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11

• Contact friends or neighbors —

find out “what’s happening” or
plan a get-together. 

• Ever have car trouble or run out

of gas on the highway? What an
assurance it is to be able to
radio for assistance!

• Camping, fishing, and other

sports are more fun with a CB.
Locate a buddy or find out
“what’s cooking” back at camp.

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.

• Do not hold down the micro-

phone talk button when you are
not talking. (This is called 

dead

keying

.)

• Assist callers with directions,

information about road condi-
tions, and any other reasonable
requests.

Maximum Range

The maximum range and quality of
CB transmissions vary depending on
these conditions:

• The type and quality of antenna

used.

• The height of the antenna’s

mounting location — the higher
the antenna, the better the sig-
nal’s range.

• The surrounding terrain —

mountains and tall buildings limit
the range.

• Weather conditions.

• The number of nearby CBs

operating on the same channel.

• Standing wave ratio (SWR)

between the antenna and the
CB. You can check the SWR
between the CB and a mobile or
base-station antenna using an
SWR tester (Cat. No. 21-523).
Follow the instructions supplied
with the SWR tester and the
mobile or base-station antenna
to change the SWR, if neces-
sary.

21-1701.fm  Page 11  Thursday, August 5, 1999  12:50 PM

Summary of Contents for TRC-501

Page 1: ...Cat No 21 1701 OWNER S MANUAL 40 Channel 2 Way CB Radio Please read before using this equipment TRC 501 21 1701 fm Page 1 Thursday August 5 1999 12 50 PM...

Page 2: ...eference crystal Two Ceramic Filters provide su perior selectivity and prevent adja cent channel interference Hysteresis Squelch Circuit compensates for fading signals and eliminates signal chopping d...

Page 3: ...can lead to illegal operation as defined by Part 95 of FCC Rules Such illegal operation can lead to very serious consequences To be safe and sure Never open your CB s case Never modify your CB Your CB...

Page 4: ...eaker 7 Connecting Power 8 Using Vehicle Battery Power 8 Using the CB as a Base Station 8 Operation 9 Receiving Transmissions and Adjusting Squelch 9 Transmitting 10 CB Operation Tips 10 Common Uses f...

Page 5: ...ever pull on the microphone cable MOUNTING THE TRC 501 The most common mounting location for this CB is under a vehicle s dash board However if you use the TRC 501 as a base station you can place it o...

Page 6: ...the CB to the mounting bracket using the rubber wash ers and mounting knobs CONNECTING AN ANTENNA Caution To prevent damage to your CB you must connect an antenna to the CB before you operate it Selec...

Page 7: ...enna cable to the CB and connect the cable to the AN TENNA jack on the back of the CB Cautions Do not run the cable over sharp edges or moving parts Do not run the cable next to power cables or other...

Page 8: ...nection is for memory back up 3 Connect the CB s black wire to your vehicle battery s negative terminal or a metal part of the vehicle s frame that is not insulated from the frame by a plastic part Us...

Page 9: ...Note If the CB picks up unwanted partial or very weak transmissions turn SQUELCH clockwise to decrease the CB s sensitivity to these signals If you want to listen to a weak or distant station turn SQ...

Page 10: ...customs and courtesies The follow ing tips will help you get the most en joyment from your CB Common Uses for a CB Radio Business Uses Truck drivers and delivery per sonnel can learn road and traffic...

Page 11: ...sist callers with directions information about road condi tions and any other reasonable requests Maximum Range The maximum range and quality of CB transmissions vary depending on these conditions The...

Page 12: ..._ 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 Stand by 10 13 Report ____________ conditions 10 14...

Page 13: ...nnected to the CB The antenna cable is securely connected to both the antenna and the CB Trouble with transmission The CB is turned on The microphone is securely connected to the CB All connectors are...

Page 14: ...t or all of the noise goes away the problem is in your ve hicle s ignition or electrical system Here are a few hints to help you re duce or eliminate such noise Replace old ignition wires with new hig...

Page 15: ...cases and can cause the CB to work improperly Keep the CB away from dust and dirt which can cause premature wear of parts Wipe the CB with a damp cloth occasionally to keep it looking new Do not use...

Page 16: ...005 Follow these steps to check and re place each fuse if necessary 1 Make sure the power source and CB are both turned off 2 To open the fuse holder push the fuse holder ends together then turn eithe...

Page 17: ...to 27 405 MHz Output Power 4 Watts FCC Maximum Type of Modulation AM Double Sideband Full Carrier Modulation Modulation Capability 90 Spurious Emission 60 dB Frequency Tolerance 200 Hz Antenna Impedan...

Page 18: ...18 NOTES 21 1701 fm Page 18 Thursday August 5 1999 12 50 PM...

Page 19: ...19 21 1701 fm Page 19 Thursday August 5 1999 12 50 PM...

Page 20: ...r ranty does not cover transportation costs Nor does it cover a product subjected to mis use or accidental damage EXCEPT AS PROVIDED HEREIN RadioShack MAKES NO EXPRESS WARRANTIES AND ANY IMPLIED WARRA...

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