said by utahluge:Just don't tie your power and RF grounds together. Make sure they are far enough apart to not have to tie together.
Don't care what the Army said who knows how long ago.. To prevent lightning damage there can be only 1 ground. To not do so (especially if they are separated by a distance) is to invite magic smoke releases.
The RF ground absolutely needs to be bonded (bonded means tied very solidly together through an adequately sized conductor) to the power ground. The RF ground and power ground are often 2 different systems, primarily because a protection ground doesn't make a good RF ground, nor does a RF ground make a good protection ground, but they should be bonded to make a complete system.
PS note I'm a broadcast engineer in Florida, I get ample opportunities to verify lightning system protection, on towers ranging up to 1300'.