Cobalt C10-I / 10W FM Transmitter

  • 4 Band Audio Processing
  • Dynamic, UECP Compliant RDS Encoder
  • Direct to Digital Synthesized modulation
  • Digital MPX Encoder
  • MPX Power Limiter
  • Linux OS
  • Ethernet Control and SNMP
  • GPS Sync
  • Standard Auxiliary DC power input
  • Industrial chassis
  • AC and 24-48V DC compatible
  • DDS Exciter

$ 3690 / € 3390 / £ 2890

  • 4 Band Audio Processing
  • Dynamic, UECP Compliant RDS Encoder
  • Direct to Digital Synthesized modulation
  • Digital MPX Encoder
  • MPX Power Limiter
  • Linux OS
  • Ethernet Control and SNMP
  • GPS Sync
  • Standard Auxiliary DC power input

OPTIONS

    • Dante / AES67 audio
    • µMPX
    • 5 Band Audio Processor

GENERAL

Output Power (W)  15W
Range (W) 1-15W
RF Output connector N-Type (Female)
Input ACV @ 50/60Hz 100-240 
Power Connector IEC 13A filtered
Power consumption ~50W @ max power
AC-RF efficiency typ ~30%
Temperature controlled fan 1
Power supplies 1
Dimensions WxDxH (inch) 6.5 x 12 x 5.1
Dimensions WxDxH (cm) 16.6 x 31.2 x 13.2
Weight 3.7kg / 8.14lb

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

ANALOGUE 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

Analogue 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

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

WIDEBAND INPUTS

Analogue 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
Analogue voltage output DB25 shared connector, 4-channel 0-5V range

ENVIRONMENTAL

Altitude 15,000 ft / 4,420m AMSL
Temperature range 0 to +45ºC working. -10 to +50ºC storage
Humidity 95% @ 35ºC, non-condensing
   
   
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    AQUA BROADCAST COBALT INDUSTRIAL C10-I Datasheet 050224
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