The average S/N is -0.1758 for ATF33143feb while the MGF1801 shows S/N=-0.2866 with a known NF of 0.2874 dB. The correction for the S/N scale to show NF (with reversed sign) is to add -0.0008 dB. From this comparison one would conclude that the NF of the ATF33143feb is 0.1766 dB. |