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Hytera MD785G Duplex

DMR mobile radio that supports the digital trunked radio according to ETSI standard.

    Product description

    The MD785G duplex from Hytera offers ergonomic design in combination with functions according to DMR Tier III, the DMR radio standard for digital trunked radio. With the MD785G duplex, duplex calls can be made without having to press the PTT button. A handset with a complete keypad are required for communication.

     

     

    Intuitive interface and key guidance

    The high-resolution LCD screen offers a clear display, even under difficult light conditions. The large keyboard and ergonomic programmable keys enable efficient and productive communication.

    Reliability and quality

    The MD785G Duplex meets the US military standard MIL-STD-810 C/D/E/F/G and offers protection against dust and moisture in accordance with IP54. This enables this mobile radio to provide reliable service even un harsh environments.

    Excellent voice quality


    By use of narrow band codecs and digital error correction, the MD785G duplex offers you an outstanding audio quality even in loud environments and in boundary regions of the radio coverage. Moreover, the technology employed optimizes the transmitted language. The built-in 4-watt loudspeaker completes the clear transmission of the radio communication.

    Improved utilization of the frequency spectrum

    Thanks to the TDMA process, the MD785G duplex enables you to assign the available bandwidth with double number of channels. This has a clear mitigating effect on increasing spectrum scarcity.

    Versatile functionality


    Besides the classic communication functions, the MD785G Duplex features numerous digital and optional functions, including text messages, GPS location determination and a one-person function.

    Interface for hardware expansion

    The hardware of the MD785G duplex can be expanded using the Option Board interface. Therefore, third-party suppliers are able to develop additional functions.

    Duplex communication

    The TDMA procedure enables simultaneous two-way voice communication, while requiring no PTT button just like a telephone call. With the implemented digital technology, DMR trunked radio systems from Hytera achieve the same quality as conventional PSTN telephone calls.

    Versatile voice communication


    Thanks to digital signal transmission, the MD785G Duplex provides you with different call types: Individual call, group call, emergency call, include call, broadcast call, PSTN/PABX call, semi-duplex call and full-duplex call.

    GPS


    The MD785G duplex supports GPS location determination and sending GPS location data as text message.

    Data services


    The MD785G offers you data services, such as sending text and group messages. Moreover, the MD785G duplex can be used in radio solutions with additional application software, such as AVL or Radio Call Control.

    Different menu languages


    MD785G duplex supports various menu languages, including German, English, Spanish, French, Italian, Polish and Portuguese. Other languages can be added on request

    Features

    Technical data

    General data

    Frequency range

    VHF: 136 – 174 MHz

    Supported operating modes

    DMR Tier III (DMR trunked radio) in accordance with
    ETSI TS 102 361-1/2/3/4

    Number of contacts (individual / group call numbers)

    1024

    Channel spacing (analog)

    12.5 / 20 / 25 kHz

    Channel spacing (digital)

    12.5 kHz

    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)

    5 W: ≤ 5 A
    25 W: ≤ 8 A
    45 W / 50 W: ≤ 12 A

    Frequency stability

    ±1.5 ppm

    Antenna impedance

    50 Ω

    Dimensions (L x W x H)

    174 x 60 x 200 mm

    Weight

    1.7 kg

    LCD display

    220 x 176 pixels, 262,000 colours, 2.0 inches, 4 lines

    Transmitter

    Transmitting power

    VHF: 5 / 25 W
    UHF: 5 / 25 W

    Modulation

    11 K0F3E at 12.5 kHz
    14 K0F3E at 20 kHz
    16 K0F3E at 25 kHz

    4FSK digital modulation

    12.5 kHz (data only): 7K60FXD
    12.5 kHz (data and voice): 7K60FXW

    Interfering signals and harmonics

    -36 dBm < 1 GHz
    -30 dBm > 1 GHz

    Modulation limiting

    ±2.5 kHz at 12.5 kHz
    ±4.0 kHz at 20 kHz
    ±5.0 kHz at 25 kHz

    Hum and noise

    40 dB at 12.5 kHz
    43 dB at 20 kHz
    45 dB at 25 kHz

    Adjacent channel selectivity

    60 dB at 12.5 kHz
    70 dB at 20/25 kHz

    Audio sensitivity

    +1 to -3 dB

    Audio distortion

    ≤ 3 %

    Digital vocoder type

    AMBE++

    Receiver

    Sensitivity (analog)

    0.3 μV (12 dB SINAD)
    0.22 μV (typical) (12 dB SINAD)
    0.4 μV (20 dB SINAD)

    Sensitivity (digital)

    0.3 μV / BER 5 %

    Adjacent channel selectivity

    TIA-603: 65 dB at 12.5 kHz / 75dB at 20 and 25 kHz
    ETSI: 60 dB at 12.5 kHz / 70 dB at 20 and 25 kHz

    Spurious response rejection

    TIA-603: 75 dB at 12.5/20/25 kHz
    ETSI: 75 dB at 12.5/20/25 kHz

    Signal-to-noise ratio (S/N)

    40 dB at 12.5 kHz
    43 dB at 20 kHz
    45 dB at 25 kHz

    Nominal audio power output

    Internal 3 W at 20 Ω, external 7.5 W at 8 Ω

    Audio distortion

    ≤ 3 %

    Audio sensitivity

    +1 to -3 dB

    Conducted spurious emission

    -57 dBm

    Environmental conditions

    Operating temperature range

    -30 °C to +60 °C

    Storage temperature range

    -40 °C to +85 °C

    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) cold start

    < 1 minute

    Time to first fix (TTFF) warm start

    < 10 seconds

    Horizontal accuracy

    < 10 m

    Features marked with * are available in future versions of the product.

    All technical data were tested according to the respective standards. Due to continuing development, technical changes are reserved.

    Scope of delivery

    • Mobile radio MD785G duplex
    • Handset with keypad and display
    • Bracket for handset
    • Mounting set
    • Vehicle battery connection cable
    • Fuse
    • GPS antenna
    • Manual

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