General-Electric_3-5826A_(Service-Manual维修手册电器原理图)

GENERALELECTRICCITIZENS BANDSERVICE MANUALFEATURESMODEL 3-5826A80 Channel Single Side Band allows user to Receive andTransmit 80 S58 Channels or 40 AM CB channels forCB TRANSCEIVERgreater versatility.Clarifier Control assures fine tuningon receiver frequeney.Nitebright iluminated control panel for convenientnight time operationDual-Clarifier Control...5 to 1 ratio for fine VScoarse control for true fine tuning of receiver frequencyLighted S/RF meter ...shows relative ReceiveTransmit signal strengthNB (Noise Blanker)&ANL (Automatic Noise Limiterswitches to reduce ignition type noise.PA capability to monitor CB calls through PA speakeror use as PA system.Built-in Mic.Pre Amp-for modulation boost at lowvolume level●LED channel displayScrew-on type microphoneRemovable DC power cordQuick release mounting thumb screws from mountingbracket●Rf Gain ControlMOBILE SSBJacks for:External Speaker (BQ),PA Speaker (80),DC power cord-SINGLE SIDEBAND-SERVICESPECIFICATIONSGENERALTRANSMITTERCHANNELS:40 channels,PLL digital logic synthesizerFREQUENCY RESPONSE:400Hz to 2.5kHzcircuitry SSB-80FREQUENCY COVERAGE:26.965 to 27.405 MHz;40 channelsPOWER REQUIREMENT:Consumption 25 watts,current drain:and SSB 80 channels.1.8 amps (100%mod.)at 13.8 volt DCTRANSMIT POWER OUTPUT(RF[Rodio Frequencylpower to antenna):POWER SUPPLY:12 volts DC nominal negative ground4 watts maximum as limited by FCC Rules and Regulations at 13.8SEMICONDUCTORS:Integrated circuits,transistors and diodesvolt DC:nominal between 3.7 and 4 watts.OPERATING TEMPERATURE RANGE:-30 to+50PCMODULATION:Capable of 100%;factory pre-set limit 85-100%MICROPHONE:Dynamic with push-to-talk switch,500 ohmFREQUENCY TOLERANCE:Better than±，OO5%max,SWITCHABLE ANL (Automatic Noise Limiter)RECEIVERSWITCHABLE NB (Noise Blanker)SYSTEM:Single conversion Superheterodyne.SWITCHABLE PA (Public Address)SENSIVITY:AM-Better than .5uv for 500MW,SSB-.25uv for 500CONT ROLS:Volume with ON/OFF switch,squelch and PAMW audio power.control,RF Gain,clarifier,channel selector switchCLARIFIER:Min.1000,Max.2200 Hz.CONNECTORS:External speaker and PA jacks 3.5mm(8ohmsFREQUENCY COVERAGE:26.965 to 27,405 MHz.impedance),antenna receptacle to match PL-259 coax(50ADJACENT CHANNEL SELECTIVITY:Better than 60db.ohms impedance)SPURIOUS REJECTION:Better than 45db.CIRCUIT PROTECTIONS:Prevents transistor burn-out whenIF FREQUENCIES:10.695 MHz (AM)10.6935MHz (SSB).transmitting with open or loose antenna,3-amp fuse in DC powerSQUELCH RANGE (SENSITIVITY):0.5 to 2000 uV nominal.cordIMAGE REJECTION RATIO:Better than 55db.SIGNAL TO NOISE (S/N):Unsquelched;min.40 db,squelched;min.60 db.All Measurements at 25 C 13.8 VDC.CAUTION:THIS MANUAL IS DESIGNED FOR USE BY QUALIFIED ELECTRONIC TECHNICIANS ONLY.REPAIROR ADJUSTMENT OF TRANSMITTER CIRCUITS MUST BE UNDER SUPERVISION OF A PERSON WITH FIRST.OR SECOND-CLASS RADIOTELEPHONE LICENSE.CONSUMER USERS ARE URGED TO CONTACT QUALIFIEDFACTORY AUTHORIZED SERVICE FACILITIES FOR REPAIRS.AUDIO ELECTRONICS TECHNICAL SERVICES.UTICA,NEW