FP520 Service Manual
Page 30 of 64
Appendix 1 Abbreviation
AMP Amplify, Amplifier
ANT Antenna
APC Automatic Power Control
BPF Band Pass Filter
CTCSS Continuous Tone Control Squelch System
DCS Digital Code Squelch
DEMOD Demodulation
E
2
PROM Electrically Erasable Programmable Read-Only Memory
HPF High Pass Filter)
IDC Instantaneous Deviation Control
IF Intermediate Frequency
LED Light-Emitting Diode
LNA Low Noise Amplifier
LPF Low Pass Filter
MCU Micro Control Unit
MIC Microphone
MOD Modulation
MONI Monitor
PLL Phase-Lock Loop
PTT Push-To-Talk
RX Receiver
SPK Speaker
TCXO Temperature Control Oscillator
TX Transmitter
UL Un-Lock
VCO Voltage Control Oscillator
Summary of Contents for FP520
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Page 44: ...FP520 Service Manual Page 43 of 64 Figure 1 FP520 01 Mainboard Schematic Diagram 136 174MHz ...
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Page 54: ...FP520 Service Manual Page 53 of 64 Figure 4 FP520 02 Mainboard Schematic Diagram 400 470MHz ...
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Page 64: ...FP520 Service Manual Page 63 of 64 Figure 7 KBC 51 7 4V Electrical Schematic Diagram ...