Band Pass Filter Fever – The Tangled Web – Part 1 Band Pass Filter Fever – Untangling The Web – Part 2 Band Pass Filter Fever – The Guinea Pigs – Part 3 Band Pass Filter Fever – The Kludgy Switch Box – Part 4 Band Pass Filter Fever – Guess-timating the Filter Efficacy – Part 5 Band Pass Filter Fever – The Guess-timated Scale and Actual Guess-timated Measurements – Part 6 NEW, 20190921 Retroactive Filter Tuning with NanoVNA Photos of the filters as constructed by W4KAZ, based on NVARC and K4VX designs
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