[amsat-bb] Re: homebrew Loop yagi

[Glen Zook]

There is an article on the North Texas Microwave Society website about building a 1296 MHz loop yagi.

Go to

http://ntms.org/

Then look at the list of links on the left hand side of the page.  Click on "Tech Library".  Then choose "The NTMS 1296 Loop Yagi Project - Al Ward - W5LUA (pdf) 169k".

The link just below that one has some technical measurements.

Glen, K9STH

Website:  http://k9sth.com


--- On Thu, 1/29/09, w7lrd at comcast.net <w7lrd at comcast.net> wrote:

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.