Intellian Terrasat Ku-band 40W (IBR137145-2NA040W) VCM-1503
The Intellian VCM-1503 is a Terrasat IBUC 2 block upconverter for compatible maritime and fixed VSAT systems. Model IBR137145-2NA040W covers the full 13.75–14.5 GHz Ku-band uplink range and converts a 950–1,700 MHz L-band modem signal for satellite transmission.
The unit provides at least 40W of RF output at P1dB and combines the BUC, solid-state amplifier, AC power supply, and monitoring functions in a weatherized outdoor enclosure. Ethernet, RS-232/485, and FSK interfaces support remote configuration, operating-status checks, and system diagnostics.
Satellite Phone Store supplies Intellian and Terrasat VSAT components and can help confirm the antenna model, Ku-band frequency plan, power requirements, and management interfaces before ordering.
Description
Full Ku-Band Frequency Coverage
The VCM-1503 operates across the 13.75–14.5 GHz full Ku-band uplink range and accepts a 950–1,700 MHz IF signal. The model uses non-inverting frequency conversion with a 12.8 GHz local oscillator.
This frequency range supports compatible networks operating across both standard and extended Ku-band uplink frequencies.
40W RF Output
The Terrasat IBUC 2 provides a minimum P1dB output of +46 dBm, equivalent to 40W. The standard-gain configuration provides at least 77 dB of small-signal gain, with a 30 dB adjustment range in 0.1 dB increments.
Typical applications include:
- Commercial maritime broadband
- Offshore operational communications
- Voice and business data services
- Fixed satellite terminals
- Replacement of an existing compatible 40W Terrasat BUC
Actual link performance depends on the antenna, modem, satellite network, service plan, and installation conditions.
Integrated Monitoring and Control
The IBUC 2 platform supports Ethernet management through an RJ45 connection, along with RS-232/485 and handheld-terminal access through an MS-type connector. FSK monitoring and control can also be multiplexed over the transmit IF cable.
Supported management functions help installers and network operators configure gain, review alarms, monitor transmit performance, and diagnose system conditions without direct access to the antenna-mounted unit.
AC-Powered Outdoor Installation
The model code identifies this configuration as AC powered. It accepts 100–240V AC at 50/60 Hz and consumes approximately 420 VA at rated 40W output.
Its outdoor enclosure is designed for antenna-mounted operation in condensing humidity and temperatures from -40°C to 55°C. The compact installation near the feed assembly helps avoid the RF losses associated with long waveguide runs.
Technical Specifications
Power
- RF output at P1dB: 40W / +46 dBm minimum
- Input power: 100–240V AC, 50/60 Hz
- Power consumption: 420 VA
- Level stability with ALC: ±0.5 dB
- Output power detector range: Rated output to -20 dB
- Output power reading accuracy: ±1 dB maximum
Dimensions
- 26.7 × 15.2 × 15.5 cm / 10.5 × 6.0 × 6.1 in.
Weight
- 6.1 kg / 13.5 lbs
Durability
- Construction: Weatherized outdoor enclosure
- Amplifier technology: GaAs
- Operating temperature: -40–55°C / -40–131°F
- Relative humidity: 100% condensing
- Maximum operating altitude: 3,000 m / 10,000 ft
- Out-of-band compliance: ETSI EN 301 428/430 and MIL-STD-188-164C
Included
- Intellian VCM-1503 Terrasat IBR137145-2NA040W 40W Ku-Band IBUC 2
Additional
- Product type: Intelligent block upconverter
- Manufacturer: Terrasat Communications
- Terrasat model: IBR137145-2NA040W
- Intellian part number: VCM-1503
- Product platform: IBUC 2
- Frequency band: Full Ku-band
- Output class: 40W
Data Network
- RF output frequency: 13.75–14.5 GHz
- IF input frequency: 950–1,700 MHz
- Local oscillator frequency: 12.8 GHz
- Frequency conversion: Non-inverting
- Reference source: Internal 10 MHz standard reference
- Small-signal gain: 77 dB minimum
- Gain adjustment: 30 dB in 0.1 dB steps
- Full-band gain flatness: 4 dB peak-to-peak maximum
- 36 MHz gain flatness: 1.5 dB peak-to-peak maximum
- 1 MHz gain flatness: 0.25 dB peak-to-peak maximum
- Input VSWR: 1.5:1 maximum
- Output VSWR: 1.3:1 maximum
- Third-order intermodulation: -25 dBc maximum
- In-band spurious output: -65 dBc
- Harmonics: -50 dBc maximum
Interfaces
- IF input: N-type female, 50 ohms
- RF output: WR-75 grooved waveguide
- Network management: Ethernet through RJ45
- Serial management: RS-232/485 through MS-type connector
- Additional management: FSK multiplexed over the transmit IF cable
- Supported management protocols: HTTP, Telnet, and SNMP
