He actually wanted Inverto LNB. But only this quad port is available easily in eBay india online. Other models are not available in any Indian online sites.. price wise it is cheap comparing the black ultra that I bought from amazon uk. Almost same price. But I didn't choose it since I was not sure about output quality of this model. Now vicky bro is saying he is getting 8% increase in signal which is very good..
here's a comparison between this quad inverto lnb and black ultra
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Quad Inverto
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Noise Figure 0.3 dB Typ. (0.7 dB Max.)
Conversion Gain 55 dB Min.
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Black Ultra
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Noise Figure 0.2 dB Typ. (0.7dB Max.)
Conversion Gain 60 dB Min.
Noise figure shud be less, gain shud be high...... clearly black ultra is a better lnb than this quad one.
But yes, specification wise, this quad is also mighty, and easily outperforms local lnb brands, thats why the increase in signal :s