Uniden PC122XL User's Manual
Contents
1. uniden PC122XL o ii OWNERS MANUAL Dass WELCOME To the world of sophisticated microprocessor controlled AM SSB radio communications Your Uniden PC122XL represents one of the most advanced mobile type radio ever designed for use in the Citizens Band Radio Service It will operate on any of the 40 AM frequencies and Upper and Lower Side Band Frequencies designated by the Department of Transport and Communications DOTAC Your PC 122 XL features a frequency synthesizing circuit with PHASE LOCK LOOP techniques to assure precise frequency control This radio has been type accepted and certified by tha DOTAC WARNING Before transmitting with your transmitter you must obtain a Department of Transport and Communications Citizens Band Radio Service CBRS License Obtain a brochure and a CBRS License Application form in your nearest DOTAC office Mail the completed application form and the appropriate fee to the Superintendent Regulatory of Licensing in the State of Territory in which the station will be operated MOBILE INSTALLATION Plan the location of the radio and microphone bracket before starting installation Select a location that is convenient for operation and does not interfere with the driver or passenger in the vehicle The radio should be securely fastened to a solid surface using the mounting bracket and self tapping screws which are provided MOBILE ANTENNA Since the maximum allowable power o2. synthesizer 0 005 ground TX AM full mod 2 2 A SSB 12 watts PEP out put 2A RX AM amp SSB with max audio output 0 6 A 6 W x 71 D x 2 H 2 Ib 10 oz UHF SO 239 diodes Indicates relative power output and receive signal strength AM maximum of 4W SSB maximum of 12W PEP Class B amplitude modulation SSB 3rd and Sth order better than 25dB 7th and 9th order better than 35dB Better than 55dB Unwanted Sideband Freq Response Output Impedance SSB Filter RECEIVER Sensitivity Selectivity Cross Modulation Image Rejection I F Frequency Automatic Gain Control squelch Clarifier Audio Output Power Freq Response Distortion Internal Speaker External Speaker PA System Better than 50dB 300 3000 Hz 50 ohms unbalanced 10 695 MHz 8 pole monolithic type 6dB 4 2KHz 60dB O 7 0KHz SSB Better than 25 uV for 10dB S N N O greater than 1 2 watt of audio output AM Bet ter than 5 uV for 10 dB S N N greater than 1 2 watt of audio output SSB and AM 6dB 4 2 KHz 60dB O 7 0KHz More than 50dB More than 75dB AM and SSB 10 695 MHz AGC less than 10dB change in audio output for inputs from 10 to 500 000 microvolts Adjustable threshold less than 5 uV 11 5KHz 3 watts into 8 ohms 350 to 2500 Hz Less than 10 at 3 watts output 16 ohms round not supplied 8 ohms
3. 3 watts in external 8 ohm speaker WARRANTY Uniden PC122XL CB Radio Australian 2 Year Warranty Accessories are covered for 90 Days only Note Please keep your sales docket as it provides evidence of warranty WARRANTOR Uniden Australia Pty Ltd ELEMENTS OF WARRANTY Uniden warrants to the original retail owner for the duration of _ yo this warranty its PC122XL CB Radio hereinafter referred to as the Product to be free from defects in materials and craftsmanship with only the limitations or exclusions set out below WARRANTY DURATION This warranty to the original user only shall terminate and be of no further effect Two 2 Years after the date of original retail sale This warranty will be deemed invalid if the product is A Damaged or not maintained as reasonable and necessary B Modidfied altered or used as part of any conversion kits subassemblies or any configuration s not sold by Uniden C Improperly installed D Repaired by someone other than an authorised Uniden Repair Agent for a defect or malfunction covered by this warranty E Used in conjunction with any equipment or parts or as part of a system not manufactured by Uniden F Installed programmed or serviced by anyone other than an authorised Uniden Repair Agent G Where the Serial Number label of the product has been removed or damaged beyond recognition PARTS COVERED This warranty covers for 2 years the Transceiver and Microphone only
4. All accessories Leads Brackets Clips Screws etc are covered for 90 days only STATEMENT OF REMEDY In the event that the product does not conform to this warranty at any time while this warranty is in effect the warrantor will at its discretion repair the defect or replace the product and return it to you without chrge for parts or service THIS WARRANTY DOES NOT COVER OR PROVIDE FOR THE REIMBURSEMENT OR PAYMENT OF INCIDENTAL OR CONSEQUENTIAL DAMAGES WARRANTY CARD If a warranty card had been included with this product then please fill it in and return it to us within 14 days of purchase Your name and the serial number of the product will then be registered in our database and this will help us to process your claim with greater speed and efficiency should you require warranty service PROCEDURE FOR OBTAINING PERFORMANCE OF WARRANTY In the event that the Product does not conform to this warranty the Product should be shipped or delivered freight pre paid with evidence of original purchase eg a copy of the sales docket to the warrantor at UNIDEN AUSTRALIA PTY LTD SERVICE DIVISION 345 Princes Highway Rockdale Sydney NSW 2216 Ph 02 599 3100 Fx 02 599 3278 Customers in other States should ship or deliver the Product freight pre paid to their nearest Uniden Authorised Repair Centre Contact Uniden for the nearest Warranty Agent to you Adelaide 08 365 2588 Brisbane 07 290 1188 Melbourne 03 335 4322 Perth
