Topband: 2 phased verticals on 160
karvkari karvkari
kari.karvonen at phnet.fi
Sat Jul 3 12:50:25 PDT 2010
Hello
When using hybrid coupler or Lawallen circuit with 2 verticals, where individual elements have to be tuned if system should resonate on 1.83. I mean just on 1,83 or a bit up or down.
73 Kari OH5LF
PS Now one elements is ready with "top"loading coil at 23 m, total higth is 28,7 m and it resonates 1,805, bandwidth is 60 kHz < swr2
On resonance R=43 ohm, X=0. It seems that I have to shorten a bit the coil.
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