Nope, I missed that point. The (so-called)lightning arrestors should preferably be kept outside on the antenna-side of the fiber link, with the grounding system also outside, if at all possible.
The idea is to bleed static and surface charges to ground before they can call their biggest bestest friend, lightning, to come over to visit.
Especially in dryer climates with wind, static charges build up to a point where they can whack the equipment, lightning or not.
The fiber link will isolate the charges and the most significant power zaps from lightning, but a near strike can still pulse any nearby equipment into containers of useless components.
SO ... typical layout:
LAN--SWITCH--[fiber xceiver]===Fiber Link===[fiber xceiver]---AP:::::"Lightning Arrestor":::Antenna
If your switch has a fiber port, you can just get a single compatible fiber xceiver and take the fiber link directly to the switch.
The non-coax connection on the lightning arrestor shold go directly to a grounding system (buried rod, cold water pipe ...)on large guage copper wire (I believe 6ga copper is typical for a direct system)
It is critical that the connections be well-bonded, clean, and as direct as possible with no sharp bends.
If you are interested in reading up on lightning protection (a nice thing to know if you're installing stuff outdoors & on rooftops)), PolyPhaser (.com) has a very good book on the subject that explains the details of a good lightning protection system.
Post up any additional questions. This is one of those things that just has to be right or the whole system is at risk.
Good Luck
Scott
