Remember, if you can manage to get a 5/8 wave vertical set up, you will
get both a high angle and a low angle lobe. Also, when modeling, using
poor radial systems seems to raise the takeoff angle of the 1/4 and 1/2
wave verticals. Many comments found on this reflector seem to back up
the idea that better radial systems give lower angles and worse give
higher. For a field day, the right vertical application might work just
fine.
You could also consider cophasing 2 or more mobile antennas with a coax
harness, and park the cars in the appropriate spots for separation.
Anyone built a 4 square of hustlers on ford pintos? I think most mobile
antennas radiate fairly high.
On Mon, 25 Apr 2005 11:05:47 -0500 "Jim Brown"
<jim@audiosystemsgroup.com> writes:
> On Mon, 25 Apr 2005 08:55:27 -0700 (PDT), Lee Buller wrote:
>
> >Anyone have any words of wisdom about this that I
> >haven't seen or read
>
> Remember that Field Day and Sweepstakes are SHORT distance contests,
>
> which calls for a fairly high angle of radiation. You want a
> radiation angle that is low enough to get coast to coast, but any
> lower is wasted power.
>
> Because verticals tend to be low angle antennas (unless they are
> very short), verticals are not a good first choice for Field Day. If
>
> it's all you can do, I would use it, but IMO, the only GOOD antenna
>
> for Field Day is a dipole as high as you can get it on 80 and 40,
> and not more than about 40 ft on the higher bands. Obviously a case
>
> can be made for more complex horizontal antennas like loops that
> have a more omni pattern.
>
> Jim Brown K9YC
>
>
> _______________________________________________
>
> See: http://www.mscomputer.com for "Self Supporting Towers",
> "Wireless Weather Stations", and lot's more. Call Toll Free,
> 1-800-333-9041 with any questions and ask for Sherman, W2FLA.
>
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>
>
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
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