• You can now help support WorldwideDX when you shop on Amazon at no additional cost to you! Simply follow this Shop on Amazon link first and a portion of any purchase is sent to WorldwideDX to help with site costs.
  • The Feb 2025 Radioddity Giveaway Results are In! Click Here to see who won!

Reply to thread

Try a 7th order filter designed for 30 MHz, C-input Lowpass, Chebyshev style


Then you can add the open air inductor Q from the calc. I posted earlier.