Aqua Cobalt A-300 – 300 Watt FM Power Amplifier

Product overview

The Aqua Cobalt A-300 Amplifier is a compact, solid-state RF stage designed to deliver stable 300W output into modern FM broadcast systems. It is engineered for integration into FM transmitters where high efficiency, low distortion and tight VSWR protection are critical. This robust design extends the Aqua Broadcast Cobalt platform, giving engineers a reliable building block for medium-power transmitters and modular systems. As part of the wider Aqua Broadcast product line, it maintains consistent RF performance and serviceability across your network.

Key features

• Rated for 300W FM RF output with wide control range
• Solid-state Class AB/LDMOS RF design for high efficiency
• Broadband VHF Band II operation for 87–108MHz systems
• Integrated VSWR and over-temperature protection circuitry
• Front-panel status LEDs and metering for quick diagnostics
• Remote monitoring via Ethernet or GPIO interface options
• Compact 19-inch rackmount chassis with efficient forced-air cooling
• Designed to pair with Cobalt exciters and composite transmitters

Connectivity and I/O

The Cobalt A-300 provides an RF input from a low-power exciter and a 50Ω RF output via a high-power coaxial connector, typically 7/16 or N-type depending on configuration. Rear-panel terminations support mains AC input, remote interlocks, telemetry contacts and, where fitted, Ethernet or serial links for control and status.

In operation

In daily use, the amplifier sits downstream of your exciter or integrated transmitter, delivering clean, stable power into the antenna system with minimal operator intervention. Engineers benefit from fast visual feedback, predictable gain and comprehensive fault protection, making it suitable for main, backup or translator sites where continuous service is essential. Its efficient cooling and robust RF design help maintain output power in demanding environments, reducing maintenance time and improving overall system uptime.