[CQ-Contest] A3S or TH3JR or....a QUAD!

[Jukka Klemola]

OK!
Please let me know the right measures for a 2 el three band 10-15-20
quad.

73,
Jukka OH6LI

> Van K7VS
...
>
>I have been using a quad since 1967.  And never looked back!  The first
one 
>was a two element quad made by Gotham (Anyone remember that company?)
And >a snowstorm took that one down the weekend of the ARRL DX cw
contest in >1968. 
>Since then, have used a Gem Quad with great sucess in the contests over
the 
>years.    Only need FR/G to be on "top of the honor roll."  Have a
three 
>element in the air now and have a four element Gem quad in the rafters
in 
>our garage.  Only thing I have every done is use coax matching xfmrs on
the 
>the three driven elements with a remote heathkit antenna swtich.  73 es
gud 
>dx.  Van, K7VS in Medford, Oregon
...
>> I helped K0XN construct a 
>> two element Quad and then we spent a lot of time tuning it. When ARRL

>> version was first published, I found to my surprise that their
computer 
>> generated dimensions were within 1% of the dimensions that we had
dervied 
>> experimentally. I'm currently using the same antenna at 55 feet and
have 
>> been very happy with it's performance. One note of caution
here....the 
>> published dimensions are for bare wire. If you use insulated wire (to

>> protect against polutants, salt, etc.) be aware that insulated wire
has a 
>> slower velocity factor than bare wire. The effect is on the order of
2%.
>> 73 Steve K0SR