Harry, You don't see Polyphaser arrestors used much in commercial radio or cellular phone systems, because the gas tubes are soldered in place and not easily replaceable. I prefer to use Huber+Suhner devices, not only because the gas tubes are easily replaceable, but also because the devices are watertight and machined from stainless steel. Go here for info: <www.hubersuhner.com/products/hs-p-rf/hs-rf-lightning-protectors.htm> These are available through commercial radio supply houses like Tessco, Talley, and Hutton. They are not cheap!
73, Eric Lemmon WB6FLY -----Original Message----- From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Radioman Sent: Friday, April 04, 2008 5:49 AM To: [email protected] Subject: Re: [Repeater-Builder] Static on grounded feed line system. I replace the Polyphasers at the sites I'm responsible for every two years, or sooner if a direct strike is suspected. Just because they pass RF OK doesn't mean they're still doing the job efficiently. I believe it is cheap insurance even it means replacing a half dozen or more at one site. I have recently heard that there is a new series on the market which may not require replacing except after a direct strike. I need to do more research on those. Maybe someone here has info on those? Harry, W0OZL
