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    alf marshall

    Hello ,i am a new starter to the forum&after some advice but i will admit a lot of this technical jargon baffles me! I want to know what the SNR & AGC percentages should be on my linuxsat box please.I am streaming through my broadband connection from a 1.8 mtr dish&i can sometimes lagging. I have been tld various permutations on what the stats should be on SNR & AGC. I have been told that the lower the % the better &also been tld the higher the % the better. Also could you explain exactkl what the SNR & AGC are ? I presume 1 is the signal strength ?



    Hi Alf, to learn more than I know, suggest you Google “Carrier to Noise Ratio” (CNR) instead of signal-to-noise-ratio (SNR). CNR expresses the QUALITY of a digitally modulated signal and the higher it is, the better. It is NOT the signal strength – good signal strength is needed but can even be too high so as to create difficulties in some receivers, requiring attenuation of the signal.

    Also Google “Automatic Gain Control” (AGC). This is a circuit in a receiver which automatically adjusts the input-to-output gain to a suitable value, enabling the circuit to work satisfactorily with a greater range of input signal levels. I admit to knowing nothing about it but can only guess that any value indicated on the receiver is good, just indicating that the receiver is doing it’s job. I could be wrong, so hope the cavalry will now arrive 🙂 .

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