...
  • Page 2 21-1589.fm Page 1 Thursday, August 5, 1999 10:10 AM Cat. No. 21-1589 OWNER’S MANUAL Please read before using this equipment. TRC-494 40-Channel Emergency Citizen’s Band Weatheradio...
  • Page 3 Digital Channel-Number Display — makes it easy to see which chan- nel is selected. © 1996 Tandy Corporation. Radio Shack is a registered trademark used by Tandy Corporation. Range Control — lets you eliminate background noise when no strong signals are present.
  • Page 4 Digital Channel-Number Display — makes it easy to see which chan- nel is selected. © 1996 Tandy Corporation. Radio Shack is a registered trademark used by Tandy Corporation. Range Control — lets you eliminate background noise when no strong signals are present.

  • Page 5: Fcc Information

    21-1589.fm Page 3 Thursday, August 5, 1999 10:10 AM For your records, we urge you to record your CB’s serial number in the space below. The serial number is on the CB’s back panel. Serial Number:_________________ FCC INFORMATION The Federal Communications Com- mission (FCC) does not require you to have a license to operate this CB.
  • Page 6 21-1589.fm Page 3 Thursday, August 5, 1999 10:10 AM For your records, we urge you to record your CB’s serial number in the space below. The serial number is on the CB’s back panel. Serial Number:_________________ FCC INFORMATION The Federal Communications Com- mission (FCC) does not require you to have a license to operate this CB.

  • Page 7: Table Of Contents

    21-1589.fm Page 4 Thursday, August 5, 1999 10:10 AM CONTENTS PREPARATION ... 5 Supplying Power... 5 Using Vehicle Battery Power ... 5 Installing the Battery Pack ... 5 Attaching the Antenna ... 6 Attaching the Antenna Directly to the CB ... 6 Using the Antenna’s Magnetic Base ...
  • Page 8 21-1589.fm Page 4 Thursday, August 5, 1999 10:10 AM CONTENTS PREPARATION ... 5 Supplying Power... 5 Using Vehicle Battery Power ... 5 Installing the Battery Pack ... 5 Attaching the Antenna ... 6 Attaching the Antenna Directly to the CB ... 6 Using the Antenna’s Magnetic Base ...

  • Page 9: Preparation

    Installing the Battery Pack Your CB uses eight AA batteries for power. For the best performance and longest life, we recommend alkaline batteries, such as Radio Shack Cat. No. 23-552. Note: When you connect the DC power cord to the CB, the battery pack automatically disconnects.
  • Page 10 Installing the Battery Pack Your CB uses eight AA batteries for power. For the best performance and longest life, we recommend alkaline batteries, such as Radio Shack Cat. No. 23-552. Note: When you connect the DC power cord to the CB, the battery pack automatically disconnects.

  • Page 11: Attaching The Antenna

    21-1589.fm Page 6 Thursday, August 5, 1999 10:10 AM 3. Install the batteries in the holder as indicated by the polarity sym- bols (+ and –) marked on the holder. 4. Slide the battery pack’s case over the holder until it snaps into place.
  • Page 12 21-1589.fm Page 6 Thursday, August 5, 1999 10:10 AM 3. Install the batteries in the holder as indicated by the polarity sym- bols (+ and –) marked on the holder. 4. Slide the battery pack’s case over the holder until it snaps into place.

  • Page 13: Using The Antenna's Magnetic Base

    CB when the ve- hicle is moving, you need an optional standard mount antenna (available at your local Radio Shack store). You also need a plug adapter (Cat. No. 278-208) to connect the standard an- tenna’s PL-259 plug to...
  • Page 14 CB when the ve- hicle is moving, you need an optional standard mount antenna (available at your local Radio Shack store). You also need a plug adapter (Cat. No. 278-208) to connect the standard an- tenna’s PL-259 plug to...

