[TowerTalk] More Interference Pattern

[Brian Beezley]

AB7E wrote:

"I have a drone that I have once or twice used to plot the elevation 
pattern of an antenna..."

Dave, here are a few papers on antenna measurement using a drone that 
may interest you. I only did a quick search. There are probably many more.

https://etda.libraries.psu.edu/files/final_submissions/12846  (thesis 
advisor: WA3FET)

https://www.mdpi.com/1424-8220/24/22/7395

https://hal.science/hal-03306719v1

https://repository.library.noaa.gov/view/noaa/31715/noaa_31715_DS1.pdf

https://www.dielectric.com/wp-content/uploads/2023/08/Near-Field-Drone-Measurements-of-Broadcast-Antennas.pdf

Here's a 1962 NBS paper on HF antenna siting. It addresses the Fresnel 
zone and its roughness, sloping ground, elevated sites, and horizon 
clearance.

https://www.govinfo.gov/content/pkg/GOVPUB-C13-71dde4139145270ba73cbd3f3c16f9a9/pdf/GOVPUB-C13-71dde4139145270ba73cbd3f3c16f9a9.pdf

Brian