5. 09 227 6386 UTUAO1549DC Copyright 1992 Uniden Australia Pty Ltd Printed in the Philippines
6. ROLS AND FUNCTIONS e i F ia A 4 A O a 4 A e FO om nm A bet mi F a a b Ar pp ot J nm SQUELCH The squelch control is used to eliminate background noise during the absence of a transmission Turn the control fully counterclockwise then slowly rotate it back clockwise until all noise disappears At this setting any transmission must be slightly stronger than the background noise to Break Squelch or to be heard Further clockwise rotation will increase the threshold at which a signal will be heard You can select any level to Break Squelch S RF METER This LED meter shows the relative strength of the received signal or transmit power CHANNEL INDICATOR Displays the channel currently in use 4 CHANNEL SELECTOR This switch selects the desired channel for transmission and reception All channels except channel 9 may be used for communications between stations operating under different license Channel 9 has been reserved by the DOTAC for emergency communications involving the immediate safety of individuals or the immediate protection of property This is the DOTAC rule and applies to all operators of CB radios 5 TX INDICATOR An LED lights to indicate when the radio is transmitting 6 MICROPHONE The operational mode of the CB is controlled by the push to talk switch on the microphone Press the switch to activate the transmitter and disable the receiver Release the switch to en
7. able the receiver and disable the transmitter When transmitting hold the microphone about 2 inches from your mouth and speak clearly in a normal voice The microphone included with the PC122XL is a detachable low impedance dynamic type RF GAIN This control is used to adjust signal reception in areas where strong signals are present Turn the control fully clockwise for maximum reception VOLUME CONTROL Rotate clockwise to turn radio on and to increase volume g 10 11 12 13 14 15 16 NB ANL SWITCH You can select either Noise Blanker and Automatic Noise Limiter only Automatic Noise limiter or all filters OFF The NB and ANL help to reduce harsh background noise caused by a variety of interference sources The ANL will not work in the USB or LSB mode PA SWITCH Move this switch to the Public Address mode when an external PA speaker is connected When the PA mode is selected you can use the PA function and yet can monitor CB incoming signals Adjust the PA output level by rotating the volume control AM SSB SELECTOR The three position switch allows you to select AM standard 40 channel CB or USB Upper Side Band or LSB Lower Side Band operation CLARIFIER Turn this control to achieve the best tuning of the upper or lower side band receiving frequency ANTENNA CONNECTOR This female connector permits connection of the transmission line cable male connector PL 259 to t
8. ground systems or the black lead for positive ground systems to the ignition switch accessory terminal so that the radio is auto matically turned off when the ignition switch key is turned off Alternately the power lead may be connected to an available terminal on the fuse block or even to a point in the wiring harness Care must be taken however to guard against a short circuit condition When in doubt please contact your vehicle dealer for specific information for your vehicle GROUND INFORMATION A negative ground system is generally identified by the battery terminal being connected to the vehicle motor block but if you cannot determine the polarity of your vehicle consult your vehicle dealer for information NOTE This radio may be installed and used in any 12 volt DC negative or positive ground system NEGATIVE GROUND SYSTEM If you are operating on a negative ground system connect the red DC power cord from the radio to the positive battery terminal or other convenient point and connect the black power lead to the chassis or vehicle frame or the negative terminal of the battery POSITIVE GROUND SYSTEM If you are operating on a positive ground system connect the black DC power cord from the radio to the negative battery terminal or other convenient point and connect the red power lead to the chassis or vehicle frame or the positive terminal of the battery CONT
