What if you have arrestors at the tower AND the SPG at the shack?
Chris
KF7P
On Sep 11, 2010, at 9:53 , Jim Brown wrote:
On Sat, 11 Sep 2010 10:57:06 -0400, Gene Smar wrote:
> It depends. I have my Polyphasers at the NEMA box at the tower base,
> but I also have a remote coax switch there, too.
I disagree (and agree with K1TTT) -- lightning protection devices are
protecting you radios by short the voltage on the center conductor to
the shield. They cannot do that at the tower -- voltage can be induced
on the coax between the tower and the shack, and a protector at the
tower is too far away to offer much protection at RF. The best place for
them is at the entry panel to the shack.
The SHIELDS of coax SHOULD be bonded at top and bottom of the tower.
73, Jim K9YC
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