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 -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of ccour79992 Sent: Friday, July 10, 2009 4:13 PM To: [email protected] Subject: [Repeater-Builder] RE: Lightning Protection I agree on the Polyphaser suggestion. Dont forget the AC power protection. I suggest Transtector SL plug in series, not cheap, but they work quite well. Also, how does a Polyphaser fail? Open? Closed? And are they truly multiple strike capable? Chris KC4CMR
