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  Question on lightning.
Posted by: kalyubave92 - 2020-12-16, 16:28 - Forum: Hardware, Software, Lightning Physics - Replies (1)

Has anyone on here ever had their tent struck by lightning? If so, what happens? Does it ravage the tent? Were you okay inside and the tent poles channeled the electricity into the ground? Or are you pretty much toast if your tent gets struck with you in it?
I’m curious. Last weekend I got caught in a wicked thunderstorm that seemed to strike very close to my tent. I was on top of a barren plateau so the tent was one of the taller objects around. I minimized my space and stayed on my sleeping pad for insulation, but was still terrified until the storm passed. What is proper protocol in this situation?Note: Link removed by Admin

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  How "wide" is a bolt of lightning?
Posted by: lokaupdes34 - 2020-12-16, 16:11 - Forum: General Discussion - Replies (4)

It seems like when you see clips of lightning striking in the American Midwest, the lightning is far away and appears to be fairly large in width given the distance from the camera. And then when you see clips of a tree that is 20 feet away getting struck, the bolts of lightning appear about the same width as those that could be miles away.
So my question is, is the apparent similarity in width between distant bolts and close bolts just a coincidence or a case of selective memory on my part? And most importantly, on average, how "wide" is a bolt of lightning?

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  System Red abzugeben
Posted by: nipunamey39 - 2020-12-15, 16:14 - Forum: Non-English - Replies (1)

Hallo,

ich hätte ein komplettes System RED abzugeben:
PCB 10.3 / 12.3 komplett bestückt und funktionsfähig aufgebaut
inkl. 2 elektr. geschirmter Ferritantennen, GPS-Antenne und Netzteil.

Bei Interesse, bitte PN an mich.

Viele Grüße, Axel (DL8NDG)
10.0.0.0.1 192.168.1.254

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  Logging in problem
Posted by: paulasara84 - 2020-12-15, 16:07 - Forum: General Discussion - Replies (1)

Registered a couple of days ago.  Cannot log-in from opening page, get the error message that I am not registered.  If I go to the email I received with the URL link, I am told there is no need as I am already registered.  If I go to the 'Log In' button on that page, I am logged in.  I am confused  Any suggestions or help would be appreciated.

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  Data access for bushfire research project
Posted by: ryanstocks00 - 2020-12-15, 12:37 - Forum: General Discussion - No Replies

Hi All,

I am new to the forum but have been using the lightning maps for a while out of personal interest. I am now working on a research project as part of the bushfire initiative at the Australian National University in which we are modelling the potential use of drones to quickly scan recent lightning strikes for potential ignitions to allow for early suppression of any ignitions in bushfire prone areas. It would be amazingly helpful to be able to access the historical data that you have collected in order to provide realistic scenarios for this modelling. Is there any chance that this would be possible? It would be entirely non-commercial and we would be more than happy to reference the source Smile

Many thanks,

Ryan

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Photo Complete system Blue for sale - now sold
Posted by: dgoadby - 2020-12-15, 01:34 - Forum: General Discussion - No Replies

Sorry this system has now been sold.

I am selling my system Blue (station 2315).

The system was purchased ready-built in October 2018 and works perfectly. Decommissioned just one month ago.

The pre-amp board did suffer a fault last year but it was repaired and works 100% now.

The sales includes:

  • System Blue - was supplied ready built (ie not a kit).
  • Aluminium Blitzortung Housing.
  • Three ferrite rods. Blitzortung supplied not home made.
  • Waterproof rod mounts (aka 40mm pipe) on waterproof enclosure.
  • E-Field PCB (you supply the enclosure and rod).
  • GPS Receiver. Magnetic base, outside rated with long cable.
  • 5V Power Supply

Photos available upon request.

Best Offer secures.

If no takers then it will go on Ebay after Christmas.

I will ship to most places with shipping at cost.  I am located in the UK.

To save unnecessary list traffic email me direct: david@goadby.net

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  Magnetic Direction Finding
Posted by: ramanda12 - 2020-12-14, 20:03 - Forum: Hardware, Software, Lightning Physics - Replies (2)

Hello, i am a beginner and an electrical college student.
so, i have a project to try Magnetic Direction Finding (MDF) method to lightning location

because natural lightning occurence is hard to predict, my lecturer suggest me to model it into a spark gap from lightning impulse generator.

i have a question

can antenna for ligtning location system can also work to detect signal from a spark gap? or i have to make another antenna because the difference characteristic between lightning and spark gap? thank you! i hope you understand my english.

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Exclamation Curious phenomenon on browser: https://map.blitzortung.org/
Posted by: MTO-Mareuil - 2020-12-12, 11:18 - Forum: Website, Maps and Applications - Replies (1)

Hello everyone!

A curious phenomenon appears on my Chrome browser, each time I zoom in by pressing + or - on the site https://map.blitzortung.org/ it appears curious pixel which seems to move. Perfectly this is only displayed for a fraction of a second or it is displayed continuously (but very rare)
Is it a defect of my chrome browser or does someone else have the same problem?

may be a coded message from aliens. Big Grin Big Grin 


Patrick.



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  Piksekiirus ja väljamõeldis
Posted by: actiopabs94 - 2020-12-11, 08:24 - Forum: Non-English - Replies (1)

Olen lihtsalt segaduses pärast seda, kui kohtasin kedagi, kes üritas mulle Enelit (üks tükk) seletada.

Põhimõtteliselt oli idee, et kuna meie poolt välk pärineb tagasitulekust (mis tekitab välgu valguse), peab igaüks, kes reageerib piksenoolile, reageerima tagasituleku kiirusele (1/3 LS).

Mul on inimesi, kes ütlevad, et välgulappe ei saa enamasti tagasitulekuni mõõta, kuid miks see idee vale on?

Kas sellepärast, et tegelik välk pole sama kiirusega kui tagasitõmme?

Kui see nii on, siis miks ei saa lihtsalt öelda, et igaüks, kes reageerib välgule (mida me näeme), reageerib tagasilöögile?

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  Free to loving UK home - two system blue digital filters
Posted by: CarlOrsborn - 2020-12-09, 22:52 - Forum: General Discussion - Replies (2)

I bought six of the System Blue digital filter chips from Ebay, but used only four of them.  LTC1569CS8-7 LTC1569-7 SOP-8.

I offer the remaining two free to a good UK home.  (I've nothing against the rest of the world, but I don't fancy fighting customs forms, etc.)

They were stupidly expensive (and not in stock) from normal UK component distributors, but cheap from Hong Kong.  The four I've used seem to work.

(Back when I worked for a UK chip manufacturing company, some of our chip batches that failed production test would sometimes turn up in Chinese-made products.)

https://www.ebay.co.uk/itm/154019932554

I don't know how this forum supports messaging, but Gypsum@pobox.com should find me.

Carl

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