[amsat-bb] Question re WA5VJB "Cheap Yagiis"
cptcurt at flash.net
Fri Nov 14 10:47:43 PST 2008
Hi have liked the way the WA5VJB Kent Britain 144Mhz cheap yagi worked
so decided to build one for 435.
Couple of questions:
For the driven element "hairpin" or J, it shows 1/2" dimension for the
spacing--knowing this might be critical on 435, is that INSIDE spacing
or OUTSIDE spacing??
Also, I noticed what appears to be unusual element spacing for the last
directors in both the 435 and 432 versions. The spacing increments seem
to follow an increasing spacing trend but then the last couple are
different. ie spacing goes ...6.25, 6.5, 6.5, 7.25, 7.25, 7.0, then 7.5.
Is this a result of the computer design for easily progressive build, or
perhaps some error in the dimensions posted on-line??
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