Red Wave Radio

 Now, between questions and opinions, there has to be something in
this one for everyone :)

 I've just about finalized my ideas for the two wire antennas I will put
up hopefully before the end of the year (unless the rainy season comes
early).  Before I start scrounging up materials and lining up help for the
TV mast party, I thought I'd briefly describe what I want to do and
solicit your comments and opinions.  I have a specific question or two
about one of the antennas that involves a choice in placement, so
hopefully I can get a good answer or two on that.

 The first one, whose configuration is pretty much set, is a tilted
delta loop of about 350 feet of 12 AWG in roughly an equilateral
shape with the point up.  It will be fed from a lower corner with
open wire line to a air core ***balun, then into the shack  
through an SPC type of transmatch.  The apex will be about 65-70 feet high
with the base between 10 and 15 feet above the ground.  It will be
oriented broadside N/S.  Its support by the way is a 50 foot TV mast on
the roof, with non-metallic guys except on the lowest ring.  I had
excellent results with a very similar antenna about 2/3'rds this size, but
with the base even lower...about 6-8 feel in that case..so I'm hopeful
about his one.  I would enjoy any and all comments, suggestions and
discussion on this one  

 The second one has a choice to be made before I finalize its
configuration.  In any case, it will be a simple dipole, 12 AWG,
center fed with open wire line through a coaxial ***balun to the
shack and an SPC design transmatch.  It will also be oriented
broadside N/S (no real choice on either orientation).

 Option A has a length of about 100 feet and both ends at about 50
feet above the ground, i.e. essentially a level flat top.

 Option B has a length of between 125 and 130 feet, one end at the
same 50 feet, but the eastern end will be about 15' above the
ground..i.e. a sloper.  

 I'd be particularly interested in how the two options might compare on
the lower bands (80/40).  On one hand I can have the height for the whole
length, but only 100 feet long, the other has more length but a lot closer to
the ground on one end.  Comments?

  Thanks for your time.  Please feel free to email direct.

  Dennis

On Optiopn-B, have you considered dropping both ends, and keeping it
symmetrical? That would keep a major part of it at a good height, and
neither end would be as low as 15'. I realize thar trees do not grow where
you want them to ...

Tam/WB2TT
_______________
........

Quote:>  Option B has a length of between 125 and 130 feet, one end at the
> same 50 feet, but the eastern end will be about 15' above the
> ground..i.e. a sloper.

>  I'd be particularly interested in how the two options might compare on
> the lower bands (80/40).  On one hand I can have the height for the whole
> length, but only 100 feet long, the other has more length but a lot closer
to
> the ground on one end.  Comments?

>   Thanks for your time.  Please feel free to email direct.

>   Dennis

Can you explain?

        Dennis

Dennis,
   Because 40 meters will be the second harmonic of
both antennas, which usually doesn't work out so well.
The loop will probably 'do' better than the doublet
since 40 meters would almost be the third harmonic,
sort of, but I'm guessing.
                         'Doc

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