SpaceBridge SBB0400C 400W C-Band Outdoor GaN BUC
• RF Frequency Range:
5.85–6.425 GHz, 5.85–6.725 GHz or 6.725–7.025 GHz
• IF Frequency Range:
950–1525 MHz, 950–1825 MHz or 1275–1575 MHz
• LO Frequency: 4.9 GHz or 5.45 GHz
• Rated Output Power: 400 W (56 dBm)
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SpaceBridge SBB0400C 400W C-Band Outdoor GaN BUC
The SpaceBridge SBB0400C is a 400 W C-band outdoor block upconverter (BUC) powered by Gen III GaN technology, designed for broadcast contribution, DTH distribution, cellular backhaul and HTS/UHTS VSAT hubs. Available in Standard, Extended and INSAT C-band configurations, it provides high-linearity amplification for multicarrier and multi-transponder applications. Its IP67 enclosure, built-in 1:1 and 2:1 redundancy, and Ethernet monitoring support reliable operation in demanding outdoor installations.
Frequency Options
| Model / Configuration | RF Frequency Range | IF Frequency Range | LO Frequency |
| SBB0400CS — Standard C-band | 5.850–6.425 GHz | 950–1525 MHz | 4.9 GHz |
| SBB0400CX — Extended C-band | 5.850–6.725 GHz | 950–1825 MHz | 4.9 GHz |
| SBB0400CI — INSAT C-band | 6.725–7.025 GHz | 1275–1575 MHz | 5.45 GHz |
Technical Specifications
Saturated Output Power: 400 W / 56 dBm min.
Single-Carrier Linear Output Power: 250 W / 54 dBm min.
Two-Carrier Linear Output Power: 200 W / 53 dBm min.
Small-Signal Gain: 75 dB typ.
Gain Control: 20 dB min. dynamic range, adjustable in 0.1 dB steps
IF Input Connector: N-type female, 50 Ω
RF Output Connector: CPR137 grooved waveguide flange, threaded 10-32 UNF
Reference Frequency: External 10 MHz; optional internal high-stability reference
AC Input Voltage: 196–265 VAC
AC Frequency Range: 47–63 Hz
Power Consumption at Saturated Output: 1500 W
Power Consumption at Two-Carrier Linear Output: 1310 W
Monitoring and Control: Ethernet web interface, SNMP, RS-232, RS-485 and Form-C contacts
Redundancy: Built-in 1:1 and 2:1
Cooling: Forced air
Operating Temperature: −40 °C to +55 °C
Environmental Protection: IP67
Dimensions: 508 × 381 × 139 mm
Weight: 26.4 kg / 58 lb
Key Features
• Gen III GaN technology for high efficiency and linearity
• Standard, Extended and INSAT C-band options
• Supports multicarrier and multi-transponder applications
• Built-in 1:1 and 2:1 redundancy without an external redundancy controller
• High-precision true RMS output power meter
• Ethernet web interface and SNMP support
• Output overdrive, output VSWR and thermal shutdown protection
• Optional phase combining of two units for 700 W saturated output with 400 W fail-safe operation
• Optional internal high-stability 10 MHz reference
• Optional 1U remote control panel for 1:1 redundancy
• Optional 2U remote control panel for phase combining and 2:1 redundancy
SpaceBridge SBB0400C
- Transmit Band
- 5.850 - 6.425 GHz
- Transmit Band
- 6.725 - 7.025 GHz
- Transmit Band
- 5.850 - 6.725 GHz
- Power Output
- 400W
Specific References
• RF Frequency Range:
5.85–6.425 GHz, 5.85–6.725 GHz or 6.725–7.025 GHz
• IF Frequency Range:
950–1525 MHz, 950–1825 MHz or 1275–1575 MHz
• LO Frequency: 4.9 GHz or 5.45 GHz
• Rated Output Power: 400 W (56 dBm)