![]() And with my Proxxon mini tool I mild a small track to the edge on both sides. So from some pieces out of my junkbox (a piece of double sided pcb, 2 sma chassis and a header cut in 2) I build this simple filter holder allowing me to test and tune the filters to my requirements.įirst I drilled 5 holes for each side of the filter (the filter has 4 pins, but I need a via to connect the top and bottom layer) using a piece of perforated PCB. Owning a NanoVNA for a few months now (and hardly use it because for antenna stuff i use my RigExpert AA-600), I decided to use the NanoVNA for tuning the filters. After that they need to be tested and tuned. I had a few QRP-labs lowpass filters and bandpass filters kits laying around and because I had nothing better to do this afternoon, I fired up the soldering station and assembled them. This page is work in progress and will be updated frequently. ![]() A new version specially for the NanoVNA H4. ![]()
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