Total posts : 45366
“It may sound silly (and maybe it is), but if a tree can indeed be used as an effective antenna, then it seems just as plausible that the same type method could ground your transmitter.”
If you read Ermi’s last post, you should see the folly in that assumption. IMO, if the tree, or any ground conductor in the antenna system (the trees will likely be several orders of magnitude in height above anything else), being in the ground, they will short-circuit before propagation takes place, canceling most if not all of the signal.
If you had enough property, say with Ponderosa Pines spread far apart, as opposed to Douglas Fir or Lodgepole Pine … which notably grow in densely crowded stands … a longwire antenna strung between the Ponderosas (illegal for Part 15 of course) could get out pretty well.
Or, you might try a large diameter cage monopole or the same with a helical as we’ve been discussing of late.