[SOC] Antenna feedline
Neal Enault
wire2k at prodigy.net
Sat May 13 21:18:10 EDT 2006
The difference in loss between the two is negligible unless you have a
very long run. If you go coax, put a balun at the feedpoint of the
dipole. Of course, twin-lead requires a balun at the tuner. Also, you
might consider configuring it as an inverted vee for less
directionality if that is important and if you can't get the height
required for a proper dipole.
Neal WA6OCP
--- Tom McCulloch <thom2 at att.net> wrote:
> Hi all,
>
> I'm thinking about putting up a 40 meter dipole between a couple of
> trees
> and would like to know the current thinking on whether to use coax
> (RG-8, I
> guess) or 450 ohm 'window' line to feed it.
>
> I'm using a barefoot Elecraft K2 with an auto tuner. This will be my
> only
> antenna (at least for now) and I operate on 40 meters about 75
> percent of
> the time (CW). The rest of the time I'm on 20 meters psk31 as well
> as cw on
> 15 and ten meters, when they're open. So for those times that I'm
> not on
> forty I'll use the tuner.
>
> I've read that the 'window' line is less lossy and a qrp levels I
> guess
> that's important.
>
> Thanks in advance for any comments you may provide.
>
> Tom
> WB2QDG
>
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