[TowerTalk] KLM 13-El 2M Beam - Need Documentation

Gordon Beattie w2ttt at att.net
Mon Nov 28 21:15:02 PST 2011


Ok the two element used a 2:1 balun and the four used a 1:1.  I had the six meter versions of both and that is what they did.  BTW the big four driven element is in my yard and needs a few pieces of half inch tubing to be fixed...next spring!!!!
Vy 73,
Gordon W2TTT at ATT.NET

Sent from my Motorola ATRIX™ 4G on AT&T

-----Original message-----
From: K8RI <K8RI-on-TowerTalk at tm.net>
To: towertalk at contesting.com
Sent: 2011 Nov, Tue, 29 04:00:18 GMT+00:00
Subject: Re: [TowerTalk] KLM 13-El 2M Beam - Need Documentation

On 11/28/2011 12:40 PM, Jim Brown wrote:
> One of the guys in our local ham club has given me this beam with a
> design that suggests that it was made by KLM.  There are two driven
> elements made of tubing, with a crossover between them and a short
> length of coiled teflon coax as a phasing line. The remaining elements
> are small diameter solid aluminum mounted with feed-thrus to the 22-foot
> boom, which appears to be about  1-inch to 1-1/4 inches.  The antenna is
> in excellent shape.

I have a pair of 14L KLMs but they use 4 driven elements and a single 
coaxial (concentric tubes) balun mounted to the boom. No hairpin or half 
wave coax matching.
I think I have all new insulators too. OTOH I have no idea as to where 
the manuals are, although they are around here...some where.

73

Roger (K8RI)

>
> I'm planning to use it for weak signal work on the lower 500 kHz of the
> band.  I'd like to know its specs, and what, if anything, I need to do
> to optimize it for that end of the band.
>
> 73, Jim K9YC
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