20-40m Tuning Checklist

May 2014

20M — feeder centered  1.1:1 SWR

  • move capacitor to 20M position
  • feed centered produces 1.1:1 but not 1.0:1 in dry WX
  • insert the 1/12λ matching section to bring SWR down from 1.5 to 1.1

40M —

  • Move cap to 40M position
  • feeder up 2.75″ above the 20M (center) position
  • remove the 1/12λ matching section (5/18/14 aloha net left it in round one and few could hear me)

Past problems

  • the cap set screw must not slip or the RC won’t work
  • the 6V PowerPoles fail easily – tape them up
  • Ensure there is no short in the feeder loop F connector

 

~ by marksun on May 3, 2014.

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