½ wave dipole height

[EricExtreme]

I am erecting a ½ wave dipole for 11 meters. I am curious as to what height off the ground will offer optimum performance? I have a 140ft long dipole for 70cm - 160 meters amateur radio and the optimal height was over 100 feet up in the air between two trees on opposite sides of my property. What would the optimal height be for an 11 meter ½ wave dipole? Thanks!

 

[groundwire]

1/2 wavelength or 5/8 wavelength.

 

[Alabama Buckeye]

I've always read 1/2 λ minimally. Along with that reading comes a lowering angle on the horizon as a full λ is met. Best I recall is 15 and 10 degrees; and, the width to 1/2 power was 40 and 25d, respectively. The lowest angle on the horizon is met at just shy of 2 λ AGL at an unremarkable 8d.

 

[Crawdad]

There is loads of info on the internet available showing radiation patterns of a dipole at different heights Above Ground Level. No myths or "I've always heard", but real info. Much more helpful.

 

[BJ radionut]

As High as practical!~

 

[sp5it]

1/2 wave over the ground.

 

[Highway Man]

It will work fine enough at 6-7 feet

 

[Alabama Buckeye]

1/2 wave over the ground.
View attachment 60465

Looks to be 31d on horizon?
What would it look like a 1 full wavelength AGL?

 

[sp5it]

11m over the ground.