WorldCast Systems, with its ECRESO range, brings to the market over 60 decades of RF experience and the best solutions in terms of Total Cost of Ownership, reliability, and user experience.

ECRESO offers a range of solutions for broadcasters and operators:

Fully digital Ecreso FM transmitters for analog FM, Ecreso broadcast transmitters come in a cutting-edge, compact yet modular design in powers ranging from 100W to 10kW.

Ecreso Switch Controller for radio & TV antenna switches at RF transmitter sites.

20,000+ Ecreso transmitters are broadcasting at over 10,000 sites worldwide, making them one of the most trusted transmitter brands available today. 

They boast high efficiency of up to 76% and host a wide range of onboard features along with an industry-leading innovation – SmartFM. This worldwide patented technology is embedded into our transmitters and enable broadcasters to benefit from up to 40% energy cost savings.

The Highest Standards of FM Broadcasting

Why Choose Ecreso?


60 years of expertise developing RF solutions and deploying several thousands of systems worldwide enables WorldCast Systems to accompany your transmitters with a range of services and warranties.


Thanks to cutting-edge innovations and an intelligent design, Ecreso FM 3kW offers high efficiency, reduced consumption and easy maintenance. All-in-all the lowest Total Cost of Ownership.

Highest Quality 
to Listeners

Ecreso brings amazing audio to your radio broadcasting thanks to the direct-to-channel digital modulator, 5-band sound processor, and MPX over AES compatibility. It’s built-in redundancy also keeps you on-air, at all times.

Ecreso Customers

What People Are Saying

Recent Success Stories

Our Experts

We bring to market the most advanced and complete FM transmitters. Thanks to our extensive scope of expertise including RF, digital modulation, audio processing, production, quality verification, and technical support, we ensure customers broadcast with the best equipment and support available. Learn about some of our experts. 


Eric has been leading our development team for FM transmitters since 1996. Prior to that he was at ECRESO RFTS Broadcast where he participated in several RF project developments ranging from Hz to GHz. He has acquired a solid expertise in broadcasting projects around the world and a very good knowledge of requirements and constraints of transmitter sites. 

Eric Pere
RF Product Manager

Gregory has over 15 years of experience leading product marketing for ECRESO FM transmitters. He mangaes the team of Application Engineers, 

Gregory Mercier
Director of Product Marketing & Pre/Post Sales Support

"I am in charge of the product development which involves the supervision of various technical skills such as mechanical drawing of digital and analog electronics, radio frequency, thermal, but also software skills for web or PC based onboard software or GUI."

Hervé Garat
R&D Project Manager

Nathalie Flambard

FM Transmitter Services

Our team of experts partner with you throughout all phases of your project 
with our large scope of services. From engineering studies to installation and technical support, you can count us, every step of the way.

Product Line

FM Transmitters

Ecreso meets broadcasters' needs as the highest quality solution in terms of efficiency, audio quality, robustness, and reliability.

Antenna Switch Controller (Radio & TV)

Auxiliary Parts


Datasheet >


Datasheet >

Highlights & Innovations

SmartFM: Artificial Intelligence For FM Radio

Worldwide patented technology for FM transmitters which revolutionizes FM radio broadcasting and brings massive benefits to broadcasters, radios, and their audience of listeners.

This sophisticated algorithm, or AI, introduces a whole new paradigm to energy savings and by enabling broadcasters to reduce their energy costs by up to 40%, without any compromise on the audio quality and coverage. 

Thanks to SmartFM, Ecreso transmitters are the most innovative, environmentally-friendly and competitive in terms of Total Cost of Ownership.

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High efficiency up to 76%

When choosing an FM transmitter for your network, efficiency is one of the most important selection criterion as it has a direct technical and financial impact on your station. Higher efficiency means you can broadcast at the same power level while reducing your utility power consumption and heat dissipation. 

As a result, significant savings can be achieved on your electricity bill and cooling systems. But less heat also means less stress on components, increased reliability and a longer service life for your transmitter. That's why, when comparing the efficiency of a transmitter, the best measure is the total and real efficiency including modulator, amplifier stage, power supply, fans and display. It should be measured from the AC mains power input to the RF output, with external and calibrated measurement tools. Even additional functions (RDS encoders, stereo encoders, sound processors...) could be added to the power and efficiency calculations as those units are part of your FM chain with their own power consumption and generation of excess heat. 

The new line of ECRESO FM transmitters provides the highest overall efficiency on the market, up to 76%! Such tremendous performance can only be achieved by using the latest available technologies combined with an innovative design. 


  • Up to 76% efficiency
  • Less heat
  • Higher lifespan
  • Lower maintenance and equipment downtime
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6th Generation MOSFET & 

ECRESO FM transmitters are based ona 6th generation MOSFETs, which offer up to 86% efficiency. These semi-conductor devices dissipate less heat for their surface and consume less power than previous generations. These MOSFETS are more rugged agains high VSWR events and more resistant to heat with a maximum junction temperature up to 225°C. With our super heat sink design and this new MOSFET technology, the new ECRESO FM transmitters are cooler, more reliable and much more economical to own. Based on the same MOSFET, the new ECRESO FM 5/10kW pallets use the new planar design offering even better performance, improved reliability, repeatability and ease of maintenance.

Advanced Monitoring
For full control

With our advanced communications solutions, broadcasters have full control remotely or onsite of their Ecreso FM transmitters.



  • Time savings for team deployment thanks to data driven insights and remote actions
  • Ensure optimal equipment performance
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Intuitive web interface (GUI)


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Full SNMP Management



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Advanced Measurement Interface (AMI)


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Graphical 24h History Log



Keeping your radio on-air

Reliability is the cornerstone of the ECRESO FM transmitter design and all our components are selected on the basis of their robustness and reliability. 

Our power supplies accept a large voltage range on the main power input to ensure consistent operation even during power variations. The power supplies are also protected against short circuit, overload, over-voltage, temperature. For even more protection, a second, optional, surge suppresor module can be included in ECRESO transmittesat the customer's request. We have also designed fail-over options based on Silence detection or loss of RDS signal into the system and included built-in Audio Back-up to ensure off-air time is minimized or eliminated. 

For ultimate reliability and redundancy, we offer a range of Dual Drive, 1+1 and N+1 systems. 


Burn-In Testing
Highly Accelerated Life Tests (HALT)
Parts Stress Analysis (PSA)
Failure Mode Effects and Criticality Analysis (FMECA)

Broadcast amazing sound with sound processing 
in the direct-to-channel digital modulator

The Ecreso FM Transmitter range features an integrated multi-band sound processor! This fully digital sound processor offers the highest signal quality and outstanding reliability as no additional hardware is required*.


You can choose from a wide-band or a multi-band version to achieve the level of processing required at your site and the processor is supplied with a full set of presets for many different formats and requirements. 


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Solid Robustness. Solid 10-Year Warranty.

WorldCast Systems offers a standard warranty of 3 years on all our FM transmitters and up to TEN YEARS' Warranty on our range of compact FM transmitters and new ECRESO FM 5kW/10kW for a small additional charge.

We can offer the 10-year warranty with confidence thanks to:

  • Exceptional design quality
  • Outstanding efficiency
  • Advanced diagnostics capabilities

We'd love to hear about your project