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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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  Christmas Spirit Colours
Posted by: vinesweather - 2020-12-03, 14:25 - Forum: General Discussion - Replies (10)

When your signals get into the Christmas Spirit.

Big Grin



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  System Red abzugeben
Posted by: iktribegr63 - 2020-11-26, 10:08 - 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.SHAREit Appvn

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  What others are doing (universities)
Posted by: Dale.Reid - 2020-11-15, 13:05 - Forum: General Discussion - Replies (1)

http://lightning.nmt.edu/nmt_lms/

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  Another lightning article, 3D mapping at Washington, D.C., USA
Posted by: Dale.Reid - 2020-11-15, 12:56 - Forum: General Discussion - No Replies

https://www.washingtonpost.com/weather/2...pped-it-d/

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  Lightning SuperBolts news article
Posted by: Dale.Reid - 2020-11-15, 12:33 - Forum: General Discussion - No Replies

https://www.washingtonpost.com/weather/2...ts-wrapper

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Lightbulb System RED available - Nov 2020 - SOLD
Posted by: africaone - 2020-10-31, 18:31 - Forum: General Discussion - Replies (2)

Node 1445 has been operating for a number of years. I am looking for a new home for it.

Complete self assembled system with ferrite core antennas, central unit, remote amplifier and GPS receiver.

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  blue ferrite / loop antenna connection?
Posted by: MTO-Mareuil - 2020-10-20, 08:22 - Forum: Hardware, Software, Lightning Physics - Replies (1)

Hi,
can you tell me what is the best connection on the blue preamp between loop antenna or ferrite antenna? it has 3 inputs per antenna E1-E2-GND

Ferrite = E1-E2 and GND what is the correct connection?

Loop E1- E2 -?
Loop E1- GND -?
Loop E2- GND -?
(after soldering the bridge under the pcb)

Thank you for bringing me some details.

kind regards

Patrick Smile

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  Moved Posts - Unable to read them
Posted by: mendip_defender - 2020-10-14, 17:54 - Forum: General Discussion - Replies (3)

I have tried to look at a few posts that have been moved and I can't seem to view them. It seems to suggest I don't have the permissions. One for the IT team to look at.

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