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2kW FM Transmitter Stereo DDS with RDS and Audio Processing
- 2000 WATTS RF OUTPUT
- STEREO WITH AUDIO PROCESSING
- DYNAMIC RDS OPTION
- 48VDC or 90-260VAC OPTION
- USB 192 KHz 24 bit OPTION
- INCLUDES SHIPPING
- 5 YEAR WARRANTY
- EXCEEDS CE/FCC TECHNICAL SPEC.
- MODULAR 1kW + 1kW LDMOS DESIGN
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LIMITED WARRANTY |
2000W (2kW) FM Transmitter: Modular LDMOS Design for Regional Broadcasting
The Aareff 2kW system is a fully modular FM solution engineered for maximum air-time reliability. By combining two 1kW LDMOS amplifier blocks with a high-precision Wilkinson splitter and combiner, this system ensures that even during routine maintenance on one module, your station stays on air at half-power. Designed to exceed FCC and EU ETSI technical specifications, it is the professional choice for high-fidelity regional coverage.
Which FM Transmitter Version Do You Need?
Selecting the Optimal Version for Your Broadcast Requirements.
Choosing the correct version of your FM Transmitter is crucial for operational efficiency and meeting your specific broadcast goals. We offer professionally engineered systems that cover 90% of customer requirements right out of the box, ensuring you get the exact functionality needed for your station.
These are the two primary, professional versions of our FM Transmitters:
◼ Stereo with RDS and Audio Processing Version
Ideal for: Any station prioritizing high audio quality, professional stereo separation, and dynamic Radio Data System (RDS) functionality for displaying station name, song titles, or slogans. This is the most feature-rich option for modern, professional broadcasting.
◼ MPX Version
Ideal for: Experienced engineers who handle external audio processing and stereo encoding outside the transmitter. This version accepts a pre-processed and encoded composite signal (MPX) for direct modulation, offering maximum control to the audio chain expert.
Need Customization?
We understand that custom requirements exist. If you need alternative versions (e.g., stereo only, no RDS, no processing), we can accommodate these requests to match your specific technical setup.
You will find detailed descriptions of both the Stereo/RDS and MPX versions, including how they work, technical specifications, and the final price INCLUDING delivery to your country, in the following sections.
Contact Our Experts
If you are still unsure, you are always welcome to contact us at: info@aareff.com or ws: +1 829 6980733 and we're more than happy to advise you.
We are happy to provide personalized technical advice to ensure you choose the system that maximizes your EIRP and operational efficiency.
Do You Have A Question?
Stereo, RDS, and Integrated Audio Processing System
The Recommended Choice: Automated Compliance & Performance.
If you're uncertain about which system to select, this version is the highly recommended and definitive choice. It provides an ideal combination of power and ease-of-use.
• For Beginners: This system automatically manages audio levels, guaranteeing your 2000 watt transmitter remains compliant with all state regulatory requirements. An excellent, worry-free option to start broadcasting.
• For Professionals: Benefit from a hassle-free setup. Everything is neatly contained in a single enclosure, simplifying installation and maintenance.
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The audio inputs follow industry standards: 600 ohm +4 dBu balanced, using XLR connectors for professional-grade connections.
Additionally, this version comes with built-in RDS, allowing listeners to see your station name and other dynamic messages on car radio displays.
This is not just standard RDS—it features fully programmable dynamic RDS. By connecting the transmitter to a PC via USB, you can update RDS data in real time using the USB PC CONTROL function shown below.
Flat 30Hz to 76KHz MPX Input: Raw Precision for Expert Processors
Professional-Grade Raw MPX Input
This version is specifically available for experienced users who require a straight, raw MPX input for external signal processing.
1. Zero Tilt for Multiband Processors
• The holy grail of multiband audio processing is flat low-frequency audio response, and this input delivers exactly that.
• The 160Hz square wave test (shown in the image) demonstrates a perfectly square wave with zero tilting, making it ideal for integration with high-end commercial audio processors like Orban, Inovonics, Omnia, and Stereo Tool.
2. Technical Excellence: Ultra-Stable VCO System
Superior performance is guaranteed by our core hardware design:
• VCO Technology: Utilizes a Hartley-based, lightly coupled push-pull VCO.
• Extraordinary Stability: This VCO exhibits extraordinary stability, deviating by less than 10kHz from its designated frequency on its own—even when the Digital Synthesis System (DSS) and the Phase-Locked Loop (PLL) are switched off.
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Performance Benefits: Clean, Low-Noise Audio
The inherent stability of the VCO leads to two crucial audio benefits:
• Low Noise: The PLL only needs to make minor corrections (maintaining frequency within about 300Hz, ensuring the audio remains exceptionally clean and low-noise.
