User Manual  CM70
Page 3 of 68 
Specifications
General 
Channels………………………………………..………...……………………………......….   40 Ch AM/FM 4W 
Frequency Range….………………………………….………….…...…………..….26.565 to 27.99125 MHz 
Frequency Control……………………………………………….……………………………..…………………PLL 
Operating Temperature Range……………………………………………..………………….….-10
C
DC Input Voltage……………………...…………………………………...………..............…13.2 V DC 
15% 
Size…………………………………….………………………………………..….182(L) X 37(H) X 139(D) mm 
Weight…………………………………………………………………………………...……………………0.850 kg 
Receiver
Receiving System…………………………………………………….….Dual Conversion Super Heterodyne 
Intermediate Frequency……………………………….…….……….1
st
 IF: 10.695 MHz, 2
nd
 IF: 455 MHZ 
Sensitivity………………………………………………..……………….0.5 
V for 20 db SINAD in FM mode 
Audio Distortion………………………………………………………………………….Less than 8% @ 1 KHz 
Image Rejection………………………………………………………………………………………………...65dB 
Adjacent Channel Rejection………………………………………………………………………………….65dB 
Signal/ Noise Ratio……………………………………………………………………………………………..45dB 
Current Drain at standby……………………………………..……………….……………………….....250 mA 
Current Drain at maximum audio…………………………….…………………………………………650 mA 
Transmitter 
Output Power…………………………………………………………………………..……...….4W @ 13.2 V DC 
Modulation…………………………………………………..……………………...………FM: 1.8 KHz 
0.2 KHz 
Frequency response……………………..……………..…….………………..……...From 400 Hz to 2.5 KHz 
Output impedance……………………………………………………...…………………RF 50 ohm Unbalance 
Signal/ Noise Ratio……………………………………………………………….……………………..40 dB MIN 
Current Drain……………………………………………………………………………….……………….1200 mA 
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