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

  • 1+1 redundancy level
  • Digital modulator «Direct to Channel»
  • 5-Band Sound Processor*
  • MPX over AES compatibility


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


As solid as 1+1


  • Dual mains breakers
  • Up to 8 x 3500W power supplies with load sharing
  • Up to 6 x 2300W power amplifiers
  • Passive coupler with maximum robustness
  • Oversized coupling loads for unlimited operation on fault
  • Redundant digital exciters
  • Redundant fans cross fed by redundant PSU’s
  • Stay ON AIR even on control unit fault
  • Intelligent design, maximum reliability and redundancy.
    *Figures given in this chapter may vary depending on the transmitter power level and version

More details on the Tech Note

Web InterfaceIntuitive web interface
Exitador digital


  • Digital FM modulator « direct to channel»
  • Highest signal quality
  • Perfect audio fidelity
  • Several built-in broadcast tools
  • Control of all signal parameters
control avanzado


  • Advanced Measurement Interface (AMI)
  • Expert Maintenance Reporting (EMR)
  • Intuitive Web Interface
  • Full SNMP Management


  • 6th MOSFET generation and new planar design
  • Reduced consumption and operational costs
  • Reduced heat and cooling costs
  • Customized air flow configuration
  • Hot swappable power amplifiers, power supplies and fans
  • Reduced maintenance costs

More details on the Tech Note

AMIAdvanced Measurement Interface (AMI)


Reliability is the cornerstone of the ECRESO FM Transmitter design and all our components are selected on the basis of their robustness and reliability. The power amplifiers, power supplies and even the fan modules are fully hot swappable and redundant. The unique architecture and innovative design ensure ease of access, ease of use and ease of maintenance. 

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

Built-in Features

Advanced Communication Pack

Advanced Communication

  • Intuitive and secured Web Interface (TCP/IP)
  • Advanced Measurement Interface
  • Full SNMP Management
  • Audio Backup on µSD card
Audio processing 5 band

Multiband Sound Processor*

  • DSP based 5-band or wide-band processing 
  • Presets for all applications and formats
  • Intuitive GUI to fine tune your sonic signature
  • Low distortion Final Limiter
  • MPX Power Limiter (ITU 412)
Dynamic RDS Encoder

Dynamic RDS Encoder

  • Supports PI, PS, TP, TA, MS, PTY, PTYN, DI, CT, AF, RT
  • Dynamic PS Scrolling
  • Pure and stable signal thanks to Digital Modulator
  • Delivers Audemat’s expertise in RDS
Single Frequency Network

Single Frequency Network (SFN)

  • 10 MHz input for RF Carrier synchronization
  • Adjustable program delay (on audio / MPX inputs)
GPIO Boards


  • Automatic change of preset
  • RF Power scheduling and consumption saving
  • Schedule any parameter of your ECRESO FM
Digital Stereo Encoder

Digital Stereo Encoder

  • High speed DSP circuitry
  • Subcarrier Perfect synchronization
  • Amazing signal quality
MPX over AES

MPX Over AES Input*

  • Improved MPX signal quality
  • No hardware change
  • Compatible with MPX over IP APT codecs
Email notifications

Email Notifications*

  • Alarm sending by SMTP
  • Easy configuration of each notification
  • Same notifications can be sent by SNMP

* verify your version compatibilit

highly reliable

5 Band Sound Processor

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

Read more about Audio Processing ...

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  simplifies the management of all SNMP-enabled devices in a network, providing real-time status, historical data 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.

The WorldCast Manager is compatible with all WorldCast Systems’ equipment as well as SNMP devices from ANY manufacturer.

logo WorldCast Manager

Learn more about
WorldCast Manager

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

user report

User report

“Imagine if we could offer our listeners a sophisticated listening experience which delivered quality, space, transparency and avoided listener fatigue. Imagine if we could offer a sound that was simply a joy to listen to.”



Current Version: 2.0

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
Power setting0-6kW / 0-12kW
Power factor> 0.95
VSWR< 1.35, optimal performance: < 1.1 , protection : >1.5
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< 0.05%
FM S/N ratio> 80 dB RMS @ 75 kHz deviation
AM noise>55 dB, weighted/unweighted, sync/async,  RMS/CCIR (20-20 000 Hz)
Stereo operation
Bandwidth> 20 Hz to 15 kHz @ 0.1 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 dB @ 19 kHz
Preemphasis0 µs, 50 µs or 75 µs 
Environmental / Physical specifications
Overall dimensions29U x 600mm x 1040mm
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
ST01981SFN 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? (updated 2017)

  • 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


  • ECRESO FM 10kW at IBC 2017

  • New ECRESO FM 10kW Transmitter at NAB 2016


  • Ecreso FM передатчики –удачное решение для каждого вещателя!



  • ECRESO FM 5 kW / 10 kW

    Published on Oct 10, 2017
  • Expert Maintenance Reporting

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

    Published on Feb 15, 2017
  • Ecreso Antennas

    Published on Sep 29, 2017

Tech Notes

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

    Published on Jul 28, 2017
  • Maximizing Transmitter Efficiency: A Study of the Ecreso FM 5kW

    Published on Oct 25, 2017
  • What Happens if…? A Study of the Redundancy Capabilities of the Ecreso FM 10kW Transmitter

    Published on Oct 27, 2017
  • How intelligent transmitter design can deliver 1+1 levels of performance - ECRESO FM 10kW Transmitter

    Published on Feb 24, 2017
  • What Happens if…? A Study of the Redundancy Capabilities of the Ecreso FM 5kW Transmitter

    Published on Dec 1, 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 Nov 23, 2017
  • ECRESO FM 5kW / 10kW - Unpacking and assembling

    Published on Feb 13, 2018


  • ECRESO FM 5kW / 10kW - Manual

    Published on Nov 23, 2017

Sound processor

  • Factory presets for built-in Sound Processor

    Published on Sep 6, 2017


  • Corporate Catalog

    Published on Apr 20, 2017
  • WorldCast Systems Overview

    Published on Jun 22, 2018

Press Kit

  • WorldCast Systems Logo - Press Kit

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

    Published on Feb 16, 2017