Recent content by jms

  1. J

    5-pole Comb filter (cavity filter)

    That is a big filter :) was difficult to tune it? My only experience was tuning a 3 pole filter using a noise source and the RTL-SDR dongle, easy task.
  2. J

    Interdigital filter - "manufactured" on a desk

    Hello @Janos Konya, I've also build my interdigital filter, instead of using cooper plate I've used double sided clad pcb (not the easiest material to cut).