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2kW FM Transmitter Stereo DDS with RDS and Audio Processing | AAREFF
- 2000W RF Output (Modular 1kW + 1kW LDMOS for Zero Downtime)
- Built-in Stereo with Advanced Audio Processing
- Dynamic RDS (Radio Data System) Included
- Universal Power: 48VDC or 90-260VAC Options
- Digital Audio: USB 192 KHz 24-bit Option
- Exceeds CE & FCC Technical Specifications
- Backed by an Industry-Leading 5-Year Warranty
- Includes 100% Free Global Delivery
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5 YEARS
LIMITED WARRANTY |
2000W (2kW) FM Transmitter: Modular LDMOS Design
Engineered with 29 years of market experience, the Aareff 2kW system is the professional choice for high-fidelity regional FM coverage. It is purpose-built to guarantee maximum air-time reliability, allowing you to overcome the most demanding broadcasting environments worldwide.
Why Broadcasters Choose the Aareff 2kW:
- Zero-Downtime Architecture: Never risk dead air. Dual 1kW LDMOS amplifier blocks and a high-precision Wilkinson combiner ensure your station stays broadcasting at half-power even during routine servicing or a module failure.
- Engineered for Extreme Topographies: Designed to punch through rugged terrain and maximize your EIRP over vast distances. It is the proven high-power solution for the mountains of Mexico, the archipelagos of the Philippines, and the rural expanses of Brazil.
- Unyielding Resilience & Compliance: Built to withstand severe grid instability in emerging markets, while strictly exceeding the rigorous FCC and EU ETSI technical specifications required in heavily regulated zones.
Do You Have A Question?
RF Specification
All stated measurements were made at 220VAC at 27 Deg. Celsius ambient temperature unless stated.
| 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 |
Stereo, RDS, and Advanced Audio Processing FM Transmitter Version
The Ideal Transmitter: Loud, Legal, and Hassle-Free
For Beginners: Features automatic audio level adjustment to ensure your 2000 watt transmitter always complies with state regulatory specifications. Effortless setup guaranteed.
For Professionals: Skip manual adjustments. This unit is housed in a single, integrated enclosure, providing everything needed for optimal performance without external clutter.
Smart Audio Processing & Regulatory Compliance
The built-in audio processing is engineered for maximum competitive advantage:
• It achieves a loud, impactful audio level while strictly preventing over-deviation and potential regulatory issues.
• The internal audio processors and stereo functionality are expertly calibrated to maintain the crucial balance between maximum loudness and legal compliance.
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The audio inputs conform to the industry standard: 600 ohm +4 dBu balanced, using XLR connectors.
Additionally, this version INCLUDES RDS, allowing your station name and other information to scroll across car radio displays.
This is not just ordinary RDS; it features fully programmable dynamic RDS. By connecting the transmitter to a PC via USB, you can modify the RDS data in real-time using the USB PC CONTROL shown below.
Flat 30Hz to 76KHz MPX Input Version: Precision for High-End Audio 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 absolute requirement for professional processing is a flat low-frequency response. As proven by our 160Hz Square Wave Test, our input delivers a perfectly square wave with zero tilting. This allows your external processor to maintain absolute control over the modulation, ensuring maximum loudness and a legal signal without low-end artifacts.
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2. Ultra-Stable Hartley VCO & Slow-PLL Architecture
Superior performance starts with a stable foundation. Our Hartley-based, lightly coupled push-pull VCO is so stable it stays within 10kHz of its frequency even with the PLL turned off. This inherent stability leads to two critical performance benefits:
• Ultra-Low Noise: Because the VCO is naturally stable, the PLL only needs to make microscopic corrections (less than 300Hz), resulting in an exceptionally clean and transparent noise floor.
• Preserved Low-End: By heavily low-pass filtering the PLL control voltage to just a few Hz, we ensure 30Hz bass notes pass through the varicap completely unaltered. This preserves the essential low-frequency response demanded by high-performance audio processors.
Result: This preserves the essential low-end audio response demanded by high-performance audio processors.
Maximize Your Reach: Antenna Selection
The transmitter will work with any 50 ohm antenna rated at 2000W or higher. However, pairing this transmitter with an Aareff high-gain antenna will drastically multiply your Effective Isotropic Radiated Power (EIRP), saving you thousands of dollars in amplifier costs.
When paired with the Aareff 2kW transmitter, expect the following approximate output:
• Vertical 5/8 Wave Antenna: 5kW EIRP
• Circular Dipole Antenna: Up to 10kW EIRP
• Folded Dipole Antenna: Up to 25kW EIRP
Need a Complete Ready-to-Air Solution?
Skip the guesswork. Our 25kW EIRP system includes this exact 2kW transmitter packaged with premium coaxial cable and a perfectly matched folded dipole antenna array. These full turnkey systems are engineered to comply with EU standards and FCC regulations right out of the box.
VIEW THE FULL 25KW EIRP SYSTEM
Skip the guesswork. Our 25kW EIRP system includes this exact 2kW transmitter packaged with premium coaxial cable and a perfectly matched folded dipole antenna array. These full turnkey systems are engineered to comply with EU standards and FCC regulations right out of the box.
