9.
低电告警 Low Battery Voltage Warning
When the battery voltage is 3.3v, the radio voice prompts: "charge battery". When
the battery voltage is 3.1v, the radio is forbidden to transmit.
11、扫描 Scan
In standby mode, Press and hold the 【UP】 and 【DOWN】 keys for 2s to start scanning,
and press any key to stop scanning.
12、发射 DTMF Transmit DTMF
Press and hold the 【PTT】+ “>” key to transmit the corresponding DTMF number.
(1750HZ、1450HZ、2100HZ)
13、紧急呼叫 （SOS)
Press the side key 2 to open and close the SOS, there are "field alarm" and "send
alarm", which need to be set by write frequency software.
五．技术指标 Technical Specification
整体部份 General
Frequency range:FRS
Memory channels: 99
Operation voltage: DC3.7V（li-ion Battery）
Frequency stability:±2.5ppm
Operation temperature: -20℃~+50℃
Mode of operation: Simplex
Antenna impedance:50
Ω
Ground connection: Negative electrode
Volume: 58x28.5x172MM
Transmitter
RF Power
: 1.5W/0.5W
Modulation: FM
Max frequency deviation:≤±5KHz
Stray Radiation:≤-60dB
Transmit current:≤1000mA
Pre-emphasis Character: 6dB/per octave
Receiver
Sensitivity: <0.16uv (12dB SINAD)
Squelch Sensitivity :< 0.2uv
Audio power:≥380mW
Audio distortion: <10%
Intermodulation: ≥65dB
