Bộ đàm cầm tay Hongda HD-620
·Technical Index
Frequency Range VHF136-174MHz
UHF400-470MHz
Rated Voltage DC 7.2V 
Memory Channel 16
Channel Spacing 12.5KHz/25KHz
Frequency Sensitivity ±2.5PPM
Antenna Impedance 50Ω
Dimension 115*59*34mm
·TRANSMITTER
Output Power ≤5W
Current ≤800mA
Modulation Distortion <5%(300-3000Hz)
Maximum Frequency Deviation ≤5KHz
CTCSS Frequency Deviation 0.75KHz±50Hz
Spurious Radiation ≤7uW
Modulation Mode 16KøF3E
Remanent Radiation ≤-35dB
·RECEIVER
RF Sensitivity ≤0.25uV
Silent Sensitivity ≤0.2uV
Audio Frequency Power ≥500mW
Audio Distortion <5%
Modulation Receiver Bandwidth ±7KHz
Spurious Rejection ≥55dB
Selectivity ≥65dB
Intermodulation ≥60dB

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