Aqua Broadcast Cobalt C‑1000 1000W Digital FM Transmitter

Product Overview

The Aqua Cobalt C-1000 is a fully featured 1000W FM broadcast transmitter designed for main station, LPFM and translator duties where high power, excellent sound and solid redundancy are essential. Its direct-to-channel DDS modulator, running on a customised Linux OS, delivers very low distortion and outstanding spectral cleanliness, while integrated 4‑band audio processing and ITU‑R BS412 limiting provide consistent loud, clean audio. With analogue and AES/EBU audio inputs, digital MPX (AES192), dynamic RDS/RBDS and built‑in SFN synchronisation, the Aqua Cobalt C-1000 offers a complete “all‑in‑one box” solution for modern FM infrastructures.

Aqua Cobalt C-1000 Key Features

• • 1000W solid-state FM stereo transmitter using direct-to-channel DDS modulation for superior audio quality and low phase noise.

• • Adjustable RF output from low power up to 1kW with 7/16″ DIN RF connector, high AC efficiency and variable‑speed fan cooling.

• • VHF Band II coverage from 87–108MHz in 100kHz steps with ±1ppm frequency stability from an internal 10MHz reference.

• • Integrated stereo encoder with selectable pre‑emphasis, 20Hz–15kHz ±0.02dB response and stereo separation up to 75dB for AES/EBU sources.

• • Onboard 4‑band audio processor featuring AGC, multiband compression, bass enhancement and ITU‑R BS412 limiting for competitive on‑air loudness.

• • Dynamic, UECP-compliant RDS/RDS2/RBDS encoder plus wideband analogue and digital MPX inputs/outputs with MPX power limiting.

• • Multiple audio paths including analogue stereo, AES/EBU digital audio, digital MPX, plus AES192 composite-over-IP workflows.

• • GPS/10MHz/1PPS inputs for SFN timing, RF sample output and comprehensive GPIO for alarms, changeover and remote automation.

• • Advanced remote management with HTTPS web interface, Ethernet control, SNMP and email alerts for engineering teams.

• • Rugged 2U chassis with easy access modules, variable‑speed fans and high efficiency design to minimise maintenance and operating costs.

• • Mono SNR ≥75dB (AES/EBU), ultra‑low THD+N down to 0.001% on digital paths and excellent AM noise performance for clean transmission.

Applications

Deploy the Aqua Cobalt C-1000 as the main 1kW transmitter for regional FM broadcasters, as a powerful LPFM site, or as an exciter driving higher‑power amplifiers where pristine audio and SFN capability are required. The combination of DDS modulation, built‑in multiband processing, dynamic RDS and rich remote control makes the Aqua Cobalt C-1000 ideal for professional broadcasters wanting a compact, future‑proof 1000W solution with low total cost of ownership.

Combine the Aqua Cobalt C-1000 with suitable RF infrastructure from our FM Antennas or FM Antenna Packages categories. For more Aqua Broadcast products related to the Aqua Cobalt C-1000, visit our Aqua Broadcast brand page and browse the main FM Audio processors section for compatible processors.