Mr. Kelsey, I was unable to open or read your attachment. I too am intreested in the subject of proper grounding and lightning protection. Would you please repost that link or the document in some other manner? Thank you and I appreciate many of the contributions you have made to this hobby and radio in general over the years.
Rich N9EMS --- In [email protected], "Chuck Kelsey" <wb2...@...> wrote: > > Here's some info that might help regarding single-point grounding, attached. > > > ----- Original Message ----- > From: "Eric Lemmon" <wb6...@...> > To: <[email protected]> > Sent: Friday, July 10, 2009 8:01 PM > Subject: RE: [Repeater-Builder] RE: Lightning Protection > > > > Although Polyphaser protectors have a large and loyal following, they are > > seldom used in high-end commercial two-way and cellular sites, where the > > preference is for Huber+Suhner devices. H+S protectors are very > > expensive- > > perhaps four or five times the cost of a Polyphaser- but they are machined > > out of stainless steel, are waterproof, and have easily-replaceable gas > > tube > > elements that are available in a wide range of ratings. When you have a > > revenue-producing station that is costly to build, you don't skimp on > > lightning protection. More info about H+S protectors is here: > > > > <www.hubersuhner.com/ie70/products/hs-p-rf/hs-rf-lightning-protectors.htm> > > or > > <http://tinyurl.com/lnos4d> > > > > However, since the majority of non-revenue repeater owners are satisfied > > with Polyphasers, it should be pointed out that there are many models of > > protectors in the Polyphaser catalog. The purchaser should take care to > > select the particular model that allows the least amount of energy > > let-through for a given operating frequency and power level. The > > protectors > > are designed for a specific connection arrangement, and the antenna and > > equipment sides should not be reversed. The Polyphaser gas tube elements > > are soldered in place, and are not easily replaceable. > > > > Regardless of the brand of lightning protector used, it is very important > > that the protector body have an effective connection to ground over as > > low-impedance path as possible. Chris' comment about AC power line > > protection is a good one. Any phone or control lines entering the station > > should also be protected with gas tube arrestors. > > > > 73, Eric Lemmon WB6FLY > > > > >
