TM-271A
AMATEUR MOBILE FM TRANSCEIVER

 
SPECIFICATIONS
 TM-271A
GENERAL
Frequency Range Guaranteed Range: TX/RX 144 ~ 148 MHz
Operational Range: TX/RX 136 ~ 174 Mhz
Mode F3E (FM)
Power requirement 13.8 V DC ± 15%, negative ground
Current Drain
Transmit
Receive		  
less than 13.0A (High), less than 8.0A (Low)
less than 1.0A
Operation Temperature Range -20°C ~ +60°C
Antenna Impedance 50 Ohm
Microphone Impedance 600 Ohms
Frequency Tolerance ±2 ppm (-20°C ~ +60°C)
Dimensions (W x H x D)
(projections included)		 160 x 43 x 137 mm
Weight 1.2 Kg
TRANSMITTER
RF Output Power
HIGH:
LOW: 		 
60 W
25 W (approx.)
Modulation Reactance modultaion
Max. Frequency Deviation ± 5 KHz
Modulation Distortion less than ± 3% (300Hz ~ 3 KHz)
RECEIVER
Circuitry Double Conversion Superheterodyne
Intermediate Frequency
1st IF
2nd IF		  
49.95 MHz
450 KHz
Sensitivity
12 dB SINAD		 less than 0.18 µV (narrow: less than 0.22µV)
Squelch Sensitivity less than 0.1 µV
Selectivity
- 6 dB
- 60 dB		  
more than 12 Khz (narrow: > 10 Khz)
less than 30 Khz (narrow: < 24 Khz)

 

Applicable MIL-STD

MIL-STD 810C 810D 810E 810F
Vibration 514.2/VIII,X 514.3/I 514.4/I 514.5/I
Shock 516/I,II,V 516.3/I,IV 516.4/I,IV 516.5/I,IV