General Specification
• Frequency range UHF: 400-470 MHz
• Zone capacity: 256
• Channel spacing:12.5KHz
• Frequency stability: ±2.5ppm
• Battery: 7.4V ±20% 1800mAH (Li-Ion)
• Battery life: digital: 12 hours/analog: 10 hours
• Display: 1.77 inch, 160 x 128 pixels, 260000 colors
• Dimension: 133 x 65 x 45mm
• Net weight: 290g
Transmitter
• RF power output: 4W (high)/1W (low)
• FM modulation: 11K0F3E @ 12.5KHz/14K0F3E @ 20KHz/16K0F3E @ 25KHz
• 4FSK digital modulation: 12.5KHz data only: 7K60FXD/12.5KHz data & voice: 7K60FXE
• Conducted/radiated emission: -36dBm≤1GHz/-30dBm≥1GHz
• Modulation limiting: ±2.5kHz @ 12.5kHz
• FM hum & noise: 40dB @ 12.5KHz
• Adjacent channel power: 60dB @ 12.5KHz
• Audio response: ±3 dB
• Audio distortion: ≤3% (300-3000Hz)
• Frequency stability: ±2.5ppm
• Max frequency deviation: ±2.5kHz
• Digital vocoder type: AMBE2000
• Digital protocol: TSI-TS102 361
Receiver
• Sensitivity: digital: 0.3μV /BER5% /analog:0.3μV (12dB SINAD)
• Adjacent selectivity: ≥60dB
• Intermodulation: 65dB
• Spurious response rejection: ≥60dB
• Blocking: 84dB
• Hum and noise: 40dB @ 12.5KHz
• Rated audio output power: >0.5W
• Rated audio distortion: ≤3%
• Audio response: +1/-3 dB
• Conducted spurious emission: < -57dBm
Environmental
• Operating temperature: -20℃~+60℃
• Storage temperature: -30℃~+80℃
GPS
• TTFF (time to first fix) cold start: <3 minute
• TTFF (time to first fix) hot start: <1 minutes
• Horizontal accuracy: <10 meters

Features
H391 can operate in either analog or digital mode.
Supports various analog signaling types and various squelch control types (CTCSS/CDCSS), providing the user with higher function expansion capacity.
Supports scanning of pure analog voice and signaling, pure Digital voice and data.
The radio supports various calling types including private call, group call, all call and emergency call.
The PTT (Push-To-Talk) key makes the calling of individual/group more conveniently..
The radio supports the data capabilities of sending private and group text message.
Supports radio check, remote monitor, call alert, radio enable and radio disable, etc.
Supports to view the GPS positioning information and send the GPS text message.