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    DB Broadcast Mozart 500

    500W Stereo FM Transmitter

    TRU Price Guarantee

    (Subject to conditions)

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    2-Year Warranty


    Mozart series – the latest Audio excellence in FM Broadcasting

    FM transmitter – Radio transmitter :  the new Mozart FM Transmitter – Exciter Series is the latest audio excellence in the FM Broadcasting industry with revolutionary Audio & RF technology.


    – The GREEN RF™ technology, combined with new 65:1 devices, is the latest evolution of the world-famous patented COLD-FET™ technology applied on DB’s transmitters.

    – FM transmitter Low maintenance costs thanks to the easy access to all components, external cooling air filters, very high MTBF for RF and power supply modules.
    – Compact design and low weight to reduce transportation costs and simplify logistics.
    – FM transmitter High frequency stability in short and long terms assured by Digital Phase Locked Loop circuit with low drift VCTCXO.
    – FM transmitter Complete WEB SERVER SNMP, GSM or SMS remote control, available as option.
    – FM transmitter Complete remote management via WiFi with WiFi Touch, available as option.
    – FM transmitter External reference oscillator, available as option: 10 MHz.
    – Frequency Agile Broadband, settable directly from the LCD front panel with 10 KHz steps without need for tuning tools.
    – Meets or exceeds all international standards for safety and electrical specifications.

    • FM transmitter MSE™: Magnetic Sound Enhancer is a magnetic barrier that protects the VCO, the heart of FM modulator, and increases sound quality.
    • Stereo Generator: high performance built-in digital stereo coder provides separation typical > 65dB.
    • Signal/noise ratio >80dB assures the highest audio quality.
    • Input sensitivity and output deviation adjustable with high precision of 0,05dB through front panel or remotely by web interface.
    • FM transmitter level and phase of the pilot tone adjustable from the front panel and Web interface.
    • AES/EBU digital stereo audio interface available as option.
    • Powerful modulation limiter keeps the maximum frequency deviation within international requirements to avoid overmodulation and adjacent channels interference. Limiter levels can be set from the front panel.
    • FM transmitter Switch-mode power supply with power factor control. Highly efficient and widely over-rated power supply modules insure low heating, low AC power consumption and superior reliability. The power factor control circuitry meets the international requirements for mains network disturbances.
    • FM transmitter High efficiency cooling system. Thanks to the air cooling system, the heat-sink temperature can rise only about 10°C above ambient temperature. This guarantees the proper functioning even in sites with extreme climate conditions and high temperature.


    • Frequency range:87.5 to 108 MHz adjustable with 10kHz step
    • Output impedance:50 Ω
    • Output connectors:N from 30W up to 500W
    • DIN 7/16 for 1kW
    • EIA 7/8” for 2kW and 3.5 kW
    • Deviation capability:±75 kHz, up to ±200 kHz with distortion < 0.5%
    • Short term stability:± 1 ppm from -5 to +45 °C
    • RF harmonics:Exceeds CCIR/FCC requirements
    • RF spurious:Exceeds CCIR/FCC requirements
    • Pre-emphasis:0, 25, 50, 75 us (selectable)
    • Modulation monitoring:BNC connector
    • Pilot tone:Phase and Amplitude adjustable from display and WEB interface
    • Log file:Up to 200 dated events saved in the transmitter memory, accessible from display and WEB interface

    Audio Inputs

    • Modulating input signal:Mono, Stereo (Left, Right, Left + Right), Encoded stereo (MPX), SCA, RDS, AUX, Digital AES/EBU
    • Input sensitivity adjustment:With 0,05dB steps by front panel display interface or by WEB interface
    • Limiter:It can be enabled/disabled and adjusted from 30 kHz to 180 kHz by front panel display and WEB interface
    • Internal RDS coder:Synchronized with the 19kHz pilot of the internal stereo coder or the 19kHz pilot of an external MPX signal


    • Audio input levels for +/- 75 kHz deviation:Adjustable from -9 to +18 dBu
    • Audio response:±0.3 dB (30 Hz to 15 kHz)
    • THD+N on encoded channels:< 0.06% ( typ. 0.03% ) (30 Hz to 15 kHz)
    • Audio Impedance:600Ω Balanced
    • Audio connector:XLR


    • Audio input levels for +/- 75 kHz deviation:Adjustable from -9 to +18 dBu
    • Audio response:±0.3 dB (30 Hz to 15 kHz)
    • THD+N on encoded channels:< 0.03% (30 Hz to 15 kHz)
    • Audio Impedance:10 kΩ Unbalanced or 600Ω Balanced
    • Audio connector:XLR (Left & Right)

    MPX (External coder)

    • Audio input levels for +/- 75 kHz deviation:Adjustable from -6 to +6 dBu or from +6 to +18 dBu (selectable at order)
    • THD+N on encoded channels:< 0.03% (30 Hz to 100 kHz)
    • Audio Impedance:> 5 kΩ Unbalanced
    • Audio connector:BNC

    RDS/SCA/AUX (with separated connectors)

    • Audio input levels for +/- 75 kHz deviation:Adjustable from -19.5 to +7.5 dBu
    • Audio Impedance:2 kΩ (others on request) Unbalanced
    • Audio connector:BNC


    • Audio input levels for +/- 75 kHz deviation:Adjustable from -15 to 0 dBFS
    • Audio Impedance:110 Ω
    • Audio connector:XLR

    AC Power Requirements

    • AC supply voltage:115 / 230 VAC ± 15%, single-phase
    • AC supply frequency:50 Hz or 60 Hz, ±5%
    • Power factor:> 0.9


    • Cooling:Forced air
    • Service:Continuous 24/24h
    • Operating temperature:-5°C to +45°C
    • Derate 3°C per 500 m above 2000 mt asl
    • Relative humidity:Up to 95%

    Mozart 500 Brochure


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