Online interdigital RF cavity filter designer

By Admin March 9, 2026

Dale Hitherington’s online calculator (WA4DSY):

https://www.wa4dsy.net/cgi-bin/idbpf

By Admin

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Online interdigital RF cavity filter designer

Alex Pettit’s new RFI removal regime in H-Line 3D

Tell me what a SID (Sudden Ionospheric Disturbance) is and what range of frequencies are covered when monitoring for SIDs.

Protected: Resources for BAA GNU Radio for Radio Astronomy meeting 9/3/2026