Aqua Cobalt A-700 – 700 Watt FM Power Amplifier

Product overview

The Aqua Cobalt A-700 Amplifier is a compact, solid-state RF power stage designed to deliver stable 700W output in modern FM broadcast systems. It is intended for use within FM transmitters where high efficiency, low distortion and robust VSWR protection are critical. Building on the Aqua Broadcast Cobalt platform, it offers engineers a dependable module for medium-to-high power transmitters and modular architectures. As part of the wider Aqua Broadcast product line, it ensures consistent RF performance and familiar service procedures across your network.

Key features

• Rated for 700W FM RF output with adjustable power control
• Solid-state Class AB/LDMOS RF design for high efficiency and linearity
• Broadband VHF Band II operation for 87–108MHz systems
• Integrated VSWR, over-current and over-temperature protection
• Front-panel status LEDs and metering for quick diagnostics
• Optional remote monitoring via Ethernet or GPIO interfaces
• Compact 19-inch rackmount chassis with force-air cooling design
• Optimised to pair with Cobalt exciters and system controllers

Connectivity and I/O

The Aqua Cobalt A-700 Amplifier provides an RF input from a low-power exciter and a 50Ω RF output through a high-power coaxial connector sized for 700W service. Rear-panel connections typically include mains AC input, remote interlock, telemetry contacts and, where fitted, Ethernet or serial ports for monitoring and control.

In operation

In daily operation, the amplifier sits downstream of the exciter or integrated transmitter, delivering clean, stable RF power to the antenna system with minimal intervention. Engineering staff benefit from clear status indication, predictable gain and fast protection response, making it suitable for main, backup or translator sites that demand continuous service. Its efficient cooling and rugged RF design help maintain rated power in demanding environments, reducing maintenance intervals and improving overall system uptime.