Homebrew R.F. low pass filter. (Middle Wave to V.H.F. band)
Geplaatst door beheerder op 07. August 2009 21:30
This RF Low Pass Filter shows the basic circuit required to remove the harmonic frequency content of a transmitter.
By making C2 and C4 variable trimmer acurate filtering can be achieved.
All coils are 22SWG wound on 10mm Air former spaced at 2mm.