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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 nearly three decades, we've built radio transmitters tough enough to perform in the most extreme environments on Earth from scorching heat and high humidity to locations with unreliable power. Even the British Army and the BBC trusted our transmitters in Iraq. Why?
These three simple reasons:
High Quality
Our radio transmitters rival the performance of the industry's top-tier and most premium brands. Take a look at our technical specifications below. They far exceed anything you'll find from typical low-cost Chinese alternatives.
Do You Have A Question?Low Cost
Despite the amazing spec and quality of our radio transmitters, our prices are low and affordable. Click on one of the radio transmitters icons below to get the price INCLUDING shipping.
Do You Have A Question?Reliability
Even with their exceptional specifications and build quality, our radio transmitters remain budget-friendly and accessible. Click any of the transmitter icons below to view pricing. Shipping included.
Do You Have A Question?Our radio transmitters range from just 0.1 watt (100mW) up to a powerful 2000 watts (2kW). For more details, simply click on the image that matches the power level you need..
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.
All our radio transmitters include a five year limited warranty. If anything breaks, return the transmitter to us and we will repair it or we will assist you to resolve the problem on site, your choice! If you want to know more here's our warranty small print.
All of our radio transmitters come with free shipping included. We deliver to nearly every country worldwide via FedEx or DHL. Simply click on the model you're interested in below, and you'll see the price displayed in your local currency. If you're comparing with other suppliers, keep in mind that our prices already include free shipping.
Compliance
Our stereo models with built-in audio processing and limiting fully comply with regulatory standards right out of the box pre-configured for immediate use. If you provide us with a copy of your broadcasting permit and its specific conditions, we’ll set up your FM transmitter to match those exact requirements. All our radio transmitters are built to meet EU/CE harmonized standards as well as FCC technical specifications for FM broadcasting. Learn more HERE.
Service Life
Our radio transmitters are guaranteed for 5 years, however the lifetime of of the product is considerably longer than this. It is normal to expect 10 years plus from our radio transmitters if they are serviced, cleaned and maintained in an environment of 30 degrees or less. We have clients that are still using our radio transmitters that were installed in the 1990s.
Operating Temperatures
Every radio transmitter we offer is engineered, tested, and guaranteed to operate reliably across a wide temperature range of -20°C to +40°C not just for a few hours, but for years of continuous 24/7 use. The transmitters featured on this page are built for uninterrupted performance. Whether you're broadcasting from the Greenland or the Sahara, you can count on our transmitters to keep your station on the air, day in and day out.
AC Voltage Range
Our radio transmitters can be powered anywhere in the world whether it's square-pin plugs in the UK, round-pin in Europe, flat-pin in the USA, or slanted-pin in Australia and New Zealand. They support a wide voltage range of 90 to 260 VAC at both 50 and 60 Hz, ensuring reliable operation no matter the region. Additionally, transmitters from 50 to 1000 watts can be specially configured to run on 48V DC, making them ideal for solar-powered setups.