  • Page 15: Setting Range

    21-1589.fm Page 8 Thursday, August 5, 1999 10:10 AM USING THE CB Before you start using your CB, you should know how to use it effectively and courteously. “CB Operation Tips” contains information that will help you use and enjoy your CB. Note: Before you operate the CB, be sure you connect a power source and an antenna to the CB.
  • Page 16 21-1589.fm Page 8 Thursday, August 5, 1999 10:10 AM USING THE CB Before you start using your CB, you should know how to use it effectively and courteously. “CB Operation Tips” contains information that will help you use and enjoy your CB. Note: Before you operate the CB, be sure you connect a power source and an antenna to the CB.

  • Page 17: Setting Range

    21-1589.fm Page 9 Thursday, August 5, 1999 10:10 AM In an emergency, broadcast your “CLIP”: Call sign — identify yourself Location — be exact Injuries — number of injured, type of injuries, and so on Problem — give details. Give information calmly, clearly, and in as few words as possible 6.
  • Page 18 21-1589.fm Page 9 Thursday, August 5, 1999 10:10 AM In an emergency, broadcast your “CLIP”: Call sign — identify yourself Location — be exact Injuries — number of injured, type of injuries, and so on Problem — give details. Give information calmly, clearly, and in as few words as possible 6.

  • Page 19: Using The Weatheradio

    21-1589.fm Page 10 Thursday, August 5, 1999 10:10 AM USING THE WEATHERADIO In the USA, detailed weather infor- mation is continuously broadcast on 372 government weather stations. Each station broadcasts on 162.400, — 162.475, or 162.550 MHz. Most weather stations use frequency , but in locations where there might be interference between stations, the other two frequencies might be used.
  • Page 20 21-1589.fm Page 10 Thursday, August 5, 1999 10:10 AM USING THE WEATHERADIO In the USA, detailed weather infor- mation is continuously broadcast on 372 government weather stations. Each station broadcasts on 162.400, — 162.475, or 162.550 MHz. Most weather stations use frequency , but in locations where there might be interference between stations, the other two frequencies might be used.

  • Page 21: Cb Operation Tips

    21-1589.fm Page 11 Thursday, August 5, 1999 10:10 AM CB OPERATION TIPS Like most activities, CB radio use has its customs and courtesies. The fol- lowing tips will help you get the most enjoyment from your CB. COMMON USES FOR A CB RADIO Business Uses •...
  • Page 22 21-1589.fm Page 11 Thursday, August 5, 1999 10:10 AM CB OPERATION TIPS Like most activities, CB radio use has its customs and courtesies. The fol- lowing tips will help you get the most enjoyment from your CB. COMMON USES FOR A CB RADIO Business Uses •...

  • Page 23: Cb Courtesy

    21-1589.fm Page 12 Thursday, August 5, 1999 10:10 AM CB COURTESY • Wait for a pause in someone else’s transmission before you ask for a break. • If you do not receive an answer to your call after a second attempt, sign off and wait sev- eral minutes before trying again.
  • Page 24 21-1589.fm Page 12 Thursday, August 5, 1999 10:10 AM CB COURTESY • Wait for a pause in someone else’s transmission before you ask for a break. • If you do not receive an answer to your call after a second attempt, sign off and wait sev- eral minutes before trying again.

  • Page 25: Using Common 10-Codes

    21-1589.fm Page 13 Thursday, August 5, 1999 10:10 AM USING COMMON 10- CODES Citizen’s band operators have largely adopted the 10-codes for standard questions and answers. Their use permits faster communication and better intelligibility in noisy areas. This table lists the codes adopted by the Associated Public Safety Com- munications Officers (APCO).
  • Page 26 21-1589.fm Page 13 Thursday, August 5, 1999 10:10 AM USING COMMON 10- CODES Citizen’s band operators have largely adopted the 10-codes for standard questions and answers. Their use permits faster communication and better intelligibility in noisy areas. This table lists the codes adopted by the Associated Public Safety Com- munications Officers (APCO).

