[Antennas] quagi vs yagi at vhf

[KD5SFA]

Look at cebiks site...he has an article on
quagis vs. yagi's at upper vhf/uhf.
I conversed with him a little on doing a little
bit more with a 6m quagi but his time is directed 
toward other projects right now. 

Most of his work deals with modeling antenna's but the
theory is enlightening.

73,
Jon
KD5SFA

-----Original Message-----
>From: G B <microsys at alltel.net>
>Sent: Nov 29, 2006 4:12 PM
>To: Antennas <antennas at mailman.qth.net>
>Subject: [Antennas] quagi vs yagi at vhf
>
>Hello,
>
>I have been searching the internet for a study on long boom vhf quagis when
>compared
>to long boom yagis.  I could not find anything.
>
>One of the EU guys who is famous for vhf yagis told me he did not think
>loops worked
>very well.  That is contrary to my experience, but, mainly, I find quagis
>easy to
>construct and they are inexpensive.  I have compared the 8 element quagi
>here to two
>different colinear verticals which claim to have 6dbd and 8dbd respectively,
>which are
>located well above the quagi.  The quagi is at least one, and many times two
>S units
>better.
>
>Anyway, I am considering building a twenty foot boom yagi using a T match
>and insulated
>elements for sideband.
>
>I would sure like to see hard evidence on a test range.
>
>As a side query, I know I can find those stainless keepers for the 3/16"
>elements on a couple
>websites, but:  Where do they get them from?
>
>As an example, the 'insulators' they sell for the elements go for $0.20 to
>$0.35 each.  They are
>just shoulder washers, and I found some for $0.01 each.  So, I figured these
>keepers have an
>official industry name, but cannot find one.  I am expecting that several of
>our local club
>members are going to build some of these antennas, and we will need some
>quantity.
>
>Thanks for listening...
>73
>
>Glen K4KV
>
>
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