Art

Which brand of EME is this for? If for one of the new digital modes,
you don't need that much gain, as you may already know. If it's for CW,
having a ton of gain in one direction only gives you a very seldom
available and very short window.

You would be better off sticking up about 15dBd of rotatable gain and
making a horizon sched with W5UN. The 2m EME net is on 14.345 at 11AM
central saturdays and sundays. Net control is VE7BQH. Dave, W5UN, is
almost always on.

Dave also does the digi EME modes, and as a guess could probably work
you on something like 10dBd with 100W on one of those.

I know Ian is an EME're, so pipe in, Ian!

tom
K0TAR

Albert wrote:

OK, thanks Richard.

How about this.

30 wavelengths per side, average conducting ground, 12 feet above
ground.

What angle do I need for best forward gain, what will the takeoff
angle be at that angle?

If I can get the entire antenna up to 20 feet above ground, how much
better is the performance?

Is there any way for me to do modelling myself without burdening you
or someone with a modeling program? I am not aware of free software
that will model rhombics or vee's.

Thanks,

Art

ky1k at pivot dot net

PS: Some additional info. This is for EME, which does not require much
movement. Since it is so long, it won't be variable in the elevation
angle anyway. But, I hope to move one wire a bit so I can steer the
beam to the left or to the right a little (changing the angle of the
vee at the same time).