FP520 Service Manual
Page 25 of 64
Receiving working current: <=400mA
4). QT/DQT decode: <= -116dBm (0.35uV) (broad band, narrow band) the radio could decode correctly.
5).Sensitivity of squelch-off
：
the RF input
≤ -124dBm
，
the squelch feature should be disabled.
6). Sensitivity of squelch-on: the RF input
≥- 119dBm
，
the squelch feature should be enabled.
B. Transmitting part
1). Output power
：
High (3.5W---8W); low (0.3W---0.7W)
2). Transmitting current: High power transmitting <= 1.6A; low power transmitting <=1.0A
3). The maximum frequency deviation
：
3.8 kHz---4.8 kHz (broad band)
1.8 kHz---2.5 kHz (narrow band)
4). Distortion of transmitting
：
<=5%
5). QT/DQT frequency deviation
：
0.5---0.85 kHz (broad band); 0.3---0.5kHz
（
narrow band
）
; with a good wave.
6). Transmitting frequency deviation
：
nominal fre/-500Hz
7). DTMF frequency deviation: 3
～
4kHz (broad band)/1.5
～
2.0 kHz(narrow band)
8). FFSK frequency deviation: 3
～
4kHz (broad band)/1.5
～
2.0 kHz(narrow band)
9). Under voltage indication
：
The voltage is set as 6.6V, and the red light flashes without the transmitting power
when press the PTT button.
Chapter 7 Major Specifications
7.1 General Specification
Model
FP520
Frequency
(400 ~ 470) MHz
(136 ~ 174) MHz
Modulation Method
4FSK
Channel Capacity
32 (two zones)
Channel Spacing
12.5kHz
Intermediate Frequency
The first intermediate frequency
：
51.65MHz; the second intermediate frequency
：
450kHz
Voltage
7.5V negative pole is connected to the ground
Temperature
-25
℃
~ +55
℃
Antenna Impedance
50Ω
Microphone Impedance
2.2kΩ
Battery (Standard)
Li-ion battery DC 7.4V , 1500mAh
，
duration
：
12.5 hours
Dimension
118.2mm x55.7mmx32.9mm (width×height×thickness)
Weight
250
（
with battery and antenna
）
Summary of Contents for FP520
Page 1: ... 键入文档副标题 gh 选取日期 在此处键入文档的摘要 摘要通常是对文档内容的简短总结 在此处键入文档的摘要 摘要 通常是对文档内容的简短总结 ...
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 ...
