[SMCARA] Antenna Setup

[Daniel Metcalf]

Rene,

That is an interesting concept that the current installation would aid
in the performance of the sloper. I don't have the modeling software but
that would be interesting to look at.

I had not considered ladder line as the antenna has an SO-239 connector
on it and I don't have any. I would need to mod the antenna to remove
the SO-239 connector and install a terminal block type connector(s) to
connect in the ladder line.

Thanks,
Dan

On Tue, 2014-11-25 at 08:54 -0500, Rene Ramirez wrote:
> Dan, I dont think the radials will hurt your proposed setup.  Maybe
> even help a bit.  You may wish to do a model of it or have someone
> with a full version of NEC run it up for you and see to be sure.  as
> for the lengthy run of coax, have you considered ladder line?  Come
> out of the house into a 1:1 or 4:1 balun then transition to ladder
> line for the run to the antenna.
> 
> 
> On Tue, Nov 25, 2014 at 8:37 AM, Daniel Metcalf <kb3uun at gmail.com>
> wrote:
>         Good Morning All,
>         
>         Just wanted to get some thoughts on a personal antenna
>         installation that
>         I have been considering. Please let me know what you think.
>         
>         Earlier this year I purchased a 160 sloper from Jim (KJ4WAS)
>         but have
>         not installed it yet for a couple reasons. First, I needed to
>         get
>         everything together to do the install and Secondly, I needed
>         to wait for
>         the leaves clear off of the tree that seems to be the best
>         candidate for
>         the installation. Lastly, having two back surgeries in a
>         single year
>         have limited my ability to get it done.
>         
>         A couple things have been ringing in my head as possible
>         issues so when
>         my launcher failed (line broke and I lost the weight on
>         launch) last
>         night I was not too heart broken.
>         
>         Possible Issues:
>         
>         1) Between my house and the tree in which I would like to do
>         the install
>         is my vertical antenna and radial field. I have been
>         considering the
>         effects that could be caused by running the new feed-line
>         either over or
>         under the existing radial field.
>         
>         2) The tree in which I would like to do the install is ~60ft
>         tall and
>         greater than 100ft from the house so I am seeing that I am
>         going to need
>         ~200ft of coax (which I already have) the thing that I have
>         been
>         considering is if I should leave the feed-line as one piece or
>         put in an
>         in-line adapter at the base of the tree.
>         
>         My current thinking is that Issue #1 is going to be the bigger
>         issue. So
>         much so that I might need to consider a different tree or
>         would be
>         inclined to move the vertical antenna to another part of the
>         back yard.
>         Which for anyone who has installed a vertical would know how
>         much of a
>         pain that would be especially with buried radials, coax and an
>         8ft
>         galvanized pipe driven in the ground as the base.
>         
>         For Issue #2 I am thinking of just leaving the coax as a
>         single piece to
>         avoid any possibility of water getting into the connectors.
>         The losses
>         for the coax at 200ft is only ~0.66 db on 40m to ~1.76db at 6m
>         based on
>         JefaTech's Website and based on needing the full 200ft of
>         LL400 so the
>         distance is not that big of an issue.
>         
>         Any thoughts?
>         
>         
>         Thanks,
>         Dan Metcalf -- KB3UUN
>         
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