in another thread the hot topic was what TX performs better than the other but the topic of grounding kept coming up. what's legal? what's not? the opinions where everywhere, some of which didnt make any sense.
so here's what i found... the fcc says we must not exceed 3m total length of antenna and ground connection. https://www.law.cornell.edu/cfr/text/47/15.219
so with that in mind we all know of at least one manufacturer using the lightning protection ground loophole yet others are afraid to use it? why?
i did a little research and radial lightning protection systems are industry (and goverment) accepted as can be seen by the following citations. the second being NOAA docs on protecting buildings from lightning.
the logic seems to be a capacitively coupled radial grounding system is more efficient than a ground rod at dispersing a strike. they also cite that its better to use thin wide copper ribbon than thick standard wire due to surface area. there is also mention of lightning protection radials in the NFPA code book.
so there's no reason i cant put my TX in a box at the top of a mast, ground that mast for lightning protection and connect my equipment ground lead to my lightning protection "system". being thourough in my fear of lightning i employ both rods and radials as does NOAA.
yep, its a fine line as we all know whats incidently happening. it is one that you can explain and show citations of it being a commonly accepted form of lightning protection until someone comes up with wireless lightning protection. it's no different really than putting up your TX on the roof of a building and making use the ground lug on the power cord.