ECRESO ­FM 5kW / 10kW
Intelligent design delivers 1+1 levels of performance


The latest and most powerful system in our range, the ECRESO FM 5kW/10kW transmitter offers a truly revolutionary approach to high power FM transmission.

With all the key advantages of the core ECRESO range, the ECRESO FM 5kW/10kW adds a whole new dimension of reliability, redundancy and efficiency.  The power amplifiers, power supplies and even the fan modules are fully hot swappable and redundant and a completely passive 6-way coupler ensures that, should one of the amplifiers suffer a fault, the transmitter can stay on-air with minimum power loss indefinitely until the fault is rectified.

The highly efficient, self-monitoring power supplies contribute to a transmitter system efficiency of up to 76%, the highest available in today’s FM broadcast market. 

The unique architecture and innovative design ensure ease of access, ease of use and ease of maintenance.


Audemat ScriptEasy Powerful Performance

  • As solid as a 1+1
  • Digital modulator "Direct to Channel"
  • 5-Band Sound Processor
  • Digital MPX input ready
  • New planar design
  • Customized air flow configurations


Audemat ScriptEasy Powerful Control

  • Full TCP/IP and SNMP
  • Advanced Measurement Interface
  • 24hr graphical history log
  • Expert Maintenance Reporting (EMR)


Audemat ScriptEasy Powerful Savings

  • Up to 76% efficiency
  • Hot swappable power amplifiers, power supplies and fans
  • Built-In functionality
  • Increased life span


  • IP-enabled with web interface
  • Provides SNMP support
  • Audio backup via a micro SD card
  • Silence-Detect, auto-switch and recover
  • Dynamic RDS Encoder
  • Highly oversampled stereo encoder
  • 5-Band Sound Processor
  • MPX Over AES Input*
  • GPIO Boards
  • Single Frequency Network
  • Surge Protector option
  • Email Notification*

*verify your version compatibility


AMI Advanced Measurement Interface
Web InterfaceWeb Interface


  • Slide-Out Input Rack gives easy access to rear panels
  • Accommodates Single Drive systems
  • Additional space for units such as audio processor, monitors or a tablet to access AMI
  • Core elements are hot swappable (amplifiers, power supplies) & fans and coupling loads can be replaced without cabling.
Ecreso FM 10kW modularity


Digital Modulator

From program inputs right through to the final conversion to RF, signal generation and control are performed entirely by digital means. This ensures an exceptionally pure, crystal-clear audio signal with the highest audio fidelity.


Direct to Channel Digital Modulator

New Planar Design

The new ECRESO FM 5kW/10kW pallets use a new planar design offering even better performance (up to 86% efficiency), improved reliability, repeatability and ease of maintenance.

new planar design

New Planar Design

5 Band Sound Processor

Available soon on your new or existing Ecreso FM Transmitter*

The Ecreso FM Transmitter range also 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. 

  • Hosted in direct to frequency Digital Modulator
  • Highest quality processing from audio input to RF output
  • Powerful DSP-based processing
  • Complete 5-band architecture
  • Factory presets for all formats
  • Easy to fine tune through intuitive GUI
  • Real-time meters at each stage
  • No additional hardware:
    maximum reliability, no maintenance

Sound Processor interface

Processing stages

Audio Processor on Ecreso Transmitter. Processing stages

Automatic Gain Control
The first stage of the processor is an automatic gain control which regulates the perceived volume level of the station output across all audio sources and formats. It uses predictive algorithms and protects against unwelcome increases in noise.

Equalization, Bass and Treble Enhancers
The AGC is followed by enhancers which embellish both the low and high frequencies. Combined with 3 parametric equalizers, they enable the creation of a distinct sonic signature. 

Stereo Enhancer and Limiter
A stereo enhancer can be used to improve the stereo image of your station when using non-mono content. It also includes a stereo limiter to improve the quality of your station in areas with problematic coverage.  

5 Band Processor
The 5 Band Processor dynamically adjusts the gain of each audio band. Depending on the selected preset, it can work as a slow and purist multi-band leveler, or as a fuller processor to create a strong sonic signature. The fidelity parameter enables you to fine tune the bands according to your preference; from a purist sound to a more colored texture. 

5 band Limiters
5 limiters have been designed to facilitate the work of the final clipper. For soft formats, the limiters provide smooth protection for your final audio and for commercial stations, they can be used to create extra loudness. 

Final Limiters
This section uses several limiters including HF and final low distortion limiters. In addition, and independently of any preset, the ECRESO FM Transmitter can be configured with an MPX Power Limiter and a deviation Hard Clipper for transmitter protection. 

* Check your version for compatibility

Ecreso offers up to 10 years' 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.

No other FM Transmitter Manufacturer even comes close to that commitment or confidence! We can offer the 10 Year Warranty with confidence thanks to:

  • Our exceptional design quality
  • The outstanding efficiency of our transmitters
  • Advanced diagnostics capabilities
Ecreso up to 10 year warranty

Be Proactive with Expert Maintenance Reporting

EMR is a proactive service available on ECRESO FM Transmitters. It sends the user regular reports on the status of key parameters such as temperatures, currents and voltages, plus information on the performance and lifespan of components such as the fan and power supply of the transmitter.

With detailed logging and trend analysis, Expert Maintenance Reporting can identify slow-burning problems and issue warnings well in advance to allow for corrective action to be taken.  A map-based display of current statuses and detailed, user-friendly reports and graphs can be accessed around the clock in the EMR user page.

Learn more about

Advanced Communication Pack

Connect with WorldCast MANAGER

The WorldCast MANAGER Desktop simplifies the management of all SNMP-enabled devices in a network, providing real-time status and visualization of multiple devices from a single screen. The intuitive and simple-to-use interface shows all devices located at your site(s) displaying product information, alerting you to any alarms and providing one-click access to the unit’s web-based control interface.

