For 10 years I thought I could protect my station from anything but a superstrike, but that was before I put up a 110' tower, and before the summer thunderstorms around here became more violent (Clim
Something to remember about lightning, conductive paths, induced voltages, and interconnected equipment. First, it sounds to me like you may have had one of those "super strikes". Second, you don't n
One interesting item of note, and this article is making me "think" (a bad thing) This weekend I got a tour of a USCG Cutter (The Katherine Walker WLM 552), and something I noticed when we walked pas
--Original Message-- Lots of qualifiers there: "can induce" and "as high as", but, the risk is real, although the vast majority of strikes a mile away won't do anything more than give you a burst of
--Original Message-- ACtually, it's more linear fall off than inverse square. Inverse square applies when the source is a point (or can be considered as such in the scale of the analysis.. a 30 foot
I've been using fiber for years to isolate my AR Cluster computer (always on 24/7) from the rest of the network. 100 Mbps Ethernet optical transceiver are readily available and inexpensive (try eBay)
--Original Message-- <snip> 75 feet is about 25 meters, so the inductance is around 25 microhenries. At 1 MHz (which is a nice round number for the spectral peak in a lightning strike), the impedance
I didn't carefully read the whole thing, too long. But some observations: A crank up tower is very hard to ground as there is no good connection between the tower sections so your cables are prone to
Author: Martin Ewing AA6E <aa6e@ewing.homedns.org>
Date: Fri, 30 May 2008 12:07:53 -0400
Interesting thread. There has not been too much systematic thinking about lightning / surge protection for ham radio, IMO. Lots of good ideas floating around, but too many anecdotal reports. If you g
That was an interesting story Dick. Thanks. K8RI suggested maybe induced currents from the strike, but it seems to me that you had more damage than what usually happens from that. Here is one more po
After over 30 years in the Electrical trade I'm still hold Mother Nature in a great deal of respect and awe in the speed and the Hugh amount of damage a lightning strike can do, My wife called me and