2 responses

  1. Mario, S56A
    13/05/2013

    My KISS approach is with eliptical filters with deep notches on narrow ham bands. Coax stubs surely help as you already have filters high reactance outside of working band. Several coax stubs can be combined but it becomes messy on HF. Great work Amigo appreciated by using Firefox :-)

  2. Felipe Ceglia
    13/05/2013

    Hi Tobi!

    There is an arrangement you can make using stub-L-stub that will yeld alone more than -70db on 2nd harmonic. I am on road now, but I can give you details later. It is described in inrad book.

    73 de py1nb

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