Hello there, i dont know f i am in the right section here as i am brand new to the forum¬ very technically minded. I AM IN Portugal & have a 1.8 mtr round dish with a 4 way LNB & i am not getting very strong snr&agc readings, i am getting between 33% to 42% SNR & 52% to 60% AGC. I have cleaned all the connections a swell as baring back the cable to make sure they are not corroded etc, Can anybody explain to me how high the SNR & AGC should be & what exactly they are please ?