Hytera HM-785 Digital radio
The HM785 DMR mobile radio is the next generation of professional digital mobile radio providing greater flexibility and scalability. This mobile radio with DMR technology supports a single control head as standard with options for remote control head mounting and dual control head to suit different environments (such as vehicles, motorcycles and fixed control rooms) ensuring efficient communication. The new UI interface facilitates faster operations and the AI-based noise cancellation technology guarantees clearer voice even in the noisiest environments. It is also the first ever DMR radio
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- Frequency range
- UHF: 350-470 MHz or
- VHF: 136-174 MHz
- Channels & zones
- Channel capacity: 1024
- Zone capacity: 64
- Channels per zone: 256
- Channel spacing
- Analogue: 12.5kHz/20kHz/25kHz
- Digital: 12.5kHz
- Operating voltage
- 13.6 V DC ±15%
- Current drain
- standby: <0.5 A
- receive: <2.0 A
- transmit 1W: <3 A
- transmit 5W: <4 A
- transmit 25W: <8 A
- transmit 45W/50W: <12 A
- Frequency stability
- +0.5 ppm
- Antenna impedance
- 50 Ohm
- Dimensions(W×H×D)
- 61.5 x 177 x 179 mm
- Weight
- 1520g
- Display
- 2.4 inch LCD display
- Digital protocol
- ETSI-TS102 361-1,-2,-3,-4
Receiver
- Sensitivity
- Analogue: 0.18µV (12dB SINAD)
- Analogue: 0.16µV (12dB SINAD) (typical)
- Digital: 0.18µV / BER 5%
- Selectivity
- TIA-603: 60dB @12.5kHz / 70dB @20/25kHz
- ETSI: 60 dB @12.5kHz / 70dB @20/25kHz
- Intermodulation
- TIA-603: 70 dB
- ETSI: 70 dB
- Spurious response rejection
- TIA-603: 70 dB
- ETSI: 70 dB
- Blocking
- TIA-603: 80 dB
- ETSI: 84 dB
- Hum and noise
- 40 dB @12.5kHz
- 43 dB @20kHz
- 45 dB @25kHz
- Rated audio power output
- internal (20 Ohm load): 3W
- external (8 Ohm load): 7.5W
- Max audio power output
- internal (20 Ohm load): 8W
- external (8 Ohm load): 20W
- Rated audio distortion
- <3%
- Audio response
- +1 to -3 dB
- Conducted spurious emission
- < -57 dBm
Transmitter
- RF power output
- Low Power model: 1-25 W
- High Power model: 1-45 W (UHF); 5-50 W (VHF)
- FM modulation
- 11K0F3E @12.5kHz
- 14K0F3E @20kHz
- 16K0F3E @25kHz
- 4FSK digital modulation
- 12.5kHz data only: 7K60FXD
- 12.5kHz data and voice: 7K60FXW
- Conducted/radiated emission
- -36dBm @<1GHz; -30dBm @>1GHz
- Modulation limiting
- ±2.5kHz @12.5kHz; ±4.0kHz @20kHz; ±5.0kHz @25kHz
- FM hum and noise
- 40dB @12.5kHz; 43dB @20kHz; 45dB @25kHz
- Adjacent channel power
- 60dB @12.5kHz; 70dB @20/25kHz
- Audio response
- +1 to -3 dB
- Audio distortion
- <3%
- Digital vocoder type
- AMBE+2™
Environmental
- Operating temperature
- -30°C to +60°C
- Storage temperature
- -40°C to +85°C
- ESD
- IEC 61000-4-2 (level 4)
- +8kV (contact); +15kV (air)
- American Military standard
- MIL-STD-810G
- Dust & water protection
- IP54
- Humidity
- per GJB150A-2009, MIL-STD-810H standard
- Shock and vibration
- per GJB150A-2009, MIL-STD-810H standard
Location Service
- GNSS
- GPS, GPS+GLONASS, GPS+BDS
- TTFF (time to first fix) cold start
- < 1 minute
- TTFF (time to first fix) hot start
- < 10 seconds
- Horizontal accuracy
- < 5 meters
