Total posts : 45366
slight recap of where i was at: i had left one radial extra long to drop over the side of my house so i could attach it to my grounding rod. with it attached to the grounding rod i could not get past 3.5V and with it disconnected but still draped over the wall i was able to get about 11.5V.
today i cut the long radial down to the same length as the others (8ft) so that it is on my roof. immediately my voltage jumped up to 14V.
why is that? and what exactly does the voltage in this situation indicate? is it the amount of power being coupled to the antenna? and if so is higher always better?
edit: i had adjusted the radials and checked the voltage at about 2:30pm today. i just checked the voltage again (9:30pm) and its back down to 10.5V. is it possible for the antenna tuning to drift throughout the day or is it more likely i was somehow making a faulty reading earlier today?