"Mohd Nazry Bin Mustapa" wrote in message
...
Anyone know how to make a simple lightning arrester (Homebrew) that really
work in case of lightning.


the most basic one is a spark gap. these have been used since the first
days of long telegraph lines. just position two sharp pointed metal pieces
a small distance apart, connect one side to the cable and the other to a
good ground. you want the distance as small as possible, but wide enough so
your normal transmission power doesn't create an arc.

NOTE: a lightning arrester WILL NOT WORK if you don't have a good ground.
IT IS NOT A REPLACEMENT FOR A GOOD GROUND SYSTEM! All a lightning arrester
does is limit the voltage difference between signal carrying wires and the
nearby ground it is connected to, you must properly connect all grounds
together to get any benefit from any kind of lightning arrester.