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Terrasat Ku-Band Intelligent Block Upconverter (IBUC) 4 - 40W

  • Lower terminal cost
  • Simplified 1+1 configuration
  • Point-and-click configuration
  • Complete set of diagnostic tools

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Ku-Band Intelligent Block Upconverter (4 - 40W)

The Terrasat Intelligent Block Upconverter (IBUC) offers integrated BUC/SSPA packaging for higher performance and reliability.

IBUC Advantages

DC power can be supplied via IFL coax or separate DC connector for 4W through 16W models.

All models available with integral AC power supply or separate DC power supply.

Internal 10MHz reference option automatically switches to internal reference when external reference is not available.

Guaranteed rated output power across the entire operating temperature range and frequency band.

Low phase noise exceeds IESS308/309 requirements by a minimum of 5 dB.

Embedded web pages provide management for small networks using any web browser.

AGC or ALC circuits hold gain or output level constant.

16 dB User-adjustable gain in 0.1 dB steps preserves modem dynamic range.

Advanced user interfaces:

  • TCP/IP HTTP with embedded web pages.
  • SNMP
  • TELNET through TCP/IP
  • FSK through TX IFL cable.
  • RS232/485 serial port.
  • Handheld terminal.


IBUC offers significant benefits:

  • Low terminal cost
  • Simple design and installation
  • Superior RF performance
  • Simplified 1+1 configuration

New interfaces connect you to the IBUC's extensive M&C facilities for network management or local access. This powerful new M&C enables:

  • Trouble free commissioning with easy, point-and-click installation/configuration
  • Continuous verification of performance with time-stamped alarm history.
  • Simplified troubleshooting of terminal faults.

The IBUC comes with a complete set of diagnostic tools including:

  • 10 MHz input detector
  • Input voltage and current monitoring
  • Transmit L-Band input level detector
  • Transmit RF output level detector
  • User configurable thresholds and alarms

Unique to the IBUC are internal AGC and ALC functions that satisfy demanding applications with stringent specifications.

L-Band Input Frequency range
Extended Ku-Band (13.75 to 14.25 GHz) 950 to 1450 MHz
Standard Ku-Band (14.00 to 14.50 GHz) 950 to 1450 MHz
Super Extended Ku-Band (13.75 to 14.50 GHz) 950 to 1700 MHz
VSWR / Impedance 1.5:1 max / 50 ohms
Connector Type N female
Input power detector range -55 to -20 dBm
Absolute accuracy +/- 0.5 dB (CSM)
+/- 1.0 dB (Burst)
Gain Small Signal Gain (L-Band to RF) with attenuator set to 0 dB
2W 64 dB min
4W 67 dB min
8W 70 dB min
16W 73 dB min
Attenuator range
74 dB min
10 dB variable in 0.1 dB steps
Gain flatness
Full band 3 dB p-p max
36 MHz 1 dB p-p max
1 MHz 0.25 dB p-p max
Gain variation over temperature
Open loop 3 dB p-p max
With AGC 1 dB p-p max
RF Output Frequency Range
Extended Ku-Band 13.75 to 14.25 GHz
Standard Ku-Band 14.00 to 14.50 GHz
Super Extended Ku-Band 13.75 to 14.50 GHz
Interface WR75 UG cover with groove
VSWR 1.5:1 max
Rated output power (P1dB across temperature range and operating band)
2W +33 dBm min
4W +36 dBm min
8W +39 dBm min

+42 dBm min
+43 dBm min
IMD3 (2 carriers, 30 kHz apart, each at rated power minus 9 dB) -30 dBc max
Level stability with ALC +/- 0.5 dB
Output power detector range Rated power to -20 dB
Absolute accuracy +/- 0.5 dB (CSM)
+/- 1.0 dB (Burst)
Spurious Complies with EN 301 428
SSB Phase Noise
Offset External Reference :: IBUC
10 Hz -120 dBc/Hz :: -35 dBc/Hz
100 Hz -130 dBc/Hz :: -65 dBc/Hz
1 kHz -143 dBc/Hz :: -75 dBc/Hz
10 kHz -152 dBc/Hz :: -85 dBc/Hz
100 kHz -155 dBc/Hz :: -95 dBc/Hz
1 MHz -155 dBc/Hz :: -110 dBc/Hz
External Reference(multiplexed on TX IFL)
Frequency 10 MHz
Level -8 to +3 dBm
Local Oscillator Frequency
Standard and Extended Ku-Band 13050 MHz
Super Extended Ku-Band 12800 MHz
Sense Non-inverting
IBUC DC Supply
Multiplexed on TX IFL 2W, 4W, 8W
Connector Amphenol T3106 000 (all units)
Voltage / Current

+24 +/- 4 VDC +48 +/- 11 VDC
1.8A max @ 24VDC 1.0A max @ 48VDC
3.0A max @ 24VDC 1.5A max @ 48VDC
na 3.0A max @ 48VDC
na 6.5A max @ 48VDC
na 7.5A max @ 48VDC
Monitor and Control
FSK (multiplexed on TX IFL)
Output Level

650 kHz +/- 5%
+/- 60 kHz
-5 to -15 dBm (50 ohms)
Nominal Frequency

Locking range
Input sensitivity

650 kHz
+/- 32.5 kHz
-15 dBm (50 ohms)
Interfaces (RS232, RS485, TCP/IP and Handheld Terminal)
Connector MS3112E-14-19S
RS232/485 (2-wire)
Data rate
Data format

Selectable 1200 to 115,200 bps
8 data bits, no parity, 1 stop bit, ASCII protocol
Handheld terminal data rate 9600 bps
Operating temperature range -40°C to +60°C
Relative humidity 100% non-condensing
2W, 4W
16W, 20W

12.2" (L) x 7.2" (W) x 3.65" (H)
13.7" (L) x 7.2" (W) x 3.65" (H)
13.7" (L) x 7.2" (W) x 7.96" (H)
2W, 4W
16W, 20W

12 lbs
12 lbs
18 lbs
Name X