Aqua Broadcast Cobalt C‑50 50W Digital FM Transmitter

Product Overview

Цей Aqua Cobalt C-50 is a robust 50W digital FM broadcast transmitter designed for LPFM services, community radio, drive‑in events and as a high‑quality exciter in larger systems. Running on a fully customised Linux OS, its direct‑to‑channel DDS modulator delivers exceptionally clean audio and rock‑solid RF stability, while an integrated stereo encoder, dynamic RDS generator and 4‑band audio processor provide a complete on‑air package in a compact 1U chassis. Multiple inputs including analogue stereo, AES/EBU and digital MPX (AES192), along with Ethernet, USB, GPIO and GPS sync, make the Aqua Cobalt C-50 easy to integrate into both traditional and AoIP-based facilities.

Aqua Cobalt C-50 Key Features

• • 50W solid-state FM stereo transmitter using direct-to-channel DDS modulation for low distortion and excellent spectral performance.

• • Adjustable RF output typically from a few watts up to 50W with N-type RF connector, around 30% AC–RF efficiency and temperature‑controlled fan cooling.

• • VHF Band II operation from 87–108MHz with 50/100kHz steps and ±1ppm frequency stability from an internal 10MHz reference.

• • Integrated stereo encoder and fully dynamic RDS/RDS2/RBDS generator supporting ASCII and UECP protocols with multi‑port USB/Ethernet control.

• • Analogue stereo audio, AES/EBU digital audio and digital MPX inputs, plus wideband analogue/digital MPX I/O with adjustable level for external processors.

• • Onboard multi‑band audio processor with ITU‑R BS412 limiter, loudness presets and optional upgrade to a 6‑band processor for more aggressive sound.

• • GPS sync and SFN‑ready operation, with scheduler, automation, audio failover, silence detection and USB backup audio player.

• • Remote management via secure HTTPS web interface, SNMP v1/v2c/v3, email alerts and intelligent GPIO for full off‑site monitoring and control.

• • Mono performance from 20Hz to 15kHz within ±0.02dB, mono SNR ≥75dB (AES/EBU) and THD+N as low as 0.001% on digital input.

Applications

Use the Aqua Cobalt C-50 as the main transmitter for LPFM, community and campus stations, for drive‑in cinemas and sports events, or as a clean exciter driving external RF amplifiers. Its combination of DDS exciter, integrated processing, dynamic RDS and SFN-ready GPS sync makes the Aqua Cobalt C-50 an excellent choice wherever 50W output, premium audio quality and reliable remote control are required in a compact 1U package.

Pair the Aqua Cobalt C-50 with suitable antennas and RF amplifiers in our Комплекти FM-антен and FM Amplifiers categories to build scalable systems from 50W upwards. To explore more Aqua Broadcast products related to the Aqua Cobalt C-50, visit our Aqua Broadcast brand page and the main FM Audio Processors category for compatible FM processors.