[TowerTalk] FD Antenna Discussison - Just for Fun

[j4976@juno.com]

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 at 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
> 
> 
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