Eddystone S7603 3kW FM transmitter is a modular high power platform using hot-pluggable 300W amplifier and SMPSU modules to deliver efficient, serviceable RF power for demanding professional FM broadcast sites.
€21,625.00
Eddystone S7603 3kW FM transmitter is an evolution of the modular architecture for which Eddystone Broadcast is known, providing robust medium power FM service up to 3kW RF output.
Compact amplifier and power supply modules allow on-air replacement, so engineers can swap modules with only a small reduction in output power rather than taking the transmitter off air.
The system is fully compliant with ETS 300 384 specifications for FM transmitters and can be configured into a wide range of system architectures, including combined systems for higher power levels.
The drive input feeds an internal 12-way splitter that provides RF drive to twelve E2021 power amplifier modules, each using dual RF devices on substantial heatsinks for efficient cooling and stability.
Outputs from these modules are combined through a highly efficient 12-way common-rail Wilkinson combiner, then routed to the output coupler and harmonic filter to meet stringent spectral purity requirements.
PA and SMPSU modules are common across the 7600 series from 500W to 20kW, allowing network operators to minimise spares and standardise maintenance across multiple transmitter sites.
Each E2021 module includes internal control and self-protection against reverse power, excess current and over-temperature, with all monitoring handled by on-board microprocessors.
Module parameters are transmitted to an E2023 transmitter controller, and key values such as forward and reverse power, combiner temperature and individual module status are shown on a clear backlit LCD screen on the front panel.
The transmitter also supports IP remote monitoring and control via an internal web interface, with parameter logging and fault diagnosis tools to support proactive maintenance.
Eddystone S7603 provides up to 3kW RF output adjustable by at least 6 dB across the 87.5–108 MHz FM band into a 50 ohm unbalanced load, using a 7/8 inch EIA RF output connector as standard.
The transmitter can maintain full power into loads up to 1.5:1 VSWR before protection circuits reduce output, helping to protect the RF chain under adverse antenna or feeder conditions.
Single-phase 176–264 V mains input is standard, with three-phase options available on request, and overall efficiency is typically around 60 percent from AC input to RF output.
These features make Eddystone S7603 a strong choice for regional, national and network broadcasters seeking modular, serviceable high power FM transmission with comprehensive local and IP-based control.
