[amsat-bb] Re: homebrew Loop yagi
w7lrd at comcast.net
Thu Jan 29 10:33:00 PST 2009
I should have mentioned this is for 1.2Ghz and the feed to the DE is UT-141
"if this were easy, everyone would be doing it"
-------------- Original message --------------
From: w7lrd at comcast.net
> I am looking for some brain power from anyone who has built loop yagi's. I am
> getting my information from The ARRL Antenna book 20th edition. The book says
> follow exactly, however. It calls for alluminum elements 0.0325 thick, I have
> copper 0.025 thick. It calls for 3/4" alluminum boom I have 3/4 copper and some
> 1/2" stainless steel channel. The feed to the driven element is UT-14, I have a
> short piece with a SMA already attached, will connecting the SMA to a SMA-N
> adapter be acceptable? I have seen the pretty pictures of Directive Systems
> antennas http://www.directivesystems.com/loopyagi.htm
> Same idea only different parts. Are these things pretty "forgiving" or are the
> components critical? Also comparing the loop to a quagi the loop widths are
> 1/4" wide and the quagi used #18 wire, why? My intent is satellites and/or
> terrestial. Thanks for the bandwidth.
> 73 Bob W7LRD
> AMSAT 28498
> "if this were easy, everyone would be doing it"
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