Eddystone S7605C-10

4/5kW Modular FM Amplifier

The Eddystone S7605C-10 Compact FM amplifier is an evolution of the highly modular architecture for which Eddystone Broadcast transmitters are legendary.

SKU: 103194



Eddystone S7605C-10 – The Compact 5kW FM Transmitter for Cutting-Edge Broadcasting

Introducing the Eddystone S7605C, a compact yet powerful 5kW FM transmitter that stands as the pinnacle of Eddystone Broadcast’s legendary modular architecture. This transmitter marks the next stage in broadcasting excellence, with new and highly efficient 300W hot-pluggable Power Amplifier modules that allow you to replace amplifiers with minimal power loss.

Key Features:

  • Compact Efficiency: The S7605C is designed for optimal efficiency, with compact Amplifier and PSU modules that can be replaced on air, minimizing disruption during broadcasts.
  • Patented Combiner System: This transmitter utilizes Eddystone’s patented N way combiner system, ensuring seamless performance.
  • Compliance: Fully compliant with ETS 300 384 specifications for FM transmitters, meeting the highest industry standards.
  • Versatile Configuration: Easily integrates into a wide range of system architectures, giving you flexibility in your broadcasting setup.
  • Efficient Power Supply: The design features highly efficient switched mode power supplies with power factor correction (PF), simplifying servicing and optimizing performance.
  • Remote Control and Monitoring: Enjoy comprehensive remote control and monitoring capabilities, allowing you to manage your broadcast with ease.
  • User-Friendly LCD: The LCD ensures straightforward local monitoring.

System Overview: The drive input is directed to an internal 16-way splitter, providing the PA module input drive. Each E2021 Power amplifier features dual packaged MOSFETs mounted on a substantial heatsink assembly, optimizing airflow over RF components. DC power is supplied to the RF modules from 8 switched mode power supplies. Individual E2021 power amplifier modules incorporate internal control and self-protection mechanisms, such as reverse power, excess current, or over-temperature conditions. All monitoring data is microprocessor-derived. Each module transmits its internal parameters to the central transmitter controller/monitor (E2023), and you can conveniently view these parameters on an easy-to-read backlit LCD screen.

Cooling Systems: The S7605C transmitter features self-contained redundant cooling fans mounted on the rear of the transmitter. For specialized requirements, the cooling system can be ducted, and bespoke systems are available.


  • Power Output: 5kW (Adjustable to -6dB)
  • Operating Frequency: 87.5 to 108 MHz
  • RF Output Load Impedance: 50 ohm unbalanced
  • RF Output Connector: 1-5/8″ EIA
  • Maximum VSWR: Capable of maintaining full power at 1.5:1 before protection activates
  • Mains Power Supply: Single or Three phase 176-264V
  • RF Harmonic Output: Better than or equal to -79dBc
  • Power Factor: Typically 99%
  • Ambient Temperature Range: 0 °C to +55 °C at an altitude of up to 3000M
  • Overall Efficiency: Typically 63%

The Eddystone S7605C 5kW FM Transmitter redefines broadcasting, combining power and efficiency within a compact design. With its versatile features, high-performance modules, and seamless monitoring, it’s the ideal choice for broadcasters seeking the best in their field.