Wayne wrote: > I also have a bulkhead mount Polyphaser which I could, for the time > being, install at the repeater itself and use a jumper there that is
Others may disagree, but the Polyphaser is only "perfect" if tied to a properly planned single-point or halo/ring grounding system. It'll offer some protection just stuck on the feedline and maybe protect your investment if you have a GOOD ground available for it inside, but by mounting it inside, you're allowing the lightning IN. You want the lightning OUT. But what you really want is a lightning protection system that allows the entire system... the tower, the feedlines, the cabinets, whatever... to rise and fall at the same potential. That said, having it is better than not, I suppose. There's been so much written on the topic, and done by pros, that I won't even attempt to elaborate further. Polyphaser has some excellent information on their website. Since you said the tower is 22', you're probably not at a commercial site. If you were to pull the trick of bypassing a copper entrance panel and bringing that polyphaser inside, you'd definitely piss off the other people around you inside a commercial setup, done right. At home... all bets are off. Most people don't even have their tower grounds bonded properly to their house safety ground, etc. And when they do, they often find they've created problems for themselves at HF, since the lengths (especially from 2nd floor ham shacks) are resonant at HF, which will drive you batty... ARRL Handbook and Antenna Book both have some discussion of grounding techniques also... for that late night insomnia... but if you ever get a chance to see a really well done commerical antenna site -- go get a tour. It's impressive. (And expensive.) Nate WY0X
