Aqua Broadcast, Cobalt C-2500 FM Transmitter 2500W

Aqua Broadcast, Cobalt C-2500 FM Transmitter 2500W

The COBALT C-2500 is a fully featured 2500W / 2.5kW FM Transmitter that has superior audio quality and sound clarity thanks to it‘s Direct to Channel Digital technology (DDS). Running on a fully customized LINUX OS system, this low distortion modulator is available on all models within the COBALT family of FM Transmitters. Inputs and outputs 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.

Ideal for many Medium power Broadcast applications where High quality audio is needed.

COBALT Medium Power Transmitters have an industry standard 7/8” EIA output, ready to connect to your Transmission line.

Powered by single phase or 3 phase power, and protected by a breaker at the rear, its quick and easy to connect to a new or existing system. COBALT Medium Power Transmitters are designed for durability and reliability with features such as redundant fans and hot-swap power supplies. The compact design also includes easily accessible, washable air filters on the front panels of the power supplies.

An optional DC Input lets you run the COBALT C2500 on a 48V DC power system and allows the telemetry and alarms functions to still be accessible in the event of a mains power failure that opens further possibilities for off-grid power options.

Radio market beating sound will let you stand out to your listeners, with its built-in 4 band Audio Processor with Bass enhancement, Pilot protection, Wide AGC and a whole bunch of expertly designed modern presets, so you sound great right from the start.

The modern design lets you easily read the Ultra-clear RGB display, and the intuitive Joystick controls with Haptic feedback and additional silicon buttons allows fast setup, getting you on the air even faster.

The advanced communication package with Intuitive web interface and remote control via Ethernet (https) lets you make changes or monitor the COBALT Transmitter. Full SNMP Version 3 management and the ability to send emails, alerts and monitor audio remotely gives you added confidence knowing you have full control from anywhere in the world on any device with a Web browser.

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): 2500W / 2.5kW
• Range (W): 2500W Adjustable
• RF Output connector: 7/8" EIA, 50 ohm
• Input ACV: 220 to 240 single phase or 208 or 240 three phase
• Temperature controlled fan: 3
• Power supplies: 3 (Including one backup)
• Dimensions WxDxH: 19 x 24 x 3RU (7”)
• Weight: 24kg / 53lb

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