2021-05-17, 14:48:11
Marvin your plot is hard to read, looks like an encrypted message to a spy :-)
I gave the Google Earth method a try for my QTH to VE3OSR. See attached.
I couldn't find a way to copy the graph so I used the snipping tool & pasted it into a LibreOffice Draw page. Had to add my mast elev. & OSR tower manually. The app in the link I sent to Richard is designed for this purpose, so it lets you input those parameters. I think Tom said OSR ant. was at 300' but I drew a 200' line as well. Easy to see why my net attendance was iffy until the link came up.
EM ground waves do bend around the curvature of the earth a bit so the actual range is a little more than direct line-of-sight.
73
Dave, VE3WI
I gave the Google Earth method a try for my QTH to VE3OSR. See attached.
I couldn't find a way to copy the graph so I used the snipping tool & pasted it into a LibreOffice Draw page. Had to add my mast elev. & OSR tower manually. The app in the link I sent to Richard is designed for this purpose, so it lets you input those parameters. I think Tom said OSR ant. was at 300' but I drew a 200' line as well. Easy to see why my net attendance was iffy until the link came up.
EM ground waves do bend around the curvature of the earth a bit so the actual range is a little more than direct line-of-sight.
73
Dave, VE3WI