Kenwood TM-231A Instruction Manual

Also see for TM-231A: Instruction manual Instruction manual Instruction manual Instruction manual Instruction manual

2. SPECIFICATIONS AND ACCESSORIES2-1. SPECIFICATIONSModels TM-431ASpecifications TM-231A TM-231E TM-331A (U.S.A. versk )/TM-431A/431E TM-531A TM-531EFrequency range [MHz] | 144 t0 148 | 144 to 146 | 220 to 225 | 438 to 450 | 430 to 440 | 1240 to 1300Mode F3E (FM)Antenna impedance 500Power requirements 13.8 VOC +15% (11.7 to 15.8)Ground NegativeFrequency stability Less than +10 ppm Less than +3 ppmCurrent | Transmit mode Less than 11 A Less than 6.5 Al Less than 9.5A Less than 5.5 Adrain Receiver mode with no signal Less than 0.6 AOperating temperature — 20 °C to +60 °C (-4 °F to +140 °F}Dimensions (WxHxD) [mm] 140x 40x 160 (5-1/2” x 1-37/64” x 6-19/64")(Projection included) (141 x 42x 171 (5-9/16" x 1-21/32” x 6-47/64"})Weight {kg] 1.2 (2.65 Ibs)HI 50 W } 25 W 35 Ww 10WOutput | MID 10 W 10 W 10 Ww =power” | LOW Approx. 5 W Approx. 5 W Approx. 5 W TWModulation Reactance modulationSpurious radiation Less than — 60 dB Less than -50 dBMaximum frequency deviation +5 kHzAudio distortion (at 60% modulation) Less than 3% (300 to 3000 Hz)Microphone impedance 500 to 600 0Circuitry Double conversion superheterodyneIntermediate frequency 1st/2nd 10.7 MHz/455 kHz 30.825 MHz/455 kHz 59.7 MH2/455 kHzSensitivity (12 dB SINAD} Less than 0.16 4VSelec- -6 dB ___More than 12 kHztivity -60 dB Less than 24 kHz Less than 36 kHzSquetch sensitivity Less than 0.1 pVOutput (5% distortion) More than 2 W across 8 0 loadsExternal speaker impedance 8aLtodPe]=E@cs==ReceiverNotes:1. Circuit and ratings are subject to change without notice due to advancements in technology.2. * Recommended duty cycle: 1 minute Transmit, 3 minutes Reception.