And you should always have an air terminal that is properly grounded. From: Chuck McCown Sent: Wednesday, May 22, 2019 8:08 PM To: AnimalFarm Microwave Users Group Subject: Re: [AFMUG] Fw: Active Lightning Suppressor - Snake Oil, or Science?
There are lots of air terminals of various designs. Some are designed to be a leak of ions. Some just a good target. The larger hemispherical ones are designed to safely shunt away the strikes. But the claims are snake oil. Nothing can guarantee protection. There is nothing magic about this device. It is hype. From: Matt Hoppes Sent: Wednesday, May 22, 2019 7:16 PM To: AnimalFarm Microwave Users Group Subject: Re: [AFMUG] Fw: Active Lightning Suppressor - Snake Oil, or Science? So if this is all snake oil - why do some commercial towers have some variation of this at the top? That’s what I’m trying to understand. An engineer for clear channel told me he’s seen a corona develop around one of his towers that had a similar item on it when storms are coming through the area. On May 22, 2019, at 2:56 PM, Bill Prince <[email protected]> wrote: My SO is unusually wary of lightning and lightning strikes. If there is the slightest hint of lightning or thunder, she reverts to the air gap method of lightning protection. If there are no wires connected to a piece of electronics, then it is most safe. Doesn't help a lot in our business, but that is what she does. bp <part15sbs{at}gmail{dot}com> On 5/22/2019 11:51 AM, Matt Hoppes wrote: Are you suggesting that if you power off the equipment during a lightning strike it won’t take damage? Why would that be? On May 22, 2019, at 2:42 PM, dave <[email protected]> wrote: I have been working with this AS3935 franklin lightning sensor for about 6 months now and learned so much more about lighting and its projected energies and possible frequencies its amazing how this little sensor can detect distance and the amount of energy BEFORE it strikes. So,armed with this ability I am solely working on a design along with IR sensing to help mitigate damage to a site during a storm. I am still working on the timing to be able to shut down power to the gear outside for a time period at which if lightning is still present remain off till storm passes. End of Run sites are the worst but knock on wood after a year or 2 of planning and cleaning up the existing grounds everything seems well. <Vcard.jpg> On 5/22/19 9:23 AM, [email protected] wrote: This is from the executive director of the lightning protection institute. -----Original Message----- From: Bud VanSickle Sent: Wednesday, May 22, 2019 7:41 AM To: 'Chuck McCown' Subject: RE: [AFMUG] Active Lightning Suppressor - Snake Oil, or Science? Snake oil for sure. You can't stop lightning strikes because of the volume of energy and short time period. If you put one of these devices on a fully grounded metallic tower, it would most likely take a strike to ground. Of course, if you ground your metallic tower properly, it is like a giant lightning rod, so you are out the money for this "topper". By the way, on tall towers, lightning doesn't necessarily strike the top anyway - it is almost never straight vertical and may be at a 45 degree angle to the side. But let me ask you this - if all the pine needles in a forest can release ions (which they can and do) or all the blades of grass on the prairie, why does lightning still strike there? Bud VanSickle -----Original Message----- From: Chuck McCown [mailto:[email protected]] Sent: Wednesday, May 22, 2019 7:51 AM To: [email protected] Subject: Fw: [AFMUG] Active Lightning Suppressor - Snake Oil, or Science? I think snake oil. You? -- AF mailing list [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com -------------------------------------------------------------------------------- -- AF mailing list [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com
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