These LNAs are designed to pass 1420dB +/- 30MHz, and the product sheet states they produce 40dB amplification – this analysis with a NanoVNA supports that – S21 Logmag = 0.15dB + 40dB attenuation in the circuit (the gold device in series with LNA is a variable RF attenuator set to 40dB) = 40.15dB, and a reasonably flat top to the curve in the area of 1420MHz as well.

…..so this Nooelec is good…..now to test the other ones I have!

Andy

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