dan1974 said:
Thankyou for your advice, i have just purchased an inverto silver tech 0.2db twin output universal lnb with high performance and low noise figure. What do you think?
By reputation - good choice.
Just as a matter of information, the quoted Noise Figures are usually that achievable over only a portion of the Band - the Noise Figure vs Frequency plot is not constant. Nor are any of the other parameters eg Gain.
The point is, you don't often get access to a full and meaningful spec., so the best policy is to buy on reputation.
And you've done that!