TRC-207 (210-1645) Specifications FaxbaCK dOC. # 6974 General Transmitter...........................Crystal Controlled PLL synthesizer, amplitude modulation Receiver............................Crystal controlled double conversion, superheterodyne system Communicating frequencies...........40 CB channels (26.965 to 27.405 MHz) Voltage operation................................12V DC (negative ground) Temperature and Humidity range...........-22ø F ~ + 140 øF(-30øC~ + 60øC) Transmitter/Receiver switching.................................Electrical Standard Test Conditions Battery supply voltage...........................................13.8V DC Modulation....................................................1000Hz, 30% Receiver output power.................................50mW at internal SP Receiver output impedance............................8 ohms non-inductive Ant. load impedance of transmitter..................50 ohms non-inductive Ambient conditions Temperature..........................................63øF~73øF(17øC~23øC) Humidity..........................................................40%~70% Transmitter Description.....................Nominal.............................Limit Frequency Coverage...................................26.965 to 27.405 MHz Power Input.................................5 W (at HIGH) 2.5 W (at LOW) Power Output....................................4W (at HIGH), 1W (at LOW) RF power output.................at High~ 4.0 watts 3.6 ~ 4.4 watts ................................at Low ~1 watts 0.7 ~ 1.3 watts Antenna spurious emission.............................-70dB 0.3~ 1.3watts Modulation capability...........+ 90%/-90%......................+80%/-80% (positive/negative) AMC Range at 1kHz...............40dB.................................30dB Frequency accuracy..............0.002%.............................0.005% Spurious radiation & Harmonic Signal radiation ratio.......-65dB...............................-60dB from fundmental Current consumption at no modulation.............at High~1000mA.....................1200mA at Low~600mA........................900mA at 80% modulation............at High~1600mA.....................1800mA at Low~800mA.......................1200mA Envelope distortion.............10% max. 1000Hz, 50% mod. Stability against variation.......................Satisfactory when dummy of antenna impedance antenna is varied from 40 ohms to 200 ohms. Type of Modulation.....................................................A3 Antenna Impedance.................................................50 ohms Current Drain............................................600mA to 1600 mA Receiver Description.....................Nominal.............................Limit Frequency Coverage.......................................26.965 to 27.405 Intermediate frequency 1st IF........................10.695MHz 2nd IF........................455kHz Sensitivity.......................................0.5uV for 10 dB (S+N)/N Sensitivity for 50mW output 0.3uV...............................1.0uV Sensitivity for 10dB (S + N)/N..0.7uV...............................1.0uV Adjacent channel rejection......60dB.................................50dB Image rejection (1st IF/2nd IF 70dB.................................50dB If rejection ratio .............60dB................................45 dB Signal-to-Noise ratio (1st IF/2nD IF) at 1mV input.................40dB.................................35dB Distortion at 1mV input 30% mod. (50 mW out)............3%..................................35 dB AGC Figure of merit.............80dB.................................70dB at 50 mV input Power Output at 1mV input Undistored (10% THD).........350mW...............................250mW Maximum......................450mW...............................350mW Electrical fidelity compared to 1000Hz 450Hz........................-6dB..............................-6+/-dB 2500 Hz......................-6dB...............................-6+/dB Cross modulation................50 dB............................+/-40 dB Squelch.........................60 dB............................60 +6 dB .....................................................Adjustable from 1 uV Current Consumption.............55 mA...............................100mA (at squelch) Battery low indicator...........9V................................8.1V~9V (LED ON) Audio Output............................................400 mW (10% THD) Current Drain.............................................55 mA to 550 mA Dimensions...........................7 1/2" x 2 3/4" x 1 3/4" (W x H x D) (184mm x 70mm x 44mm) Weight....................................................14.1 ozs (400g) Note: Nominal specs represent the design specs; all units should be able to approximate these-some will exceed and some may drop slightly below these specs. Limit specs represent the absolute worst condition which still might be considered acceptable; in no case should a unit fail to meet limit specs. (smm 03/04/94)