[50mhz] Antennas

kr7o at vhfdx.com kr7o at vhfdx.com
Thu Jun 18 19:49:11 EDT 2009


Why not just build a simple dipole or a pair at 90 degrees and feed them as 
a turnstyle.  Stack them vertically to bring the gain lower to the 
horizon.  The square loops are just folded up dipoles anyway.  From your 
location a single dipole may well cover most of the areas where you are 
likely to work stations and will be much cheaper than any commercial 
product.  A pair of dipoles spaced at ~12' will give you almost the gain of 
a small 3-el yagi and will have little visual impact depending on the 
materials you use.  Alternatively look at the Moxon's.  I have worked a lot 
of people using them and they produce a respectable signal for a small antenna.



At 05:33 PM 6/18/2009 -0500, Ken Kaplan wrote:
>Jim,
>
>I have a pair of stacked square loops spaced 9 ft apart and properly
>phased.  I also have an M2 6M5X 5 element yagi at about the same
>height.  I use a Flex 5000A with dual receivers so I can see the exact
>signal strength from both antennas simultaneously on the calibrated
>spectrum display  The purpose of this setup is so I can see signals
>coming from directions other than where the yagi is pointed.  I can tell
>you there is a very real and significant difference in signal strength -
>often 20 dB or more - between what the yagi is pointed at and what the
>loops can hear.  I have a similar setup for 2 meters and see the same
>results.   You would be much better off even with a small 3 element yagi
>on a lightweight TV rotator if at all possible.
>
>73,
>
>Ken N0GZ
>
>
>Jim Kunowsky wrote:
> > Hi guys,
> >
> > I am a relative newby to six meters starting last summer with an Arrow 
> ground plane antenna.  I know, not ideal, but it was a cheap way to get 
> on six.  I want to upgrade to something horizontal but a beam I think 
> maybe out of the question for now.  So I was wondering how many of you 
> are using loops.  I am thinking of either the Par or the M2...any comments?
> >
> > 73,
> > Jim / FM17
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73, Robert KR7O/YB2ARO, DM07ba/OI52ee  (ex.  N7STU)
kr7o at vhfdx.com

www.vhfdx.com (KR7O/YB2ARO homepages)





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