There was a 144-148-13LB as well as the LBA. Reviews on both are in
the ARRL product review section available to members. The teflon coax is
a 4:1 balun I believe.
I have a smaller KLM dual driven 2m yagi. I let the computer play
with the design, focused on the bottom of the band, and switched to a
single driven element. If you try a redesign this don't forget the
element correction for elements going through the boom.
Unless you are serious about 2m weak signal work likely will be fine
as it is.
73, Jay K0GU
On 11/28/2011 1:24 PM, Steve W3AHL wrote:
> The manual is available for $9 from:
> http://www.vintagemanuals.com/manual.php?manufacturer=KLM&model=144-148-13LBA
>
> There is some info at: http://forums.qrz.com/archive/index.php/t-51333.html
>
> Steve, W3AHL
>
> From: Jim Brown<jim@audiosystemsgroup.com>
> Subject: [TowerTalk] KLM 13-El 2M Beam - Need Documentation
> To: towertalk@contesting.com
>
> 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'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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