23cms filters

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Good 23cms filters are easy to build and there are plenty of designs available on the web:

Simple band pass filter for 23cms

A nice simple to construct design by GM8OTI http://www.marwynandjohn.org.uk/GM8OTI/proj23cmBPF/proj23cmBPF.html

Look through cavity filter for 23cms

Design published in CQ-TV 245

23cms 245.JPG

3 and 5 pole filters

Easy to make in a standard diecast box

http://www.w6pql.com/23cm_filters.htm


Manufacturers

The following suppliers sell built and tested units:

  • DG0VE - German supplier of reasonably priced filters for most amateur bands
  • Aerial-parts-uk - 23cm Interdigital, Filter Response measured at the 2016 Martlesham Microwave Round table as follows:-

Screen 20170408 154607.png

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