In article ,
chuck wrote:

ml wrote:
hi


a friend of mine might get permission to put up an antenna or two on top
of his apt building about 30 stories up mostly flat roof

the other buildings for a good distance are less than 6 stories

so i was wondering how do you protect something like that from
lightning

even if he disconnects the rig from the antenna you've still got well
over 100ft of coax with a lot of charge


there are no other antennas up there just a red flashing light ontop
of the elevator room

what is typically done?

running a heavy cable to ground downside the buidling is out

i guess it wouldn't be 'code' to grab a electrical ground out of the
elevator room, and i guess equally bad to tie into the steal girders
in there

so how do the pro's do it

The building has no lightning protection in place now?

i might have over looked the obvious, i didn't get to walk the
roof, but looking at it from the ground or building apartment to the
other building it's 1 of 2 buildings (twins) no obvious lightning rods
that i can see any place thou i can't totally see the roof

the only thing i can clearly see is 2 red lights on a short pole on the
wall of the elevator room


i'll certainly look for lightning protection if it's there great if not
i dunno

just seems to me a really really tall building out in the open, with
a ham antenna ontop can certainly get it's share of zaps


thanks all