Home-made Cavity to Jim, WB5WPA's design

• Link to 6 metre Duplexer Page
  http://www.dallas.net/~jvpoll/dup6m/dup6m.html
  
  
• Design adapted to 70 cms dimensions, using W103
  as inner 'stub' and LDF 7-50 as duplexer

• Top View of duplexer, showing trimming capacitors
  to reduce insertion loss
  

• Spectrum Analyser recording of cavity rejection at
  TX frequency, and insertion loss at RX frequency