ECRESO Changeover – 1+1 & N+1 Redundancy Solutions

Product Overview

The ECRESO Changeover – 1+1 & N+1 Redundancy Solutions is a dedicated controller that protects on-air time by automatically switching between main and reserve FM transmitters. Designed for ECRESO FM and other compatible transmitters, the ECRESO Changeover supervises RF, audio and status alarms and routes RF and control lines to the standby unit when a fault is detected.

At a Glance

• ECRESO Changeover controller for 1+1 or N+1 FM transmitter redundancy systems.
• Manages up to 8 on-air transmitters with a single reserve in N+1 configurations.
• Monitors RF power, VSWR, audio loss and external alarms to trigger fast changeover.
• Front-panel LCD and keypad for manual control plus secure web and SNMP remote access.
• GPIO and CAN / serial interfaces for tight integration with ECRESO transmitters and site control.

System Details

In a 1+1 system, the ECRESO Changeover continuously compares the health of the main and reserve transmitter and automatically switches RF, audio and control to the backup unit if the main fails. In an N+1 system it supervises up to eight program transmitters and a shared reserve, selecting the appropriate RF path and control when any on-air transmitter raises an alarm. Switching criteria can include RF power limits, VSWR thresholds, audio silence, hardware faults or external contact closures.

The controller offers clear front-panel indication of active and standby transmitters along with comprehensive logging of events for post-fault analysis. Remote engineers can access the ECRESO Changeover via an embedded web server or SNMP, allowing them to adjust thresholds, force manual switches or integrate status into a network management system. Robust power supply design and industrial components ensure that the redundancy controller itself is as reliable as the transmitters it protects.

Use Cases

• 1+1 redundancy for critical main FM transmitter sites where downtime is unacceptable.
• N+1 systems for regional networks using several transmitters protected by a single reserve.
• Upgrade path for existing FM plants needing automated, remotely managed changeover.

Alternative Products

• ECRESO 1+1 FM Transmitter Systems – complete transmitter packages with built-in ECRESO control unit for full 1+1 redundancy when you need both transmitters and controller together.
• ECRESO FM AiO Series Transmitters – high-efficiency transmitters that integrate smoothly with the ECRESO Changeover for scalable redundancy projects.

For more FM transmitters and RF redundancy options, visit our

FM Transmitters category
.