Eddystone S7610C – 10kW FM Transmitter

Overview – Eddystone S7610C 10kW FM Transmitter

Eddystone S7610C 10kW FM transmitter is a modular high power platform designed for continuous professional FM broadcast service up to 10kW RF output.
Compact amplifier and power-supply modules in Eddystone S7610C can be replaced while on air, so engineers see only a modest reduction in output power during maintenance instead of a full outage.
The transmitter complies with ETS 300 384 specifications and can be configured into many system layouts, including combined pairs for higher total power.

The RF drive feeds dual splitters that supply thirty-two 300W E2021 power amplifier modules.
Each module uses dual RF devices mounted on substantial heatsinks to improve cooling and RF stability at high power.
DC power comes from high-efficiency switched-mode power supplies with power-factor correction, helping reduce energy costs and mains loading at large transmitter sites.
Outputs from the PA modules are combined in an N-way RF power combiner and then pass through the output coupler and harmonic filter to maintain excellent spectral purity and low reflected power in Eddystone S7610C.

Each E2021 amplifier module in Eddystone S7610C includes its own control and protection against reverse power, excess current and over‑temperature.
On-board microprocessors monitor operating conditions and send key parameters to the E2023 transmitter controller.
The front-panel backlit LCD shows forward and reverse power, module status and alarms in a clear format so engineers can confirm operation at a glance.
An internal web server and remote interfaces allow secure IP access for monitoring, logging and fault diagnosis, supporting proactive maintenance policies on Eddystone S7610C.

Key technical features

• 10kW FM transmitter with output adjustable down by 6 dB across 87.5–108 MHz.
• Thirty-two hot-pluggable 300W PA modules fed from dual RF splitters.
• N-way RF combiner, output coupler and harmonic filter for low reflected power and clean spectrum.
• High-efficiency SMPS with power-factor correction and shared PA/PSU modules across the S7600 range.
• On-board protection for reverse power, over-current and over-temperature in each PA module.
• E2023 controller with backlit LCD plus secure IP remote monitoring and control for Eddystone S7610C.
• 50 ohm unbalanced 1–5/8 inch EIA RF output, rated to operate at up to 1.9:1 VSWR before power reduction.
• Three-phase and neutral 380–440 V AC mains input with typical overall efficiency around 60% AC in to RF out on Eddystone S7610C.