I am in the process of erecting a wire vertical. I could go with either an
Inv-L or a T. In modeling the T design, I used a 70-ft top wire (which is my
space limitation amongst the tree-tops), and a 70-ft. vertical section with the
base 4 feet above ground with 4 elevated qtr-wave radials that slope up to 10
feet above ground. EZNEC gives me about 21 - j71. Using an L-network
calculator, I come up with a low-pass series L of 6.37 uH and a shunt C of 205
pF. Any feedback or "better-way-to-do-it" comments? With either the Inv-L
or theT, I am looking at some matching at the base. How about my MFJ949
outside at the feedpoint?
Steve KK7UV
_______________________________________________
Topband mailing list
Topband@contesting.com
http://lists.contesting.com/mailman/listinfo/topband
|