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INVACOM LNB QPH-031 Quad Output
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QPH-031
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Detailed Description
Invacom QPH-031 Quad Polar LNB

This Invacome LNB is a High performance LNBF where the signal strength is poor. This LNB is for the simultaneous reception of Circular and Linear Satellite at the same orbital position. 2 outpurs Linear polarized (V & H) switched. 2 outputs Circular polarized (LHC & RHC) switched.
The Quad INvacom has a noise figure of 0.3db and gain of 50-60db which is much better than most LNBF's on the market. They also have a defect rate well below 0.001%
If you've got a motorized dish this is the ONLY LNB you need!
- 4 fully switched outputs: Circular, Linear, Circular, Linear
- Reception of both LINEAR/FTA (10750) and CIRCULAR/DBS (11250) polarization
- Linear: 30°, 43°, 87°, 95°, 97°, 101°, 121°, 123°W, etc
- Circular: 61.5°, 72.7°, 77°, 82°, 91°, 110°, 119°, 129°, 148°W, etc

This LNBF is a combination of two dual output Circular and Linear LNBFs in one single unit. You can use it for Ku band FTA, or DSS service. The LNBF provides simultaneous reception of both linear and circular polarized signals with a 0.3dB noise figure and 55dB gain! This 2nd Generation version offers Linear (FSS) 11.7 – 12.7GHz & Circular (BSS) 12.2-12.7.

Ideal for motorized dishes. Eliminates the need to use multiple dishes. Perfect for fixed dish reception of DSS and AMC4 on 101W satellite. The QPH-031 can be mounted on almost any dish due to its 40mm diameter flange.


LNB is A low-noise block converter (LNB, for low-noise block) is the (receiving or downlink) antenna of what is commonly called the parabolic satellite dish commonly used for satellite TV reception. It is functionally equivalent to the dipole antenna used for most other TV reception purposes, although it is actually waveguide based. Whereas the dipole antenna is unable to adapt itself to various polarization planes without being rotated, the LNB can be switched electronically between horizontal and vertical polarization reception. The LNB is usually fixed on or in the satellite dish, for the reasons outlined below. The corresponding component in the uplink transmit link is called a Block upconvert (BUC).
Satellites use comparatively high radio frequencies to transmit their signals.
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