Inverto Black Premium Quad lnb (L921)
Inverto Black Premium Quad lnb (L921)

The BLACK PremiumTM is a high-performance, high-end range of LNB products. The units are specially selected from the production line and feature an outstanding low noise figure, very low gain variation, high cross polarization and cross-talk isolation and sets new standards of quality and reliability in the industry. This stylish and compact size range of LNBs includes 40mm L-shape Single, Twin, Quattro and Quad models

The LNB enables the reception of signals from one satellite and its distribution to maximum four Set Top Boxes with Single Tuner (or 2 STBs with Twin Tuner).

  • Very low Noise Figure
  • Low Phase Noise, DVB-S2 (HDTV) compliant
  • Low Power Consumption
  • High Cross Polarization Isolation
  • High Frequency Stability


Box quantity: 40


Low Band Input Frequency Range 10.7 ~ 11.7 GHz
Low Band Output Frequency Range 950 ~ 1950 MHz
LO Frequency 9.75 GHz
High Band Input Frequency Range 11.7 ~ 12.75 GHz
High Band Output Frequency Range 1100 ~ 2150 MHz
Noise Figure 0.2 dB Typ. (0.7 dB Max.)
LO Initial Accuracy +/- 1.0 MHz Max
LO Temperature Drift +/- 3.0 MHz Max
LO Phase Noise @ 10K Hz - 85 dBc / Hz Max
Conversion Gain 55 dB Min
Gain Ripple +/- 0.75 dB
Gain Variation +/- 4 dB Max
Image Rejection 40 dB Min
1 dB Compression Point (O/P) 0.0 dBm Min
Cross talk
Control Signals Ca [ V ] 11.0 ~ 14.0 V
Control Signals Cb [ H ] 16.0 ~ 20.0 V
Control Signals Cc [Band switching] 22 +/- 4 kHz
Output VSWR 2.5 : 1
Radiated Interference
DC Power
Working Temperature
Output Impedance (connect to STB)
Output connector