Eddystone S7602

The Eddystone S7602 2kW FM Transmitter embodies the renowned modular architecture for which Eddystone Broadcast transmitters are known. Here’s a detailed overview of its features and specifications:

Features:

1. Modular Architecture: Utilizes 300W hot-pluggable Power Amplifier modules, allowing for the removal of amplifiers with minimal reduction in output power. This modular design enhances servicing efficiency and minimizes downtime.
2. Efficient Power Supplies: Incorporates highly efficient hot-pluggable switched-mode power supplies (SMPSU), ensuring ease of servicing. The commonality of PA and SMPSU modules across the 7600 range reduces spares holding costs for networks and groups.
3. Compact and Replaceable Modules: Amplifier and PSU modules are replaceable on air, facilitating maintenance without interrupting broadcasting.
4. Compliance: Fully compliant with the ETS 300 384 specification for FM transmitters, ensuring adherence to industry standards.
5. System Flexibility: Easily configurable into various system architectures to accommodate different operational requirements.
6. Efficient Power Management: Utilizes highly efficient SMPS power supplies with power factor correction (PFC), optimizing energy usage.
7. Remote Control and Monitoring: Provides comprehensive remote control and monitoring facilities for efficient management and supervision of transmitter operation.
8. User-Friendly Interface: Features an LCD display for easy local monitoring, ensuring clear visibility of system parameters and status.

System Overview:

• Drive Input: Fed to an internal 8-way splitter, providing input drive to the PA modules.
• Power Amplifier Modules (E2021): Each module utilizes dual-packaged MOSFETs mounted on substantial heatsink assemblies with minimal airflow over RF components. Internal control and self-protection mechanisms ensure safe operation.
• Central Transmitter Controller/Monitor (E2023): Receives and displays internal parameters from individual power amplifier modules, enabling centralized monitoring and control.
• RF Output Combining: Outputs from the 8 power modules are combined via a highly efficient 8-way common rail Wilkinson combiner, ensuring optimal RF output.

Cooling Systems:

• Equipped with self-contained redundant cooling fans mounted on the rear of the transmitter. Ducting options are available, and bespoke cooling systems can be provided to meet specific requirements.

Specifications:

• Power Output: 2kW (adjustable to -6dB)
• Operating Frequency: 87.5 to 108 MHz
• RF Output Load Impedance: 50 ohms unbalanced
• RF Output Connector: 7-16 (female) DIN (7/8″ available on request)
• Maximum VSWR: Able to maintain full power at 1.9:1 before protection cuts in
• Mains Power Supply: Single-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 up to 3000M
• Overall Efficiency: Typically 60%

This transmitter offers a reliable and efficient solution for FM broadcasting, suitable for professional broadcasting environments with its high performance and ease of maintenance.