> On 7/20/2010 12:01 AM, Don Wilhelm wrote: >> ...so if you wish to >> protect your K3 correctly (along with all the other equipment in your >> hamshack), install some good lightning protection - single ground point >> entry point for ALL lines coming into the hamshack - NO exceptions - >> ethernet, telco, antennas, rotator, control lines, and yes even the AC >> mains entry to the hamshack should enter through a single panel
That is good advice. All you need is one path into the operating desk or close to the operating desk that is not common to the entrance panel to undo the whole mess. That bonding, including bonding back to the mains ground, is more important than anything else. > All of my hamshack equipment is on a single outlet. This has me > wondering whether a good quality connection between the entry panel SPG > and the neutral *at the outlet* (it is less than two feet from the entry > panel) would approach or achieve the objective of helping everything to > rise and fall together. Of course it would. You could use proper MOV's and bypasses on ALL of the power mains leads to the SPG at the panel or entrance point. (It really does not have to be a through-hole two-sided panel, it can be a flat sheet things mount on.) >> employing MOV or other protection devices present at that panel for each >> and every line - this is the single most important point of lightning >> protection. Bonding and wire and cable routing to avoid ground loops through equipment is by far most important. > Yet other knowledgeable people say that using MOVs in this way is apt to > *cause* damage. I don't know why anyone would say that. What kind of damage could it cause? To me, that makes no sense at all. MOV's might not help or might not be *useful* on all lines, but adding them would certainly not hurt anything. There would be no harm in peppering the panel with MOV's. It's a case where adding something might not always help, but adding it would never hurt anything. For example.... I do not have a single special lightning protection device like a polyphaser on any coaxial cable at any entrance but adding the proper device would not hurt. I rely on my DXE and RCS-8V antenna switches for differential mode coaxial line protection because they do a much better job. 73 Tom ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
