40m BPF

Finally got this right. Well kind of. I need to add some capacitance out of it to bring it onto 40m because my inductors were a lower value than i thought I wound them at. But other than that, the shape looks fine and very low insertion loss.

As designed but using the incorrect inductance values.

This is the baseline, i still have not worked out how to reference things back to 0db.


Gerber files for the PCB Boards: bpf_singles

A quick update. Im happy with that. Shape is fine, low side attenuation is good and will kill any AM broadcast.


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