2021-05-17, 17:28:38
(2021-05-17, 14:48:11)VE3WI Dave Wrote: Hi Dave and thanks for your reply.
When I did my plot I had my screen capture utility capture it to my clipboard. I though it would just paste the image into the post as one does with email. However the result obviously, was not the image but the underlying code. My apologies, but I didn't really have time to delete the post and then do it over by saving the clipped image to a proper image file then uploading that.
I will have another go at it when I get time to do it properly.
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