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Your UNIDENModel SUNDOWNER UH-O77represents the most advanced Mobile Sta- ... or passenger inthe vehicle. ... Do not advance the control too far, or.
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UHF CB TRANSCEIVER

OWNER'S

MANUAL

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DESCRIPTION Your UNIDENModel SUNDOWNER UH-O77 represents the most advanced Mobile Station type radio ever designed for use in the Citizens Band Radio Service. Itwilloperate on any of the 40 frequencies designated as citizens band channels by the Department of Communications. Your Model SUNDOWNER UH-O77features a frequency synthesizing circuit with PHASE LOCK LOOP techniques to assure ultraprecise Frequency control. This radio has been Type Accepted and Type Certified by the D.O.C. WARNING Before transmitting with your transceiver, you must obtain a Department of Communications (D.O.C.) Citizens Radio Licence. Obtain an application form from the D.O.C.Beforecompletingthe formyou shouldreadthe conditionsgoverningthe licensingand operationoftheC.R.S. (D.O.C. brochure RB250). This brochure also can be obtained fromthe D.O.C.Aftercompletingthe applicationform,mailitwith the appropriate fee to the Superintendant Regulatory of Licensing in the State or territory"in which the station will be operated.

CHANNEL INFORMATION This radio has been designed to provide high level performance in the Citizens Band Radio Service, which is comprised of the following frequency assignments: Channel 1 2 3 4 5 6 7 8 9 10 11 12 13 14

Channel Frequency in MHz 476.425 476.450 476.475 476.500 476.525 476.550 476.575 476.600 476.625 476.650 476.675 476.700 476.725 476.750

Channel 15 16 17 18 19 20 21 22 23 24 25 26 27 28

Channel Frequency in MHz 476.775 476.800 476.825 476.850 476.875 476.900 476.925 476.950 476.975 477.000 477.025 477.050 477.075 477.100

Channel 29 30 31 32 33 34 35 36 37 38 39 40

Channel Frequency inMHz 477.125 477.150 477.175 477.200 477.225 477.250 477.275 477.300 477.325 477.350 477.375 477.400

DUPLEX OPERATING FREQUENCIES CHANNEL CH1 CH2 CH3 CH4

RX 476.425 MHz 477.175 476.450" 477.200 476.475" 477.225 476.500" 477.250

CHANNEL

TX MHz .. .. ..

CH5 CH6 CH7 CH8

(CH31) (CH32) (CH33) (CH34)

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TX

RX 476.525 476.550 476.575 476.600

MHz 477.275 " 477.300 " 477.325 " 477.350

MHz .. .. ..

(CH35) (CH36) (CH37) (CH38)

INSTALLATION MOBILE STATION INSTALLATION Plan the location of the transceiver and microphone bracket before starting the 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 some solid face, using the mounting bracket and self-tapping screws which are provided.

MOBILE STATION ANTENNA Since the maximum allowable power output of the transmitter is limited by the D.O.C., the antenna is a very important factor affecting transmission distance. It is for this reason that we strongly recommend that you install only a quality antenna in your new citizens band system. You have just purchased a superior transceiver. Don't diminish its performance by installing an inferior antenna. Only a properly matched antenna system will allow maximum power transferfrom the 50ohm transmission line to the radiating element. 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 ante