Service Manual

24
Main Technical Specifications
Frequency range 450 MHz ~470 MHz
Channel 16
Channel space 25kHz / 12.5kHz
Antenna impedance 50
Transmitter
impedance
2K&
Input voltage 7.2V DC
Frequency stability ±2.5×10
-6
Transmitter
Frequency stability ±2.5×10
-6
Output power 4.0±0.5W
Operating sensitivity 12±3mV
Audio distortion  5%
Modulation limiting  5kHz / 2.5kHz
Bandwidth  16 kHz/8kHz
Modulate specialty  '3dB
Spurious RF  7.5(W
Adjacent power  -65 d B / -55dB
Receiver
Reference sensitivity Precede 0.28(V / 0.35(V
Squelch turnon
sensitivity
 0.4(V
Audio frequency 500mW
Audio deviation  7%
Operating bandwidth  "±7 kHz"/"±3.5 kHz"
Audio response  +2dB -8dB
Channel restrain  -8 d B
Obstruct  85d B
Selectivity  65 d B / 60dB
Spurious response  60 d B
Intermodulation  60 d B