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Originally Posted by 4x4jeep
What is the differents between Standard & Universal LNB?
Which one is better?
Thanks.
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I don't think "standard" really has an absolute meaning, other than what is typically used with big dish systems which use lnbs in a feed rather than lnbfs, usually with a LO freq of 5150 for
C band and 10750 for KU in the US. However with respect to how the Fortec receivers define "standard", which seems to mean an lnb or lnbf that has a single LO freq. On the other hand, a universal LNB typically has 2 local oscillators, which gives the lnbf a wider freq range. A standard lnb usually downconverts a 500 MHz wide block of freqs, for example if the LO freq is 10750, from 11700 to 12200, which it converts to 950-1450 MHz. In actuality, the bandwidth of the lnbf is wider than just 500MHz, and many receivers will tune higher than 1450, so for example, with a standard lnb you can often tune up through the 12200-12700 DBS band (although the polarity is wrong), however receivers generally don't tune below 950, so you can't tune freqs below 11700. There are several satellites over the atlantic that transmit below 11700, so the advantage of the universal lnbf is that it allows you to tune these atlantic satellites, if you are in a location where you can see sats over the atlantic. The universal lnbfs generally have 2 LOs, and can switch between them, to get the low band or the regular band. I've read some people report problems with the switching, whereby they were unable to get to some freqs because the lnbf didn't switch properly.
If you are in an area where you can't see the atlantic sats, or don't have any interest in those sats, there isn't any advantage to a universal lnbf, and in fact "simple is better" could apply.
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