[amsat-bb] Antenna element and Boom material

Mike Hoblinski hobergenix at sbcglobal.net
Mon Aug 12 13:09:31 PDT 2013

I was looking at constructing a Log Periodic antenna and was wondering
about useing square material instead of round elements. The plans call out
1/4 round hollow tube for the elements. I ran across some aluminum extrusion
material from a company called Microrax http://www.microrax.com/ that sells
small aluminum extrusion and brackets plus hardware.

Their extrusions are 10mm square and come in legnths up to 35 inches. I was
looking at going with some larger extrusion material for the boom. All of the 
extrusion material has nice channels cut into it that could be used for element
spacing adjustment and easy mounting. My other thought was to tap the ends of
the elements and add stainless steel screws to adjust the legnths.

I am wondering about going from 1/4 inch tound elements to about 3/8 inch square
would effect the performance of this antenna. 

Mike Hoblinski


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