• Preserved Low-End: The PLL's control voltage is heavily low-pass filtered to just a few Hz. This slow loop filter ensures that low frequencies around 30Hz are not misread as frequency drift, passing completely unaltered to the varicap.
Result: This preserves the essential low-end audio response demanded by high-performance audio processors.
Stock Code: 2000wpll19p. Email or WS for the price
The transmitter will work with any 50 ohm antenna rated at 2000W or higher. The following antennas when used with this 2kW transmitter will radiate (EIRP) the approximate power shown.
• Vertical 5/8 Wave 5kW EIRP Our 25kW EIRP system
includes this transmitter packaged in with coaxial cable and a suitable antenna system. These full systems are engineered to comply with the EU standards and regulations for licensed broadcasting and most other countries regulations in the world. The 2kW transmitter package uses two large amplifiers enclosures which spread the waste heat over a larger area. Spreading the heat this way improves long term reliability over compact type models simply because there are no concentrated hot spots which always lead to faster failure. This generally doubles the lifetime reliability over the equivalent compact type model. In addition to this there is active temperature monitoring which in worse case scenario will reduce the power automatically to protect the unit if the ambient temperature is extreme at over +40C.
The final output stage of the 2kW transmitter utilizes twin BLP188XNRFE LDMOS amplifiers, specifically chosen for their extreme ruggedness. These XR (Extremely Rugged) devices are designed to withstand severe load mismatches at VSWRs greater than 65:1 at 5 dB of compression. For ultimate reliability, the system is engineered to remain stable and protected even under the most challenging antenna environments.
The complete assembly is made up of two 3U enclosures and one 2U enclosure in strong 16-gauge steel, powder coated and baked in satin black. This is military grade strength, not flimsy thin paneling that eastern countries make. The whole thing tough with a durable surface that will never rust and will shine for years. The front panels are 19 inches so they will fit with ease into a standard rack.
The frequency and power level is easy to change, but not so easy that somebody with no experience can just press a button on the front, that would be too easy and dangerous. We reached a compromise with this, we placed these controls on the underside of the unit. To get to them, just slide the unit out of the rack, flip it over and the little dip switches will allow you to change the frequency and a trim pots for the power and deviation level.
The stereo version with audio processing and limiting meets all the regulatory standards required out of the box and pre configured. In fact if you send us a copy of your permit and it's conditions, we will set it up exactly to the specification. This equipment complies with EU/CE harmonised standards and FCC technical requirements for FM broadcasting. More information HERE All stated measurements were made at 220VAC at 27 Deg. Celsius ambient temperature unless stated.
Antennas
• Circular Dipole up to 10kW EIRP
• Folded Dipole up to 25kW EIRP
Temperature Protection
VSWR Protection
Construction
Frequency, Power and Deviation
Compliance
RF Specification
Power Output Adj. 1-2000 Watts into 50 ohms Spurious Emissions Less than -75 dB ref to carrier Harmonic Emissions Less than -70 dB ref to carrier Freq Stability +/- 1 KHz max. typ. +/-300 Hz Deviation Sensitivity Stability +/-2 % max Freq Fine Adj > +/- 1000 Hz Freq Range 87.5 to 108 MHz in 100 KHz steps Out of Lock RF Muting Less than -70 dB ref to carrier Residual AM Less than 0.5 % Synchronous AM Less than 0.5 % RF Ruggedness Any VSWR phase or length of time Output Connector DIN 7-16 Operating Temp -20 to +40 Deg C
AF Specification
Pre-emphasis (50 uS/ 75 uS/ None) Selectable Audio Input Connector XLR True Balanced 600 ohm
No Ground Ref./ Floating Audio Input Sensitivity +4 dBu for +/- 75 KHz dev.
Version MPX Stereo and Audio Processor Signal To Noise Ratio 80dB 65dB Frequency Response 30Hz-76KHz 30Hz-15KHz Audio Distortion Better than 0.1% / 60dB THD Better than 0.1% / 60dB THD
AC Specification
Input Voltage 90-264 V AC 135-370 V DC 47-63 Hz Input Power 3000W for 2000W RF OUT with RF SWR less than 1.5 Working Humidity 20-90% RH non-condensing Safety Standards UL60950-1 TUV EN60950-1 BSMI CNS14336 CCC GB4943 J60950-1 approved EMC Emission Compliance to EN55022 class B EN61000-3-2 3 FCC PART 15 / CISPR22 class B CNS13438 class B GB17625.1 EMC Immunity Compliance to EN61000-4-2 3 4 5 6 8 11 light industry level criteria A
