I was asking about lightning arresters based up what I have tried.  I once 
tried an in-line arrester but discovered, on my R7 multiple band vertical, 
it lowered the SWR by about 40 KHz.  I couldn't believe it so I tried 
testing it in and out and sure enough, it did change frequencies.  No, I 
can't remember the model and make of it.  I have, for several years, been 
using the Alpha Delta gas tube arc-tube coax switch arrester.  They make 
them for HF and for VHF-UHF operations but they ain't cheap.  They are 
really rugged and strong and they make one to mount on a wall, desk, or 
whatever, but they also make one with rubber feet for desk top usage.

Phil.
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