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CE Marked Radio Transmitters. Meets FCC spec. 5-Year Guarantee
- AUDIO AND STEREO PROCESSING
- STANDARD BALANCED AF INPUT
- DYNAMIC RDS CONT. BY USB/PC
- FLAT 30Hz-76KHz MPX FOR PROCESSORS
- LDMOS OUTPUT DEVICES
- OPTION OF INTERNET REMOTE MONITORING
- FREE DELIVERY
- 5 YEAR GUARANTEE
- MEETS EU AND US/FCC TECHNICAL SPEC.
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LIMITED WARRANTY |
For almost 30 years, we’ve engineered FM radio transmitters designed to thrive in the world’s harshest conditions from extreme heat and high humidity to areas with unstable electrical supply. Even the British Army and the BBC relied on our transmitters during operations in Iraq. Why?
Here are the top three reasons:
High Quality
Our FM radio transmitters deliver performance that matches, and often surpasses, the leading high-end brands in the industry. Check out the technical specs below they outperform most budget-friendly Chinese models by a wide margin.
Do You Have A Question?Low Cost
Even with outstanding features and high-grade quality, our FM radio transmitters are offered at prices that are both reasonable and competitive. Click any of the icons below to see the full price including shipping.
Do You Have A Question?Reliability
Despite their impressive specifications and robust construction, our FM radio transmitters remain affordable and easy to access. Click any of the transmitter icons below to see pricing, which includes delivery.
Do You Have A Question?We offer FM radio transmitters starting from just 0.1 watt (100mW) all the way up to a powerful 2000 watts (2kW). To learn more, simply click on the image that corresponds to the power level you require.
USB PC/RDS CONTROL
Download our free PC app that connects 'plug and play' to the transmitter / PLL DDS exciter via USB. You can see the PLL status and change the frequency and power directly from the PC interface. If you choose to add the optional RDS card, you can also change the PI, PTY and scrolling text of the radio from the interface.
Below are the download links for Windows:
https://www.aareff.com/1wpllm/pll14.4/pll14.exe
https://www.aareff.com/1wpllm/pll14.4/pll14.zip
By clicking on these links, Windows may show you a warning that the software is from an unknown publisher. We assure you that we wrote the apps and the files are perfectly safe, virus-free and come from our registered domain www.aareff.com, which you can verify at https://lookup.icann.org/en/lookup
Normal state when the device is connected: the PLL is LOCKED with an output power of 0.85W and a PLL phase of 2.33V
This shows what happens if the device loses its lock. We simulated a failure by placing our fingers on the oscillator coils.
This shows the return to normal with the user command FREQ:106.7 typed in the input box below. A value between 87.5 and 108.0 MHz can be set.
After pressing 'Send:' the display returns UPDATED FREQ 106.7 along with other technical information. This causes the transmitter to change frequency.
This shows another command, RDS-PI:ABCD typed for devices with the RDS card.
After pressing 'Send': the display returns UPDATED RDS-PI:ABCD instantly updating the RDS PI code.
This shows two additional examples of RDS commands:
RDS-TEXT:[write your message here]
RDS-PTY:[number from 0 to 31]
Text is plain ASCII up to 60 chars and valid PTY Codes shown below.
Shown below are the current commands available for USB PC Control and also the PTY codes for program type. We will be making further developments, improvements and more useful commands to this app in the near future. Keep checking this page for details.
◼ DEVICE-ID
◼ STATUS
◼ FREQ:[87.5 to 108.0]
◼ DDS-ADJ:[-1,0 or 1]
◼ PWR:[0 to 1]
◼ RDS-PTY: [0 to 31 list of PTY codes]
◼ RDS-PI: [0000 to FFFF]
◼ RDS-TEXT:[any string up to 60 chars.]
◼ RDS-ON
◼ RDS-OFF
Additional commands following Oct 2025 firmware update
◼ RDS-PS:[any string up to 8 chars.]
◼ RDS-MS:[0 or 1]
◼ RDS-TP:[0 or 1]
◼ RDS-TA:[0 or 1]
◼ RDS-AFNUM:[0 to 15]
◼ RDS-AF:[Up to 15 freq. formatted eg. 88.1, 88.7, 94.8]
◼ RDS-DI:[0 to 31 integer]
◼ RDS-RT:[any string up to 60 chars.]
◼ RDS-SCROLL:[0 or 1]
REMOTE CONNECTION AND MONITORING
Stay connected to your transmitter anywhere, anytime. With AAREFF’s remote control 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.
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 FM transmitter, ensuring maximum uptime and peace of mind.
Internal Microprocessor Logging
Every AAREFF 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.
Every FM radio transmitter we sell comes with a five-year limited warranty. If a fault occurs, you can send it back for repair or choose to troubleshoot and resolve it with our remote assistance whichever you prefer. For full details, take a look at our warranty terms and conditions.
All of our FM radio transmitters include free worldwide shipping. We ship to almost every country using reliable carriers like FedEx or DHL. Just click on the model you're interested in, and the price will be shown in your local currency. If you're comparing with other providers, remember that our prices already cover shipping costs.
Compliance
Our stereo FM radio transmitters, equipped with built-in audio processing and limiting, meet all required regulatory standards right out of the box and are pre-set for immediate operation. If you share your broadcast license and its conditions with us, we will configure your FM radio transmitter to follow them precisely. All of our units are designed to comply with EU/CE harmonized guidelines and FCC rules for FM broadcasting. Learn more HERE.
Service Life
Our FM radio transmitters come with a 5-year guarantee, but their actual working life is often much longer. With regular maintenance, cleaning, and operation in environments under 30°C, it’s common to get 10 years or more from them. Some of our customers are still using transmitters we supplied back in the 1990s.
Operating Temperatures
Each FM radio transmitter we manufacture is built, tested, and certified to operate consistently in a broad temperature range from -20°C to +40°C. And not just briefly they're made for non-stop 24/7 operation over years. No matter if you're broadcasting in arctic cold or desert heat, you can rely on these transmitters to keep your signal live without interruption.
AC Voltage Range
Our FM radio transmitters are designed to be powered anywhere across the globe whether it’s square pins in the UK, round pins in Europe, flat pins in the USA, or angled pins in Australia and New Zealand. They support an extensive input range of 90 to 260 VAC at 50 or 60 Hz, ensuring dependable performance in any region. Models from 50 to 1000 watts are also available in 48V DC versions, perfect for solar-powered applications.
