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8

Using the Instant  

Channel 9 

feature

 

Press the 

CH9

 button; the radio automatically 

tunes to channel 9. 

 

Press the 

CH9

 button again to return to the 

previous channel.

NOTE: Make sure you read and understood part 95 of the FCC rules 

and regulations before using the transmitter. 

Maintenance

Every six to twelve months, check to make sure that...

 

► The Voltage Standing Wave Ratio (VSWR) is less than 2:1.

 

► All electrical connections are secure and free of corrosion.

 

► The antenna cable shows no wear or damage. 

 

► All mounting screws are securely fastened.

4. 

Inspect all screws and other mounting hardware.  

If your radio is not performing to your expectations, please try these 

simple steps. If these steps don’t solve your problem, call the Uniden 

Customer Service Center. 

Problem:

Things to try:

Radio won’t turn 

on (no power) 

1. Check the radio’s power cord and all connections.

2. Check the fuse in the radio’s power cord.

3. Check your vehicle’s electrical system.

Poor reception

1. Adjust the squelch level.

2. Check the antenna, cable and connectors.

3. Check operation mode of the radio.

Background noise 1. Adjust the squelch level.
Weak 

transmission

1. Check the antenna, cable and connectors.

2. Check the antenna grounding.

3. Check for corrosion on the connectors.

PA won’t 

broadcast

1. Check the CB/PA toggle is set to PA.

2. Check the mike’s PTT button is pressed in when you talk.

Service and repair information

 

► Service, repair, or alignment should only be attempted by a qualified 

and/or licensed radio technician. 

 

► When ordering parts, it is important to specify the correct model 

number of this radio. 

 

► It is the user’s responsibility to make sure the radio is operating in 

accordance with the FCC Citizens Radio Service regulations at all 

TROUBLESHOOTING

Summary of Contents for PRO505XL

Page 1: ...PRO505XL Professional Mobile CB Radio 2013 Uniden America Corp Printed in Vietnam Irving Texas U01UT386ZZA 0...

Page 2: ...standard s Operation is subject to the following two conditions 1 this device may not cause interference and 2 this device must accept any interference including interference that may cause undesired...

Page 3: ...rts Department 800 554 3988 need special assistance due to a disability Accessibility Help Line 800 874 9314 voice or TTY During regular business hours Central Standard Time Visit our website for deta...

Page 4: ...squelches or suppresses weak radio signals NOTE FCC rules reserve Channel 9 for motorist assistance and other emergency communications Channel 9 should only be used in situations where there is immed...

Page 5: ...ndard 12 volt DC power source with either a positive or negative ground If you don t know whether your power supply uses a positive or negative ground consult the manual for your power supply or conta...

Page 6: ...r CAUTION Never operate your radio with no antenna or with a damaged antenna cable This can damage the radio You will need to purchase an antenna to operate the radio There are two basic types of mobi...

Page 7: ...to increase the volume turn it counter clockwise to decrease the volume Transmitting Tune the radio to the channel you want to transmit on and listen to make sure the channel is clear Press and hold...

Page 8: ...hings to try Radio won t turn on no power 1 Check the radio s power cord and all connections 2 Check the fuse in the radio s power cord 3 Check your vehicle s electrical system Poor reception 1 Adjust...

Page 9: ...dulation Class B amplitude modulation Freq Response 300 2500 Hz Output Impedance 50 ohms unbalanced Receiver Sensitivity 0 8 V for 10 dB S N N typical limit 1 6 V Selectivity 6 dB 7kHz 70 dB 10kHz typ...

Page 10: ...th the performance of this warranty Warrantor at its option may replace the unit with a new or refurbished unit THE LIMITED WARRANTY SET FORTH ABOVE IS THE SOLE AND ENTIRE WARRANTY PERTAINING TO THE P...

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