Frequency range | UHF: 400 – 470 MHz |
Supported operating modes |
|
Number of channels | 1024 |
Number of zones (Up to 16 channels in each zone) | 64 |
Channel spacing | 12.5 / 20 / 25 kHz (analog) |
Operating voltage | 13.6 ± 15% VDC |
Max. power consumption (in stand by) | ≤ 0.6 A |
Max. power consumption (during reception) | ≤ 2.0 A |
Max. current consumption (during transmission) | 1 W: ≤ 2 A |
Frequency stability | ± 0.5 ppm |
Antenna impedance | 50 Ω |
Dimensions (H × W × D) | 174 x 60 x 200 mm |
Weight | 1.7 kg |
LCD display | 220 x 176 pixels, 262,000 colors, 2.0 inches, 4 rows |
Environmental conditions
Operating temperature range | -30 °C to +60 °C |
Storage temperature range | -40 °C to +85 °C |
ESD | IEC 61000-4-2 (Level 4) |
Protection against dust and moisture | IP54 |
Shock and vibration resistance | MIL-STD-810 C / D / E / F / G |
Relative humidity | MIL-STD-810 C / D / E / F / G |
GPS
Time to first fix (TTFF) | < 1 minute (cold start) |
Horizontal accuracy | < 5 meter |
Transmitter
Transmitting power (adjustable) | VHF: 1 – 25 W / 1 – 50 W |
Modulation | 11 K0F3E at 12.5 kHz |
4FSK digital modulation | 12.5 kHz (data only): 7K60FXD |
Interfering signals and harmonics | -36 dBm (< 1 GHz) |
Modulation limiting | ± 2.5 kHz at 12.5 kHz |
Noise cancellation | 40 dB at 12.5 kHz |
Adjacent channel selectivity | 60 dB at 12.5 kHz |
Audio sensitivity | +1 dB to -3 dB |
Audio distortion | ≤ 3 % |
Digital vocoder type | AMBE +2™ |
Receiver
Sensitivity (analog) | 0.21 μV (12 dB SINAD) |
Sensitivity (digital) | 0.22 μV / BER 5 % |
Adjacent channel selectivity | TIA-603: 65 dB at 12.5 kHz / 75dB at 20 and 25 kHz |
Spurious response rejection | TIA-603: 75 dB at 12.5 / 20 / 25 kHz |
Intermodulation | TIA-603: 75 dB at 20 / 25 kHz |
Blocking | TIA-603: 90 dB |
Signal-noise ratio (S/N) | 40 dB at 12.5 kHz |
Nominal audio power output | 3 W at 20 Ω (internal) |
Maximum audio power output | 8 W at 20 Ω (internal) |
Audio distortion | ≤ 3 % |
Audio sensitivity | +1 dB to -3 dB |
Conducted spurious emission | -57 dBm |
Hytera MD785i DMR mobile radio
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