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PRO 640XL
Professional Mobile CB radio
OWNER'S MANUAL
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---~ l 1 Welcome! Tothe wortdof sophisticated, miCroprocessorcontrolled CB radio communications. Your Uniden PRO 640XL represents the most advanced mobile radio ever designed for use in the Citizens Band Radio Service. It will operate on any of the 40 AM, 40 USB or 40 LSB frequencies authorized by the Department of Transport and Communications (DOTAC). Your PRO 640 XL features a superheterodyne circuit with PHASE LOCKED LOOP techniques to assure precise frequency control. This radio has been typ
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~ ~~. -- 1< 1. MIC GAIN - Adjusts the modulation of the mic for crisp, clear transmission. 2. ANL/NB KEY - Youcan select Noise Blanker and Automatic Noise Limi- ter or all filters OFF. TheANL/NB helps to reduce harsh background noise caused by a variety of interference sources. 3. DIM KEY- The dimmer adjusts the front panel lights for optimum viewing. 4. INSTANT CH 9 and 19 - Press these keys to instantly select either channel. Press again to return to normal 40 channel operation. 5. TXand RXIND
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--- --- I Controls and Functions '" 13. VOLUME CONTROL - Rotate clockwise to turn radio on and to increase volume. 14. SWR KEY - Press to read the Standing Wave Ratio of your antenna. The SWRLEDwill light when the SWRkey is pressed. 15. HI CUTKEY - Press to reduce the high frequency response of the receiver. This key can be used to help eliminate the hiss and pop of weak signal reception. . 16. PA KEY- Press this switch to the PublicAddress mode when an external PA speaker is connected. When the
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i R1. ANTENNA CONNECTOR - This female connector permits connection of the transmission line cable male connector (Pl-259J to the transceiver. R2. PUBLICADDRESS - An external 4 ohm 7-watt speaker must be connected to the "PASP"jack located on the back of the unit. The speaker must be directed away from the mic to prevent feedback. R3. EXTERNAL SPEAKER - The "EXT.SP."jack isused for remote monitoring. The external speaker should have a 4 ohm impedance and be rated at least 7 watts. When an externa
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Mobile Installation Plan the location of the radioand microphone bracket before starting installation. Select a location that isconvenient 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 output of the transceiver is limited by the DOT AC, the antenna is a very important factor affecting t
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.....-.... l 0 erating.Procedure . TO RECEIVE 1. Be sure that the power source, antenna and microphone are properly connected. 2. ~urn the unit on by rotating the Volume control clockwise. 3. S~t the channel selector switch to the desired channel. 4. Set the Volume control to a comfortable listening level. 5. listen to the background noise from the speaker. Turn the Squelch control clockwise until the noise disappears (no signal should be present). leave the con- trol at this setting. The squelc
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I~ I Trou bleshooti ng Ifyour PRO 640XL is not performing up to your expectations, please try these simple steps. Ifyou still cannot get satisfactory results after reading this manual and following the trouble shooting steps, please call Uniden Australia Pty. Ltd. at (02) 599-3100. Trouble Check Unit will not turn on. 1. Check power cord and all connections. No power. 2. Check power cord fuse. 3. Check vehicle electrical system. Poor reception 1. Check and adjust Squelch 2. Check antenna system
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Specifications Channels: 40 AM, 40 USB,40 LSB 26.965 to 27.405 MHz Frequency Range: Phase Locked Loop (PLL)synthesizer Frequency Control: :t 0.005% Frequency Tolerance: - lQoCto +50°C Operating Temp.: Microphone: Plug in type: dynamic Input Voltage: 13.8 VDC nom. (+ or - ground) Current Drain: TX:full mod., 3.0A RX:with max audio output, 1.2A Size: 67/8" W x 8 1/4" 0 x 2"H 3 lb. 2 oz. Weight: Antenna Connector: UHF, SO-239 LEDMeter: Indicates relative RFoutput and received sig- nal strength and
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.~. -- :0:: ~~~..- WARRANTY Uniden PRO 640XL 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 this warranty. Its PRO 640XL CB Radio (hereinafter referred to as the Product), to be free from defects in materials and aaftsmanship with only the limitations or exclusions se
