Allen, Sorry to hear. I know exactly how you feel. My tower took a direct hit Thursday, May 8, 2019 at 8PM. My daughter who lives about 300 feet away saw the strike. I was in the shack, and felt a concussion but heard no sound. At that time I was moving the equipment around to a new position in the shack, and no antennas were connected. However, all computers were plugged in and connected to LAN through gigabit switches. All LAN switches were destroyed. Two big screen TVs were damaged. Three PC monitors were destroyed. One PC was destroyed. Three hard drives (external) were destroyed. My two Yaesu FTdx9000D transceivers were destroyed. Two Winkeyer USB's were destroyed. Two SWR/Power meters were damaged. My two Alpha 87A amplifiers were damaged. Found a repair place on FM 1960 to repair the TVs. Cost was about $300 for two TVs and one monitor. The other two monitors were replaced. Had Island Amplifier repair the Alphas. Delivered to John Stanford at 2019 Hamvention, since were were both attending. Picked up at his place near Los Angeles in December, 2019. His bill was a bit over $800. I have done extensive analysis to determine best way to mitigate this kind of damage again. Still working on solutions, and have developed a home-brew unit for each station that will disconnect 120V and 240V power plus one or more antennas, all controlled with a wireless remote. Total claim was $25K. Settlement check was received in the amount of 22.5K. Insurance adjuster gave me instructions on how to determine damage cost. He had me send one of the Yaesu units out to Yaesu in California. They communicated directly with the adjuster. Insurance paid the $300 shipping cost. Hope this helps. My homeowners policy covered the damage. It had a special clause covering lightning, with a $2500 deductible. I learned from my insurance agent almost all homeowners policies have this type of coverage. Good luck. 73, Keith NM5G On Tuesday, July 6, 2021, 05:35:17 PM CDT, Robert Polinski via BVARC <bvarc@bvarc.org> wrote: #yiv2899858339 #yiv2899858339 -- _filtered {} _filtered {} _filtered {}#yiv2899858339 #yiv2899858339 p.yiv2899858339MsoNormal, #yiv2899858339 li.yiv2899858339MsoNormal, #yiv2899858339 div.yiv2899858339MsoNormal {margin:0in;margin-bottom:.0001pt;font-size:11.0pt;font-family:sans-serif;}#yiv2899858339 a:link, #yiv2899858339 span.yiv2899858339MsoHyperlink {color:blue;text-decoration:underline;}#yiv2899858339 p.yiv2899858339ydp600b60ecyiv1298170949msonormal, #yiv2899858339 li.yiv2899858339ydp600b60ecyiv1298170949msonormal, #yiv2899858339 div.yiv2899858339ydp600b60ecyiv1298170949msonormal {margin-right:0in;margin-left:0in;font-size:11.0pt;font-family:sans-serif;}#yiv2899858339 p.yiv2899858339ydp600b60ecyiv1298170949yahoo-quoted-begin, #yiv2899858339 li.yiv2899858339ydp600b60ecyiv1298170949yahoo-quoted-begin, #yiv2899858339 div.yiv2899858339ydp600b60ecyiv1298170949yahoo-quoted-begin {margin-right:0in;margin-left:0in;font-size:11.0pt;font-family:sans-serif;}#yiv2899858339 span.yiv2899858339EmailStyle20 {font-family:sans-serif;color:windowtext;}#yiv2899858339 .yiv2899858339MsoChpDefault {font-size:10.0pt;} _filtered {}#yiv2899858339 div.yiv2899858339WordSection1 {}#yiv2899858339 The reason to bond the 2 systems together is to eliminate any potential difference between them. All grounding systems have resistance. If you pound a ground rod into the earth and attach an extension cord hot wire to it, it will not blow a 15 amp breaker! If your AC ground has say a 25ohm ground resistance, and lets say you put 3 ground rods in for your station (antenna) ground and it has a resistance of 17 ohms. When there is a large current flow (lightning) the current will take the lowest resistance path to earth. If the grounds are separate, the path it takes will be thru your rig or equipment as it contains both a AC ground (ether thru the safety ground or neutral wire) and a antenna ground. By bonding (connecting together) the two grounding systems, there is no difference between the grounds. Although current may flow it will flow to the lowest path & not try to create a path through you equipment. I can take a radio and put 1000 volts on the case but if there are no paths for the current to flow, the rig will see nothing and no damage will be done. A lightning bolt may have several million volts, but that voltage must still overcome resistance as it travels down the wiring and into the earth so the voltage & current will be many times lower, still high, but not millions of volts. Robert
