TP660 Service Manual
Audio Response
+1dB ~ -3dB
Transmitting Specification
Frequency Stability
±1.5ppm
Tx Power
UHF: 1W/4W; VHF:1W/5W
Hum and Noise
[email protected]/-45dB@25kHz
Conductive Radiation Spurious
-36dBm@<1GHz
，
-30dBm@>1GHz
Adjacent Channel Power
，
70dB@25kHz
FM Modulation
[email protected],16K0F3E@25kHz
4FSK Modulation
12.5kHz
（
data only
）：
7K60FXD
12.5kHz
（
data + voice
）：
7K60FXE
Modulation Limit
±[email protected],±5kHz@25kHz
Audio Response
+1dB~-3dB
Audio Distortion
3%
（
typical
）
Vocoder Type
AMBE++
Digital Communication Protocol
ETSI TS 102 361-1, -2, -3
8. Maintenance and Test Equipment
During maintenance and adjustment, the major equipment and apparatus below will be used.
Equipment
Major Specification
RF Signal Generator
Frequency Range 10MHz-3GHz
Modulation Frequency modulation and external modulation
Output -127dBm/0.1uV-> 47dBm/1mV
Power Meter
Input Impedance
50Ω
Operation Frequency 100MHz-1000MHz
Measurement Range About 10W
Frequency Deviation
Meter
Frequency Range 100MHz -1000MHz
Digital Voltmeter
Test Range DC 10Mv-10V
Input Impedance The minimum circuit load high input impedance
Oscilloscope
30-100MHz
High Sensitivity
Frequency Range 100-1000MHz
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Summary of Contents for TP660
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