[Antennas] Need help ID'ing 2M beam

Tue Aug 14 20:37:05 EDT 2007

Thanks to Joe and David for their speedie replies!
I will now call my antenna "KLM 13LB"
Joe, or any one else, do you know the differnce between the LB and
the LBA? Or is there no real differnce
Thanks again
John
N7JL
----- Original Message ----- 
From: "Joe Giacobello" <k2xx at swva.net>
To: "John Luthy" <jluthy1 at verizon.net>
Cc: <Antennas at mailman.qth.net>
Sent: Monday, August 13, 2007 5:49 AM
Subject: Re: [Antennas] Need help ID'ing 2M beam
> That is a KLM-13LB. You can look up the review on it in QST's
product
> review archives. I believe it was reviewed in 1980. The dual
driven
> elements allow the antenna to cover the entire 2M band. The coil of
> coax is a 1/2-wave 4:1 balun.
>> I just resurrected one these, but I changed the driven element to a
> regular dipole since I am only interested in the lower end of the 2M
> band. The model predicted 15 dBi gain in free space.
>> 73, Joe
> K2XX
>> John Luthy wrote:
> > Hi folks, I have a 2M beam that I can't ID, I will describe the
best
> > I can .
> >
> > The boom is about 22 feet long
> > It has 13 elements including 2 driven elements and one reflector
> > All elements are insulated from the boom
> >
> > It does not appear to have any means to adj. swr, however it does
> > show very good swr across most of the 2M band
> >
> > It is feed directly from the coax with no SO239, and it has a coil
of
> > matching coax connected across the feedpoint, The 2 driven
elements
> > are arranged like a log periodic.
> >
> > I hope I have described it in a way that some one might reconize
it.
> >
> > If anyone can offer some info on this antenna I would be very
happy,
> > I'm kinda at a loss when people ask what antenna I'm using.
> >
> >
> >
> > John
> >
> > N7JL
> >
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> >
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