[TowerTalk] 80 Meter Delta Loop

[Jim Brown]

On 7/24/2024 1:32 PM, David Gilbert wrote:
> A vertical on a slope (or cliff) means that the dirt in the far field 
> isn't actually all there.  Air is a lot less lossy than dirt. It's the 
> takeoff angle that gets the benefit.

"Take-off angle" is a seriously flawed concept. Better to think about 
absolute field strength in the vertical plane, as I pointed out in my 
observations about interpreting models the compare antennas. :)

One of Tom's important observations that I failed to mention in the 
first post about it is that the drone data showed significant field 
strength below 0 degrees elevation in the direction of the drop-off.

73, Jim K9YC