Telephone Hybrids - DHY-04G

    A new addition to the DHY-04 range is the ability for the DHY-04G version to be used on a GSM cellular (mobile) phone network instead of a telephone (POTS) line. The DHY-04G can accept a SIM card in the rear panel slot and by connecting a suitable GSM antenna, the DHY-04G can receive and make high quality broadcast calls over the cellular network, converting the GSM call to the 4 wire audio signal to and from a connected mixing console. The GSM module used in the DHY-04G is quad-band GSM, so it can take and make calls on any 2G network.

    Ideal for studios in remote locations, for OB vans and trucks on the move, and in emergency situations where a telephone landline can’t be guaranteed, the DHY-04G offers outstanding performance.

    The DHY-04G has all features of the DHY-04 (read cellphone/mobile features instead of telephony features in the listed bullet point specification) together with some additional front panel indicators. There are two LEDs, one for SIM enabled and one for GSM Network availability. Additionally there is a push button which allows the GSM signal level to be displayed on the meter LEDs.

    Technical Specification For DHY-04G

    Audio Specification


    Analogue Audio I/O

    Input Impedance - Line Mode (Clean Feed): 10kΩ balanced 0dB
    Input Impedance - Conferencing: 10kΩ balanced 0dB
    Input Impedance - Microphone Mode: 2kΩ balanced
    Input Level Gain Range: +6dB, 0dB, and -6dB adjusted by 3-position front panel switch, +10dB jumper
    Microphone Level Gain Preset: From 65dB to 35dB
    Maximum Input Levels: Line +26dBu, mic -24dBu
    Clean Feed Limiting Input: -4dBu for CTR21 setting, other values available *
    Output Impedance - Line Out: 50Ω balanced floating 0dBu
    Output Impedance - Conference/Record: 50Ω balanced floating 0dBu
    Output Level Gain Range: +6db, 0dB, and -6dB adjusted by 3-position front panel switch

    Digital Audio I/O

    Input Impedance: 110Ω ±20% balanced
    Output Impedance: 110Ω ±20% balanced
    Sample Frequency Range: 30 - 100kHz (i.e. including 32kHz, 44.1kHz, 48kHz, 64kHz, 88.2kHz & 96kHz)
    Signal Level: 2V/7V peak to peak min/max
    Analogue Input Level for Full Scale Digits: +18dBU

    Telephone Line

    Rejection Ratio: 80-88dB on complex waveforms, reference peak level of 0dBFS
    Ring Detector Sensitivity: Off, 2, 4 or 6 rings

    GSM Connection

    Module Type: Quad-Band EGSM 850 / 900 / 1800 /1900MHz
    Output Power: Class 4 (2W) @ 850 / 900MHz,
    Class 1 (1W) @ 1800 / 1900MHz
    Sensitivity: -107 dBm (typ.) @ 850 / 900MHz,
    -106 dBm (typ.) @ 1800 / 1900MHz
    Approvals: Fully type approved conforming to R&TTE CE, GCF, FCC, PTCRB, IC, Anatel

    Power Supply

    Power to DHY-04G, GS & GT Universal 12W power supply: 90 to 250V AC; 47-63Hz; fused 1A
    * These values are dependent on the actual country setting selected on the DHY-04


    Mic/Line/AES-EBU Input: XLR 3 pin female, with push-button mic/line selection
    Line/AES-EBU Output: XLR 3 pin male
    GSM Antenna SMA socket
    Conferencing or Record Audio: RJ45 socket
    Remotes: 9-way D-type socket
    Ethernet: RJ45 socket
    RS232 Serial: 9-way D-type socket
    Power: IEC mains (CEE22)

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