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Author Topic: A HISTORY OF THE QUARTZ CRYSTAL INDUSTRY IN THE USA  (Read 1398 times)

Offline ChrisSmolinski

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A HISTORY OF THE QUARTZ CRYSTAL INDUSTRY IN THE USA
« on: February 08, 2021, 1246 UTC »
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Chris Smolinski
Westminster, MD
eQSLs appreciated! csmolinski@blackcatsystems.com
netSDR / AFE822x / AirSpy HF+ / KiwiSDR / 900 ft Horz skyloop / 500 ft NE beverage / 250 ft V Beam / 58 ft T2FD / 120 ft T2FD / 400 ft south beverage / 43m, 20m, 10m  dipoles / Crossed Parallel Loop / Discone in a tree

Offline Traveling Wave

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Re: A HISTORY OF THE QUARTZ CRYSTAL INDUSTRY IN THE USA
« Reply #1 on: February 10, 2021, 0157 UTC »
Found this video entitled "Crystals Go to War" from 1943, it goes thru the steps of how crystals are manufactured for radio communication back in WWII....https://vimeo.com/292256226
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Offline ChrisSmolinski

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Re: A HISTORY OF THE QUARTZ CRYSTAL INDUSTRY IN THE USA
« Reply #2 on: February 10, 2021, 1551 UTC »
Great video, thanks for sharing!
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Chris Smolinski
Westminster, MD
eQSLs appreciated! csmolinski@blackcatsystems.com
netSDR / AFE822x / AirSpy HF+ / KiwiSDR / 900 ft Horz skyloop / 500 ft NE beverage / 250 ft V Beam / 58 ft T2FD / 120 ft T2FD / 400 ft south beverage / 43m, 20m, 10m  dipoles / Crossed Parallel Loop / Discone in a tree

Under30

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Re: A HISTORY OF THE QUARTZ CRYSTAL INDUSTRY IN THE USA
« Reply #3 on: February 14, 2021, 0456 UTC »
That's a cool video 👍
Thanks for sharing 😊
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