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Terrasat Communication

Terrasat IBUC 2 Ku-band 4W Full Block Upconverter

Terrasat IBUC 2 Ku-band 4W Full Block Upconverter

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Terrasat IBUC 2 Ku-band 4W Full Block Upconverter


The latest evolution of the IBUC has all of the advanced features and reliability of the original IBUC in a new, more compact package.

IBUC 2 offers significant benefits:

  • High performance in a compact, cost effective package
  • Simple design and installation
  • Simplified 1+1 configuration

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

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

The IBUC 2 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.

IBUC Advantages

Integrated BUC/SSPA for higher performance and reliability. High linearity. DC power can be supplied via IFL coax or separate DC connector for 4 W through 16 W 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 detected. Low phase noise better than 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. 30 dB User-adjustable gain in 0.1 dB steps preserves modem dynamic range.

Advanced user interfaces

  • TCP/IP HTTP with embedded Web pages via RJ-45 connector.
  • SNMP
  • TELNET through TCP/IP
  • FSK through TX IFL cable
  • RS232/485 serial port
  • Hand-held terminal
Ku-Band Intelligent Block Upconverter
Frequency range
Band 2 
Full Ku 13.75 to 14.50 GHz
950 to 1700 MHz
VSWR / Impedance 1.5:1 max / 50 Ohm
Input Connector Type N female (50 Ohm)
Input Connector options Type F (75 Ohm), TNC (50 Ohm)
Input power detector -55 to –20 dBm
Small Signal Gain (L-band to RF) with attenuator set to 0 dB
4 W 67 dB min
Attenuator range 30 dB variable in 0.1 dB steps
Gain flatness
Full band 
Band 1 & 3
Band 2
3 dB p-p max
4 dB p-p max
36 MHz 
Band 1 & 3
Band 2
1 dB p-p max
1.5 dB p-p max
1 MHz 
Band 1 & 3
Band 2
0.25 dB p-p
0.25 dB p-p
Gain variation over temperature
Open loop 3 dB p-p max
With AGC 1 dB p-p max
RF Output
Interface WR75 cover with groove
VSWR 1.5:1 max
Rated output power
4 W 
+36 dBm min
34.5 dBm
Plinear is the maximum linear power as defined by MIL-STD-188-164B.
IMD3 (2 carriers, 3 dB TOBO) -25 dBc max
Level stability with ALC ±0.5 dB
Output power detector range Rated power to –20 dB
Power reading accuracy ±1.0 dB max
In Band
Out of Band
-65 dBc
Complies with EN 301 428/430
and MIL-STD 188-164B
Harmonics -50 dBc max
Output Noise Power Density TX < -78 dBm/Hz
RX < -145 dBm/Hz
SSB Phase Noise
External ref
-115 dBc/
-50 dBc/
External ref
-140 dBc/
-75 dBc/
1 k 
External ref
-150 dBc/
-85 dBc/
10 k 
External ref
-155 dBc/
-90 dBc/
100 k 
External ref
-95 dBc/
1 M 
External ref
-110 dBc/
External Reference (multiplexed on TX I FL)
Frequency 10 MHz
Level -12 to +5 dBm
Internal Reference - optional
Local Oscillator Frequency
Sense Non-Inverting
Band 1 13050 MHz
Band 2 12800 MHz
Band 3 11800 MHz
IBUC Power Supply
48 ± 11 VDC
100 to 240 VAC
Option for 4 W, 8 W 24 ± 4 VDC
DC via coax available on 4 W - 16 W
Power Consumption
4 W 
77 W
85 VA
8 W 
80 W
115 VA
Monitor and Control
Ethernet (HTTP , Telnet, SNMP ) via RJ -45 connector,
RS232/485, Hand-held Terminal via MS-type connector,
FSK multiplexed on TX I FL.
Operating temperature
4W - 25W -40oC to +60oC
30W - 50W -40oC to +55oC
Relative humidity 100% condensing
Altitude 10,000 ft., (3,000 m) ASL
4 W - 8 W 
DC powered
AC powered
10.5 x 6 x 3.8 in., 9.3 lbs
10.5 x 6 x 4.2 in., 10.5 lbs
40W, 50W dimensions do not include isolator
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