I have been trying to use my Nano VNA -H4 and PH2LB fixture for the low pass filter with NanoVNASaver software.Making my first QRP-Labs 30 meter low pass filter I get an insertion loss of -2.31 down to -2.21, with the nanoVNA.Not sure how to set up using the NanoVNASaver software.
L1 and L3 I get 19 turns I get (1.26uH), but should be (1.09uH), Should I have taken one wind off?
I did not check L2 because I did not have any meter to check, but now I do.
Is there any good Youtube video to learn?
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Larry Carbaugh - N7LUF
Larry N7LUF