I looked it up, and apparently utility companies already use the lines for comms, so you would be stomping on those potentially (depending on frequency).
As for radiating... Possibly... But the tuning seems ridiculously hard/out of your control.
The conductors are huge, and I can't imagine getting a stable RF standing wave across grid scale infra like that.
I'm sure it's possible... Those lines are actually too long and changing electrical length for most useful RF.
I looked it up, and apparently utility companies already use the lines for comms, so you would be stomping on those potentially (depending on frequency).
As for radiating... Possibly... But the tuning seems ridiculously hard/out of your control.
The conductors are huge, and I can't imagine getting a stable RF standing wave across grid scale infra like that.
I'm sure it's possible... Those lines are actually too long and changing electrical length for most useful RF.
I'm going to have to dig a bit deeper though.