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
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