Eddystone S7605C

The Eddystone S7605C is a 5kW FM transmitter known for its modular architecture and efficiency. Here are the key features and specifications:

Features:

1. Modular Design: Utilizes new higher efficiency 300W hot-pluggable Power Amplifier modules, allowing for easy removal with minimal reduction in output power.
2. Efficient Power Supplies: Incorporates hot-pluggable switched mode power supplies (SMPSU) for efficient operation and ease of servicing.
3. N Way RF Power Combining System: Uses Eddystone’s patented N way combiner system for enhanced performance and reliability.
4. Compliance: Fully compliant with ETS 300 384 specification for FM transmitters.
5. System Flexibility: Easily configurable into various system architectures to suit different broadcasting needs.
6. Remote Control and Monitoring: Comprehensive remote control and monitoring facilities for efficient operation and maintenance.
7. LCD Display: Equipped with an LCD display for easy local monitoring.

System Overview:

• Drive Input: Input is fed to an internal 16-way splitter providing the PA module input drive.
• Power Amplifiers (E2021): Each E2021 Power amplifier uses dual packaged MOSFETs mounted on a substantial heatsink assembly. Internal control and self-protection mechanisms are integrated into each module.
• Combining System: Outputs from the power modules are combined via the N-way combiner before being fed to the output coupler and harmonic filter.
• Cooling: Self-contained redundant cooling fans are mounted on the rear of the transmitter. Ducting options are available, and bespoke cooling systems can be provided for special requirements.

Specifications:

• 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: Able to maintain full power at 1.5:1 before protection cuts in
• 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 up to 3000M
• Overall Efficiency: Typically 63%

This transmitter offers high performance, reliability, and ease of maintenance, making it suitable for various FM broadcasting applications.