Free to download, the WorldCast MANAGER Desktop is compatible with all WorldCast Systems’ equipment as well as SNMP devices from ANY manufacturer.

The WorldCast MANAGER Server adds recorded measurements, detailed logs, alarm management / notifications and more…

Learn more about
WorldCast MANAGER Server
  Learn more about
WorldCast MANAGER Desktop

user report

User report

«Following our extensive laboratory tests as well as experience with WorldCast’s ECRESO transmitters in the field, we felt it was clear that none of the other alternative manufacturers’ systems came close.…When it comes to FM transmitters WorldCast is, in our opinion, undisputed leader in the European market.» 
Michael Radomski UPLINK CEO, Germany


Frequency range87.5 to 108 MHz by 10 kHz steps
Frequency stability< 10-6 per Year
HF output 1’5/8 Type,  50 Ω
Power range0.5-5.5kW / 1-11kW
VSWR< 1.35, Optimal performance: < 1.1
Spurious and harmonic suppression> 82 dBc / > 85 dBc
Efficiencyup to 76%
Voltage3 phase wye + neutral, 340-457 VAC, 47-63 Hz
Fuses10 AT (Exciter and Control Unit)
Analog input (LINE1)2 XLR connectors, balanced, >10 kΩ (600 Ω jumpers selectable), Software adjustable level (-18/+18 dBu range)
AES Input (LINE2) 1 XLR connector, balanced, >110 Ω, software adjustable level (-20 to 0dBFS range), AES 16,24,32 bits, up to 192 kHz
2 Multiplex (MPX/SCA) inputs 2 BNC type, unbalanced, >5 kΩ, Software adjustable level (-18/+18 dBu range)
Composite operation
Bandwidth> 40 Hz to 53 kHz @ 0.1 dB,  > 20 Hz to 60 kHz @ 0.2 dB, > 60 kHz to 80 kHz @ 0.4 dB
Intermodulation distortion< 0.02%
FM S/N ratio> 80 dB RMS @ 75 kHz deviation
AM noise< 0.1% (50 dB) RMS (20-20 000 Hz)
Stereo operation
Bandwidth> 40 Hz to 53 kHz @ 0.1 dB,  > 20 Hz to 60 kHz @ 0.2 dB, > 60 kHz to 80 kHz @ 0.4 dB
38 kHz discontinuance> 50 dB
Stereophonic crosstalk> 50 dB
Mono operation
Bandwidth> 40 Hz to 15 kHz @ 0.1 dB
Out of band rejection> 40 Hz dB @ 19 kHz
Preemphasis0 µs, 50 µs or 75 µs 
Environmental / Physical specifications
Overall dimensions29U x 600mm x 1005mm
Weight5kW: ~330kg / 10kW: ~400kg
Operating temperatureNominal: 5°C to 45°C, Maximum: 0°C to 50°C
Storage temperature -20°C to +70°C , < 10 years
Humidity5 - 95 % non-condensing relative humidity
AltitudeUp to 3900 m 
CoolingCustomized external or Internal air cooling configurations
MarkingCE, FCC
Standards2014 30 UE, 2014 53 UE, ETS 302 018 (EMC), ETS 300 384 (Radio), NF EN 60215 (Safety

Order information

On requestECRESO FM 10kW
On requestECRESO FM 5kW
Software Options
CD00106Dynamic RDS
CD010015 Band Sound Processor
Hardware Options
ST01792SFN Option
On requestOn/Off mains switch
On requestExternal Surge Protector
10 Year Warranty
On request10 year warranty for ECRESO FM 10kW
Redundancy solutions : N+1
Dummy loads, adapters, cables
Cavity filters, combiners and antenna systems
Coverage Study
Turnkey solutions for broadcasting site



  • What makes the ECRESO FM 10kW as solid as a 1+1 FM Transmitter?

  • Guided Tour of the Ecreso FM 10kW - Exciter & Control

  • Guided Tour of the Ecreso FM 10kW - Power Supplies

  • Guided Tour of the Ecreso FM 10kW - Power Amplifiers

  • Guided Tour of the Ecreso FM 10kW - Passive Coupler

  • Guided Tour of the Ecreso FM 10kW - Cooling


  • New ECRESO FM 10kW Transmitter at NAB 2016


  • Ecreso FM передатчики –удачное решение для каждого вещателя!



  • ECRESO FM 5 kW / 10 kW

    Published on Aug 3, 2017
  • Expert Maintenance Reporting

    Published on Jun 13, 2016
  • Ecreso FM N+1

    Published on Feb 15, 2017
  • Ecreso Antennas

    Published on Feb 15, 2017

Tech Notes

  • Maximizing Transmitter Efficiency: A Study of the Ecreso FM 10kW

    Published on Jul 28, 2017
  • How intelligent transmitter design can deliver 1+1 levels of performance - ECRESO FM 10kW Transmitter

    Published on Feb 24, 2017
  • How intelligent transmitter design can deliver 1+1 levels of performance - ECRESO FM 5kW Transmitter

    Published on Jan 13, 2017

Quick Start Guides

  • ECRESO FM 5kW / 10kW - Quick Start

    Published on Mar 16, 2017
  • ECRESO FM 5kW / 10kW - Unpacking and assembling

    Published on Mar 16, 2017


  • ECRESO FM 5kW / 10kW - Manual

    Published on Jul 18, 2017


  • Corporate Catalog

    Published on Apr 20, 2017
  • WorldCast Systems Overview

    Published on Jun 8, 2017

Press Kit

  • WorldCast Systems Logo - Press Kit

    Published on Feb 16, 2017
  • ECRESO FM 5kW / 10kW transmitter - Press Kit

    Published on Feb 16, 2017