Invacom QDH-031 Quad LNB

The Invacom QDH-031 Quad LNB it's typically used with fixed satellite antennas in areas where the signal strength is poor.

This Universal Quad LNB it´s a high performance universal LNB with an integrated feed-horn, and a feed diameter of 40 mm. Some customers say that the Invacom Quad LNBs outperform the single and twin LNB in low signal areas.

Technical specifications:

• Input frequency: 10.70 - 12.75 GHz
• Local Oscillator Frequency (LOF): 9.75 / 10.60 GHz
• Noise figure: real 0.3 dB typ
• Polarization decoupling: 30 dB
• Gain: 50 - 60 dB
• Feed diameter: 40 mm feed
• Switching band: 0/22 kHz
• Vertical switching (V): 11.5 - 14.0 V
• Horizontal switching (H): 15.5 - 19.0 V
• Current consumption: 200 mA typ
• Housing color: ivory
• Up to 4 satellite receivers

Why Invacom LNBs perform so well?

Most people know how important LNB noise figure is as a measure of LNB performance. However, other parameters are also important contributors to overall signal quality.

Exact Feed Design. 

Designed with the latest 3D modelling software to ensure maximum energy transfer from the dish to LNB electronics. A precise and optimum Horn and Feed design will not affect the overall quoted noise figure, but will give a significant improvement in the overall performance.

Superior Phase Noise.

Compare Invacom's specification to other manufacturers, it is typically 10dB better. The cleaner the oscillator the higher the performance. 

Excellent Isolation.

In the centre of the satellite footprint, all transponders are typically the same strength. However, at the edges, there can be wide variations. To receive the weaker signals, multiple output LNBs require excellent isolation. Compare Invacom's isolation performance with other LNBs manufacturers

Very Low Spurious Levels.

All universal multiple output LNBs generate interfering spurious at 850 MHz and 1700 MHz. This spurious can knock week transponders at the same IF frequency. Invacom's spurious is typically superior by 10dB, due to advanced filter design using 3D filter modelling.

Positive Gain Slope.

To compensate for long cable runs, and helps prevent loss of channels due to 2nd harmonic distortion in the receiver.

Tested for Ultimate Reliability.

All Invacom's LNBs are electronically and pressure tested twice, at various stages of assembly. A sample of finished units are further tested at hot and cold temperature to ensure utmost reliability.