[TowerTalk] Mounting Polyphaser to SPG

Steve Norris w5ki at aol.com
Sat Jun 13 07:52:13 PDT 2009


Appreciate all these continued comments and opinions.  I am reading all with much greater interest than last month.  I took a massive lightning hit here in early May and I don't even have a tower up.  On the side of mountain (hill) though and have a 18-inch diameter oak with the top half blown away to remember it by.  Suffice it to say the low 160m dipole near that tree, and the first 100 feet of coax connecting it to the antenna switch were essentially vaporized (or blown to the next county.)  Past that point, not so pretty either.  Lost just about all electronics in the house.
All the ideas and discussion are priceless, whether good, bad, or "agree-to-disagree" points.

As I build back the station, I intend to bring antennas and control lines to a SPG plate 15 feet from the house, with the surge protection units (polyphasers).  This will be the disconnect point for all coax and control lines during storms.  Over on the house side of this 15 foot separation, the station ground system and electrical ground will be tied together.  At the corner of the house closest to the antenna SPG, I plan to extend/retract coaxes and control lines from the house to that antenna SPG.  So my QUESTION:  Should the ground wire connecting the station/house system to the antenna SPG also be disconnected during storms (like the coax and other lines)? 

While researching, found this goverment PDF.  While not directed at RF (rather power circuits), it has a lot of info on copper/aluminum/etc.,  issues of bonding dissimilar metals together, and touches on some points your guys are making.  Found it while looking up info on Pentrox.  http://www.usbr.gov/power/data/fist/fist3_3/vol3-3.pdf

Steve, W5KI


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