Lisheng Digital Walkie talkie M4
The M4 Professional DMR Radio enhances communication efficiency and reliability through its superior audio clarity, robust battery life, and rugged design. Engineered for versatility, it is ideally suited for deployment across a wide range of environments and industries.
Product Details:
- Digital/Analog Compatible
- IP68 Rated Waterproof & Dust-proof
- Voice Encrypted
- Vibration
- Supports Private Call/Group Call/All Call
- Noise Cancellation
- Man Down
- Lone Worker Mode
- Emergency Alarm
- Remote Kill/Revive/Stun
- GPS Positioning (optional)
- Description
- Reviews (0)
Description
General Data
| Specification / Parameter | Details |
|---|---|
| Frequency Range | VHF: 136-174 MHz | UHF: 400-470 MHz |
| Channel Capacity | 32 |
| Zone Capacity | 64 |
| Channel Spacing | 25 / 20 / 12.5 KHz |
| Operating Voltage | 7.4V |
| Battery | 3000mAh Li-ion Battery |
| Battery Life (5/5/90) | Analog/Digital: 12-16 Hrs / 16-24 Hrs (Digital: Above 24 Hours) |
| Frequency Stability | ±0.5ppm |
| Antenna Impedance | 50Ω |
| Dimensions (H×W×D) | 115 x 54 x 27mm (M4) / 115 x 54 x 30mm (M5) |
| Weight | 260g (M4) / 280g (M5) |
| LCD Display | 1.54” OLED |
Receiver
| Specification / Parameter | Details |
|---|---|
| Sensitivity (Analog) | 0.22μV (12dB SINAD) / 0.22μV (Typical) / 0.3μV (20dB SINAD) |
| Sensitivity (Digital) | 0.22μV / BER 5% |
| Selectivity (TIA-603 / ETSI) | 60dB @ 12.5kHz / 70dB @ 20/25kHz |
| Intermodulation (TIA-603 / ETSI) | 70dB @ 12.5/20/25kHz / 65dB @ 12.5/20/25kHz |
| S/N Ratio | 40dB @ 12.5kHz / 43dB @ 20kHz / 45dB @ 25kHz |
| Rated Audio Power Output | 1.5W |
| Rated Audio Distortion | ≤3% |
| Audio Response | +1 ~ -3dB |
| Conducted Spurious Emission | <-57dBm |
Transmitter
| Specification / Parameter | Details |
|---|---|
| RF Power Output | VHF High Power: 5W | UHF High Power: 4W VHF Low Power: 1W | UHF Low Power: 1W |
| FM Modulation | 11KΦF3E @ 12.5kHz | 14KΦF3E @ 20kHz | 16KΦF3E @ 25kHz |
| 4FSK Digital Modulation | 12.5kHz Data Only: 7K60FXD | 12.5kHz Data & Voice: 7K60FXW |
| Conducted/Radiated Emission | -36dBm < 1GHz / -30dBm > 1GHz |
| Modulation Limiting | ±2.5kHz @ 12.5kHz | ±4.0kHz @ 20kHz | ±5.0kHz @ 25kHz |
| FM Noise | 40dB @ 12.5kHz / 43dB @ 20kHz / 45dB @ 25kHz |
| Adjacent Channel Power | 60dB @ 12.5kHz / 70dB @ 20/25kHz |
| Audio Distortion | ≤3% |
| Digital Vocoder Type | AMBE3000++ |
| Digital Protocol | ETSI-TS102 361-1, -2, -3 |
Environmental Specifications
| Specification / Parameter | Details |
|---|---|
| Operating Temperature | -30℃ ~ +60℃ |
| Storage Temperature | -40℃ ~ +85℃ |
| ESD | IEC 61000-4-2 (Level 4) ±8kV (Contact) ±15kV (Air) |
| U.S. Military Standard | MIL-STD-810 C/D/E/F/G |
| Dust & Water Intrusion | IP68 Standard Waterproof Radio |
| Humidity | Per MIL-STD-810 C/D/E/F/G Standard |
| Shock & Vibration | Per MIL-STD-810 C/D/E/F/G Standard |
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