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MPX Over IP STL Decoder

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MPX STL Decoder for FM Broadcasting

The Escape MPX STL Decoder for Raspberry Pi is a professional receiver designed to decode full MPX composite over IP streams including pilot tone and pass-through RDS. It delivers a clean MPX signal directly to the FM exciter with ultra-low latency. Supporting both Low Bandwidth MPX streams and Uncompressed PCM MPX, it adapts perfectly to each network deployment.

Applications

Ideal for FM broadcasters requiring a dependable STL MPX over IP link. Whether using wireless LAN / microwave links with limited bandwidth or high-capacity IP networks, it ensures consistent on-air performance by feeding the MPX signal directly into the FM exciter.

Key Features

  • Fully compatible with Escape Low Bandwidth MPX Encoder and Escape PCM MPX STL Encoder (Windows PC Software).
  • Decodes MPX composite streams.
  • Ultra-low latency MPX output for direct exciter input.
  • Raspberry Pi 4 / 5 support with HiFiBerry, IQAudio sound cards.
  • Built-in Wi-Fi access for configuration via mobile phone, tablet, or PC.
  • Web-based configuration menu for simple local or remote management.
  • Delivered as a ready-to-use IMG file for SD card writing — no installation required.
  • Automatic stream recovery and watchdog for 24/7 reliability.
  • Live MPX level monitoring & status feedback.

Network & Control

Flexible network configuration is supported with DHCP or static IP, gateway, and DNS settings. Remote firmware updates, user access control, and device management are included, ensuring reliability and security in professional environments.

Reliability

Designed for 24/7/365 operation, the system provides continuous audio delivery with automatic recovery features, making it ideal for mission-critical broadcasting applications.

License

The software and hardware are licensed for a single activation per device. Migration to a new Raspberry Pi requires a new license key.

COMING SOON

Escape MPX STL Encoder for Raspberry Pi — Stand-alone broadcast-grade MPX over IP system.

Project Details

  • Category:STL Radio Link over IP
  • Type:Decoder (RX)
  • Stream:MPX over IP
  • Output:MPX Composite

Requirements

  • Board:Raspberry Pi 4 or 5
  • Memory:1 GB RAM (minimum)
  • SD Card:8 GB minimum
  • Sound Cards

    • HiFiBerry DAC+
    • IQAudio Plus/Pro
    • PiFi DAC+ v2.0