9. he transceiver PUBLIC ADDRESS An external 8 ohm 4 watt speaker must be connected to the PA SP jack located on the back of the unit The speaker must be directed away from the microphone to prevent feedback EXTERNAL SPEAKER The external speaker jack is used for remote receiver monitoring The external speaker should have an 8 ohm impedance and be rated at least 4 watts When an external speaker is connected the internal speaker is disabled POWER This plug permits connection of the DC power to the transceiver The supplied DC Cord s plug is polarized which ensures that power will always be connected and fused properly OPERATING PROCEDURE TO RECEIVE q E 0 NO Be sure that the power source antenna and microphone are properly connected Turn the unit on by rotating the Volume control clockwise Set the channel selector switch to the desired channel Set the Volume control to a comfortable listening level Listen to the background noise from the speaker Turn the Squelch control clock wise until the noise disappears no signal should be present Leave the control at de O this setting The squelch is now properly set The receiver will remain quiet until a signal is actually received Do not advance the control too far or some weaker signals will not be heard OPERATING PROCEDURE TO TRANSMIT 1 Select the desired channel for transmission 2 If the channel is clear depress the push to tal
10. k switch on the side of the micro phone and speak in a normal voice CAUTION The transceiver Voltage Standing Wave Ratio V S W R measurement must be performed prior to the use of the transmitter A V S W R ratio in excess of 2 1 may damage the transmitter OPERATION OF SSB Choose the desired side band frequency by A select standard channel 1 40 B select Upper or Lower side band by moving AM SSB switch Transmit or receive according to previous instructions When receiving a side band transmission you may need to use the Clarifier control to fine tune that frequency Rotate the Clarifier clockwise or counterclockwise for optimum reception PREVENTATIVE MAINTENANCE At six to twelve month intervals the following system checks should be made 1 Check the Standing Wave Ratio V S W R 2 Inspect all electrical connections 3 Inspect antenna coaxial cable for wear 4 Inspect all screws and other mounting hardware TROUBLE SHOOTING If your PC122XL is not performing up to your expectations please try these simple steps If you still cannot get satisfactory results after reading this manual and following the trouble shooting steps you may need to have your unit serviced trouble check Check power cord and all connections Check power cord fuse Check vehicle electrical system Check and adjust Squelch Check antenna system and cable connectors Check operation mode of the radio U
11. nit will not turn on No power Poor reception Check antenna system and cable connectors Check antenna grounding Check for corrosion on connectors Weak transmission CO M Lo bd Wh If you determine that service is necessary contact your local dealer or pack the unit in its original carton Send it along with a brief concise description of the problem your name address phone number and a copy of the original purchase receipt to the address listed in the warranty SERVICING YOUR CB It is the user s responsibility to see that this radio is operating at all times in accordance with the DOTAC Citizens Band Radio Service regulations We highly recommend that you consult a qualified radiotelephone technician for service and alignment of this radio When ordering parts it is important to specify the correct model number and serial number of this radio Please refer to the WARNING information on the first page of this manual SPECIFICATIONS GENERAL Channels 40 AM 40 USB 40 LSB Frequency Range Frequency Control Frequency Tolerance 10 C to 50 C Plug in type dynamic 13 8 VDC nom or Operating Temp Microphone Input Voltage Current Drain Size Weight Antenna Connector 41 transistors 7 IC 49 Semiconductors LED Meter TRANSMITTER Power Output Modulation Intermodulation Distortion SSB Carrier Suppression 26 965 to 27 405 MHz Phase Lock Loop PLL
12. utput of the transceiver is limited by the DOTAC the antenna is a very important factor affecting transmission distance Itis for this reason that we strongly recommend that you install only a quality antenna in your new CB radio system You have purchased a superior quality transceiver Don t diminish its perform ance by installing an inferior antenna Only a properly matched antenna system will allow maximum power transfer from the 50 ohm transmission line to the radiating element We recommend that you use an SWR meter when installing your antenna Set your PC122XL to channel 20 and adjust to SWR 1 Your UNIDEN dealer is qualified to assist you in the selection of the proper antenna to meet your application requirements For automobile installation the whip antenna may be used with good effect The most efficient and practical installation is a full quarter wave whip antenna mounted on the rear deck or fender top midway between the rear window and bumper A short loaded whip antenna is more convenient to install on your automobile although the efficiency is less than a full quarter wave whip antenna For marine installation consult your dealer for information regarding an adequate grounding system and prevention of electrolysis between fittings on the hull and water E _CONNECTING THE POWER CORDS With regard to the connection of the power cords it may be possible or desirable to connect the red lead for negative
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