Rugged Rack-Mount Construction
The complete 2kW assembly is designed to fit seamlessly into any standard 19-inch rack, consisting of two 3U amplifier enclosures and one 2U control enclosure.
Military-Grade Durability: Crafted from heavy-duty 16-gauge steel and finished with a baked satin-black powder coat. Unlike flimsy alternatives, this rigid construction guarantees a rust-proof, professional chassis built to survive the harshest transmitter sites for years.
Advanced Temperature Protection
Unlike compact models prone to rapid failure, our 2kW system uses two large amplifier enclosures to eliminate concentrated hot spots. This efficient heat dissipation effectively doubles the unit's lifespan.
Extreme Climate Safe: Active temperature monitoring automatically scales back power if ambient temperatures exceed +40°C, ensuring your equipment never overheats in tropical or desert installations.
Advanced VSWR Protection
The 2kW output stage is powered by twin BLP188XNRFE LDMOS amplifiers. These XR (Extremely Rugged) devices are specifically chosen to keep your broadcast stable in the most challenging environments, such as during lightning storms or sudden antenna icing.
Severe Mismatch Safe: Engineered for ultimate reliability, the system withstands severe load mismatches. Your transmitter remains fully protected without shutting down, even at VSWRs greater than 65:1 at 5 dB of compression.
Web Based Audio, Control and Monitoring (OPTION)
Stay connected to your transmitter anywhere, anytime. With AAREFF’s web based remote control and monitoring option, you can monitor and manage critical performance data in real time without needing to travel to site.
- Web Interface & Secure Login – access your transmitter from any browser
- Real-Time Monitoring – forward/reflected power, VSWR, temperature, and supply voltage
- Remote Control Functions – switch RF on/off, adjust power levels, change and fine tune the frequency
- Flexible Connectivity – connect easily via LAN, VPN, or our secure web interface — designed to work even behind firewalls.
This feature not only gives engineers the tools they need, but also provides peace of mind for station managers by reducing downtime, lowering maintenance costs, and ensuring your broadcast runs smoothly 24/7.
THE INTERFACE SHOWN BELOW IS A REAL LIVE!! TRANSMITTER, ONLINE NOW, IN OUR WORKSHOP
> PRESS < the RED speaker icon, wait 4 secs and you will hear the real-time sound being fed to the transmitters audio input section. It will work on mobile, but it looks better on desktop as its designed to be on view in the studio computer.
What You See in the Remote Dashboard
The AAREFF remote control interface provides engineers with a complete overview of transmitter and system status in real time:
- Connection & Device Info – online/offline status, LAN & external IP, device ID
- System Performance – CPU load, processor type, disk usage, memory load, lock status
- Operating Conditions – internal temperature, supply voltages, calibration states
- Transmitter Parameters – frequency, forward power, VSWR, phase voltage, DDS/PLL control
- Real-Time Alarms – instant alerts when parameters go out of range
From anywhere in the world, you can securely monitor, troubleshoot, and control your AAREFF / Veronica FM transmitter, ensuring maximum uptime and peace of mind.
Internal Microprocessor Logging
Every AAREFF / Veronica transmitter is supervised by an embedded microprocessor that continuously records system activity. The internal log provides engineers with precise, time-stamped updates of operating conditions and broadcast data.
- Time-Stamped Events – detailed logs of all changes and updates
- Operating State – PLL lock status, frequency, RF power output
- Live Parameters – phase voltage, VCO levels, calibration values, DDS registers
- Device Information – unique transmitter ID and system identifiers
- Configuration Updates – records frequency adjustments and parameter changes
- RDS Activity – logs text messages, program IDs (PI), PTY codes, and 57kHz carrier status
- Diagnostic Data – low-level register outputs for troubleshooting
This level of transparency ensures engineers can track performance, confirm settings, and diagnose issues quickly whether on site or connected remotely.
Web-Based Control Panel
The AAREFF remote interface allows engineers to configure transmitter and RDS settings directly from any browser, providing complete flexibility and instant control.
- Frequency & Power – set operating frequency and adjust RF output remotely
- DDS Calibration – fine-tune digital synthesis for precise operation
- RDS Text – edit scrolling station messages in real time
- Program Identification – configure PI codes and PTY types
- RDS Carrier Control – switch the 57 kHz subcarrier on or off instantly
- Service Commands – enter advanced commands for maintenance
With this secure, web-based control panel, you can manage your transmitter and RDS data from anywhere in the world.
Compliance
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 about regulatory compliance
Configuration
Plug-and-Play Setup
We ensure your FM Transmitter is ready for immediate use upon arrival.
To facilitate a true plug-and-play experience, we factory-test and pre-set the unit to your desired FM broadcast frequency. This means you can connect the transmitter and begin broadcasting straight out of the box after delivery.
Flexible On-Site Adjustmentsp
If your intended operating frequency changes, or if you don't specify it during the order, adjustments are quick and straightforward. The following parameters are easily user-adjustable in minutes via the underside panel controls:
• Operating Frequency (FM Channel)
• FM Deviation (Modulation depth)
• Output Power Level (Fine-tuning the 1W output)
This design guarantees maximum flexibility and simple on-site configuration for any broadcasting requirement.More information on this in the User Manual, you can find a link to this below.