From: BVARC <bvarc-boun...@bvarc.org> On Behalf Of terry leatherland via BVARC Sent: Tuesday, July 06, 2021 5:09 PM To: Robert Polinski via BVARC <bvarc@bvarc.org> Cc: terry leatherland <k5...@yahoo.com> Subject: Re: [BVARC] N5XZ Lightning Strike - Seeking guidance Robert. HI. I was going to ask this very question. I recently rerouted all of my coax and antenna runs thru a different path into my 2nd floor shack. Below the shack I put in a 8' copper ground rod. I have all 4 coax lines going thru dx engineering lightning arrestors into that ground rod. It is about 40' away on the same house side from my main house AC ground.. Should I just run a 10Gauge wire leg from that new rod to the AC rod, thereby making all of them the same ground structure? Isnt that called a ground loop? or am i reversed in this thinking. Terry Leatherland, K5PGF 281-455-8090 Sugar Land, Tx On Tuesday, July 6, 2021, 04:29:04 PM CDT, Robert Polinski via BVARC <bvarc@bvarc.org> wrote: Allen, you need to bond your ham ground with your AC ground. Robert From: BVARC <bvarc-boun...@bvarc.org> On Behalf Of Mark Brantana via BVARC Sent: Tuesday, July 06, 2021 3:47 PM To: BRAZOS VALLEY AMATEUR RADIO CLUB <bvarc@bvarc.org>; TDXS Reflector <tdxs-l...@tdxs.net>; CTDXCC <ctd...@kkn.net> Cc: Mark Brantana <n5...@yahoo.com>; Allen Brier N5XZ <n...@earthlink.net>; Allen Brier <n...@arrl.net> Subject: Re: [BVARC] N5XZ Lightning Strike - Seeking guidance I have a new 650 watt computer power supply you can have if you want it. Mark N5PRD Sent from Yahoo Mail for iPhone On Tuesday, July 6, 2021, 3:42 PM, Allen Brier N5XZ via BVARC <bvarc@bvarc.org> wrote: As many of you know, I have suffered a direct lightning strike here at my station on Monday, June 28th about 6:30 am. It was essentially catastrophic for most of my equipment inside the shack and I am still assessing the damage. I even have some damage to audio gear in another room. Many other homes in the neighborhood also suffered damage, one of them so bad that EVERY piece of electronic equipment in the house was fried. I am still waiting for a power supply to get my computer back up and running, but thanks to Orville K5VWW, we have determined that the hard drive is intact. I am seeking guidance from anyone who has suffered a similar fate. I need to know: - How did you deal with the insurance company? - How did you test equipment to determine the extent of damage? - Did you employ an electrical engineer to provide statement(s) to the insurance company to validate damage? (was is require to?) (Any EE's out there available for this?) - What was claimed? i.e. did you claim all feedlines, cables, adapters, switches, etc. in addition to radios even if there is no damage visible? Any other information which may benefit me in my claim would be appreciated. It may be a while before I am back on the air again from my QTH. Allen Brier N5XZ ________________________________________________ Brazos Valley Amateur Radio Club BVARC mailing list BVARC@bvarc.org http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org Publicly available archives are available here: https://www.mail-archive.com/bvarc@bvarc.org/ ________________________________________________ Brazos Valley Amateur Radio Club BVARC mailing list BVARC@bvarc.org http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org Publicly available archives are available here: https://www.mail-archive.com/bvarc@bvarc.org/ ________________________________________________ Brazos Valley Amateur Radio Club BVARC mailing list BVARC@bvarc.org http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org Publicly available archives are available here: https://www.mail-archive.com/bvarc@bvarc.org/
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