QUANZHOU RISEN RS-507M - Troubleshooting

Operating temperature range
-20℃ ～ +60℃
Antenna impedance
50Ω
Dimensions (W×D×H)
153mm×152mm×67mm
Weight (main unit)
742g (with microphone)
Transmitter
Output power
25W / 1W
Max. frequency deviation
±5.0 kHz
Spurious emissions
≤-70dB (H)
≤-56dB (L)
Adjacent channel power
≥70dB
Audio harmonic distortion
≤10%
Current drain
≤5.5A (H)
≤1.5A (L)
Input resistance
2kΩ
Receiver
Sensitivity
≤0.2uV
Squelch sensitivity
≤0.2uV
Adjacent channel selectivity
≥70dB
Spurious response rejection ratio
≥70dB
Intermodulation rejection ratio
≥70dB
Max. current
≤1.5A
Audio output power
≥4.5W (10%)
GPS signal ver.
NMEA0183-2.0
Output impendence
4Ω
TROUBLESHOOTING