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21-Nov-2015, 2:53 PM	#12
rabbit73 Retired A/V Tech Join Date: Aug 2012 Location: S.E. VA Posts: 2,753	If you want to learn more about Noise Margin and preamps, here is a good tutorial by Chuck AA6G: Signal Strength, Signal-to-Noise Ratio and Other Related Issues in DTV http://www.aa6g.org/DTV/Noise/noise.html This is a Noise Margin Diagram that I did to help me understand the concept: __________________ If you can not measure it, you can not improve it. Lord Kelvin, 1883 http://www.megalithia.com/elect/aeri...ttpoorman.html Last edited by rabbit73; 21-Nov-2015 at 2:58 PM.