Aqua Broadcast, Cobalt C-700 FM Transmitter 700W

Aqua Broadcast, Cobalt C-700 FM Transmitter 700W

The COBALT C-700 is a robust 700W FM Broadcast Transmitter, boasting FCC part 73 LPFM and IC certifications. Its exceptional audio quality and clear sound from the Direct to Channel Digital technology with minimal manipulation, maintains audio integrity.

Operating on a fully customized LINUX OS system, this transmitter features a low-distortion modulator available across all COBALT FM Transmitter models. Input and output options include Analog, AES/EBU, Digital MPX (AES192), Ethernet, USB, GPIO, GPS Sync with built-in SFN capabilities.

A backup PSU is included as standard giving you redundancy right from the start.

Tailored for applications like Community Radio Gap-filling and scenarios, or as an exciter requiring high-quality audio, the COBALT C10 ensures market-leading sound. It comes equipped with a built-in 4-band Audio Processor, featuring Bass enhancement, Pilot protection, Wide AGC, and a range of expertly designed modern presets for an impressive start.

The modern design with its Ultra-clear RGB display and Intuitive Joystick controls with Haptic feedback and silicon buttons allow for swift setup, ensuring you get on the air in no time.

The advanced communication package includes an intuitive web interface and remote control via Ethernet (https). Full SNMP v1, v2c, and v3 management, with the ability to send emails, alerts, and remotely monitor audio, provide confidence with global control from any device with a web browser.

An advanced automations package enables settings changes based on conditions, SNMP, GPI, or through the scheduler function – all built into the system.

Audio monitoring is a new function that lets you stream confidence audio monitoring back to any web enabled device. Simply log in to your Cobalt Transmitter, and easily listen to audio form any source or the audio that’s being processed prior to entering the PA going on-air. This is great so you can hear what your market is listening to. Change the source to the Analog, Digital or a test tone and listen to that too. Great for checking in on Audio coming in from an STL or direct out of your mixer. If you have the optional Tuner or MicroMPX in your Cobalt, those too can also be monitored.

A Shoutcast / Icecast stream input is now included as standard, acting as a primary or back-up audio input.

• Direct to Digital Synthesized modulation
• FCC Part 73 Certified for LPFM, and IC Certification for Canada
• Linux OS
• RGB Screen
• 4 Band Audio Processor
• Redundant PSU
• Audio monitoring for confidence purposes by web browser
• Dynamic, UECP Compliant RDS Encoder
• ITU-R BS412.9 Limiter
• Digital MPX (AES192)
• Ethernet Control with HTTPS
• SNMP v1, v2c, v3
• Advanced Automations and configurations
• Scheduler
• Audio Failover and Silence Detection
• Backup Audio player via USB
• Shoutcast / Icecast Stream input
• GPS Sync for SFN

Options

1. MicroMPX
2. MicroMPX SFN
3. Tuner
4. 2wcom MOIN CODEC
5. 6 Band Audio Processor
6. 48V DC Power input

GENERAL

• Output Power (W): 700W
• Range (W): 200-700W
• RF Output connector: 7/16 DIN (Female)
• Input ACV @ 50/60Hz: 100-240
• Power Connector: IEC 13A filtered
• Temperature controlled fan: 1
• Power supplies: 2 (Including one backup)
• Dimensions WxDxH: 19 x 18 x 2RU (3.5")
• Weight: 7.2kg / 15.87lb

MODULATOR

• Transmitter type: Solid-state FM Stereo transmitter
• Modulator: Direct-to-channel (DDS)
• RF Output Frequency Range: VHF Band II, 87-108MHz
• RF Frequency Steps: 100kHz
• Frequency Stability: ±1 ppm or ±150Hz in 0-50⁰C range with internal 10MHz clock reference
• FM Modulation Range Capability: 75kHz default, 100% modulation user adjustable up to 105kHz 140%), maximum 300kHz

RF

• Power Stability: ≤ ± 0.25dB
• Asynchronous/AM noise: ≤ -60dB
• Synchronous AM s/n ratio: ≤ -60dB
• RF Harmonic and Spurious Suppression: Meets ETSI requirements
• VSWR operation: Fully protected against gradual or sudden VSWR conditions. Proportional power reduction from VSWR 1.5:1

STEREO ENCODER

• Performance: 400Hz/1kHz test tones at modulation level ≤75kHz
• Modes: Stereo, Mono L+R, Mono L, Mono R
• Frequency response: 20Hz-15kHz ±0.02dB
• Pre-emphasis: 0, 50 or 75μs
• Pilot tone: 19kHz, adjustable level 0-12%
• Subcarriers suppression: ≤ -70dB
• Stereo separation: ≥75dB AES/EBU input, ≥70dB Analogue input
• Stereo SNR: ≥80dB with 75us de-emphasis, ≥75dB without de-emphasis, both inputs
• Stereo THD+N: <0.03%
• Crosstalk: ≥70dB, between L+R and L-R due to channel matching, both inputs

MONO PERFORMANCE

• Frequency response: 20Hz - 15kHz ±0.02dB
• Pre-emphasis: 0, 50 or 75 µs
• Mono SNR: ≥75dB AES/EBU input, ≥70dB Analogue input
• Mono THD+N: ≤0.002% analogue input, ≤0.001% AES input, with 75us de-emphasis

ANALOG MPX INPUT PERFORMANCE

• Frequency response: 10Hz-53kHz ±0.03dB, 53kHz-70kHz ±0.3dB
• FM SNR: 10Hz-53kHz ±0.03dB, 53kHz-70kHz ±0.3dB
• THD+N: ≤0.003% with 75us de-emphasis

DIGITAL MPX INPUT PERFORMANCE

• Frequency response: -90kHz ±0.005dB
• FM SNR:≥100dB, with 75us de-emphasis
• THD+N: ≤0.001% with 75us de-emphasis

AUDIO INPUTS

• Analog: 2 x XLR female, 10kΩ impedance, level adjustable 0-24dBu
• Digital: 24dBu AES/EBU via RJ45 per StudioHUB+, level adjustable -20-0dBFS, sampling rates 32-192 kHz

AUDIO OUTPUT

• Headphones Out: 1/4" (6.3mm) female stereo socket, software adjustable volume, minimum load impedance 16Ω

WIDEBAND INPUTS

• Analog MPX: BNC, 10kΩ impedance, level adjustable 0-12dBu
• Digital MPX: AES/EBU via RJ45 per StudioHUB+, level -20-0dBFS, sampling rate 192kHz left channel
• Analog RDS: BNC, 10kΩ impedance, level adjustable from 0.1-10Vpp

WIDEBAND OUTPUTS

• Analog MPX: BNC, 10kΩ impedance, level adjustable 0-12dBu
• Digital MPX: BNC, 10kΩ impedance, level adjustable 0-12dBu

RDS GENERATOR

• Type: Fully Dynamic RDS/RDS2/RBDS Generator
• Protocols: ASCII commands, UECP protocol and X-Command Multi-port architecture
• Ports: UART over USB-B & Ethernet

COMMUNICATION AND CONTROL

• 10MHz input: BNC, 50Ω terminated
• 1PPS input: BNC, 50Ω terminated
• RF sample output: SMA, 50Ω, -30dBc
• UART over USB: USB-B, system control
• USB: 2 x USB-A, storage & FW upgrade
• Ethernet: 1 x RJ45
• RS232: DB25 shared connector, system control
• GPIO: DB25 shared connector, 8 x output & 8 x input, all optically isolated.
• Interlock/RF Mute: DB25 shared connector, programmable logic/polarity
• Analog voltage output: DB25 shared connector, 4-channel 0-5V range