  • Page 27: Troubleshooting

    21-1589.fm Page 14 Thursday, August 5, 1999 10:10 AM TROUBLESHOOTING If your CB is not working as it should, follow the suggestions below to see if you can eliminate the problem. If you cannot, take the CB to your local Radio Shack store for assistance. Symptom...
  • Page 28 21-1589.fm Page 14 Thursday, August 5, 1999 10:10 AM TROUBLESHOOTING If your CB is not working as it should, follow the suggestions below to see if you can eliminate the problem. If you cannot, take the CB to your local Radio Shack store for assistance. Symptom...

  • Page 29: Reducing Noise

    • If problems persist, check your alternator/generator and regula- tor gauges. Noise from these sources can be reduced or elimi- nated using bypass capacitors at the various voltage points. Note: Your local Radio Shack store has a wide selection of noise-sup- pression equipment.
  • Page 30 • If problems persist, check your alternator/generator and regula- tor gauges. Noise from these sources can be reduced or elimi- nated using bypass capacitors at the various voltage points. Note: Your local Radio Shack store has a wide selection of noise-sup- pression equipment.

  • Page 31: Maintenance

    Your TRC-494 is an example of superior design and craftsmanship. The follow- ing suggestions will help you care for your TRC-494 so you can enjoy it for years. Keep the TRC-494 dry. If it gets wet, wipe it dry immediately. Liq- uids might contain minerals that can corrode the electronic cir- cuits.
  • Page 32 Your TRC-494 is an example of superior design and craftsmanship. The follow- ing suggestions will help you care for your TRC-494 so you can enjoy it for years. Keep the TRC-494 dry. If it gets wet, wipe it dry immediately. Liq- uids might contain minerals that can corrode the electronic cir- cuits.

  • Page 33: Replacing The Power Cord's Fuse

    21-1589.fm Page 17 Thursday, August 5, 1999 10:10 AM REPLACING THE POWER CORD’S FUSE The TRC-494’s 2-amp fuse helps protect your CB from power surges and short circuits. If the fuse is blown, replace it with a 2-amp, 250-volt, fast-acting fuse (Cat. No. 270-1052).
  • Page 34 21-1589.fm Page 17 Thursday, August 5, 1999 10:10 AM REPLACING THE POWER CORD’S FUSE The TRC-494’s 2-amp fuse helps protect your CB from power surges and short circuits. If the fuse is blown, replace it with a 2-amp, 250-volt, fast-acting fuse (Cat. No. 270-1052).

  • Page 35: Specifications

    21-1589.fm Page 18 Thursday, August 5, 1999 10:10 AM SPECIFICATIONS RECEIVER Frequency Coverage ...(CB) 26.965 to 27.405 MHz (Weatheradio) 162.400, 162.475, 162.550 MHz Sensitivity (Maximum) ... 0.25 uV Adjacent Channel Selectivity ..60 dB (at 10 kHz) Squelch ... 1 mV Audio Output ...
  • Page 36 21-1589.fm Page 18 Thursday, August 5, 1999 10:10 AM SPECIFICATIONS RECEIVER Frequency Coverage ...(CB) 26.965 to 27.405 MHz (Weatheradio) 162.400, 162.475, 162.550 MHz Sensitivity (Maximum) ... 0.25 uV Adjacent Channel Selectivity ..60 dB (at 10 kHz) Squelch ... 1 mV Audio Output ...
  • Page 37 21-1589.fm Page 19 Thursday, August 5, 1999 10:10 AM NOTES...
  • Page 38 21-1589.fm Page 19 Thursday, August 5, 1999 10:10 AM NOTES...
  • Page 39 Shack franchisees and dealers. Within this period, we will repair it with- out charge for parts and labor. Simply bring your Radio Shack sales slip as proof of purchase date to any Radio Shack store. Warranty does not cover transportation costs. Nor does it cover a product subjected to misuse or accidental damage.
  • Page 40 Shack franchisees and dealers. Within this period, we will repair it with- out charge for parts and labor. Simply bring your Radio Shack sales slip as proof of purchase date to any Radio Shack store. Warranty does not cover transportation costs. Nor does it cover a product subjected to misuse or accidental damage.

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