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[TowerTalk] Duoband Models

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Subject: [TowerTalk] Duoband Models
From: (David & Barbara Leeson)
Date: Tue, 03 Jun 1997 17:24:37 -0500 (EST)
Those of you who are waiting for me to post my AO models for interlaced
duobander ideas, please hang on another week.  I took my copies of YO
and AO to show my class at Stanford, and they won't let me have them
back until they finish their projects this week!  They are also enjoying
EZNEC and have found a beta version of a NEC-4 software they like.

Meanwhile, I'm looking at tee and gamma matches, as my experience is
the same as W3LPL, the design equations don't seem to work.  I've 
started from basics and have worked my way from the folded dipole into
the tee match on my way to the gamma match.  But I think I'm seeing
that the equations for the gamma are wrong in most references, although
I can't say until I'm all done checking what I've done.  Anyone else
thinking about tee and gamma issues?  One thing for sure, the equivalent
radius of the driven element at the matching section should be 
considered in the picture.  More to come when summer's here.

Cheers de Dave, W6NL (ex-QHS)

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