{"id":35402,"date":"2019-01-01T11:03:24","date_gmt":"2019-01-01T15:03:24","guid":{"rendered":"https:\/\/swling.com\/blog\/?p=35402"},"modified":"2022-08-09T08:28:57","modified_gmt":"2022-08-09T12:28:57","slug":"crystals-go-to-war-a-1943-film-about-the-production-of-signal-corps-radio-crystals","status":"publish","type":"post","link":"https:\/\/swling.com\/blog\/2019\/01\/crystals-go-to-war-a-1943-film-about-the-production-of-signal-corps-radio-crystals\/","title":{"rendered":"“Crystals Go To War”: A 1943 film about the production of Signal Corps radio crystals"},"content":{"rendered":"

\"\"<\/a><\/p>\n

Many thanks to SWLing Post<\/em> contributor, Charlie (W4MEC), who shares this fascinating film which documents the production and calibration of crystals in 1943. I had no idea of the amount of labor and attention to detail this process required–an absolutely fascinating process:<\/p>\n

UPDATE (08\/09\/2022): the YouTube account associated with this film has been deleted by the owner.<\/strong><\/p>\n

Click here to view this same film now hosted by the Antique Wireless Association.<\/strong><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Many thanks to SWLing Post contributor, Charlie (W4MEC), who shares this fascinating film which documents the production and calibration of crystals in 1943. I had no idea of the amount of labor and attention to detail this process required–an absolutely fascinating process: UPDATE (08\/09\/2022): the YouTube account associated with this film has been deleted by […]<\/p>\n","protected":false},"author":15,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[545,627,3,305,288,43,4796],"tags":[6877,617,7500,4091,3529,676],"class_list":["post-35402","post","type-post","status-publish","format-standard","hentry","category-ham-radio","category-how-to","category-news","category-nostalgia","category-radio-history","category-shortwave-radio","category-vintage-radio","tag-charlie-liberto-w4mec","tag-crystal-radio","tag-crystals","tag-radio-history","tag-signal-corps","tag-wwii"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/pn3uc-9d0","jetpack-related-posts":[{"id":53647,"url":"https:\/\/swling.com\/blog\/2022\/08\/from-raw-crystal-to-crystal-oscillator-crystals-go-to-war-in-1943\/","url_meta":{"origin":35402,"position":0},"title":"From Raw Crystal to Crystal Oscillator: Crystals go to War in 1943","author":"Thomas","date":"August 9, 2022","format":false,"excerpt":"Many thanks to SWLing Post contributor, Mark (AE2EA), who shares the following AWA video about crystal production during WWII: https:\/\/youtu.be\/duZlWWwxIPQ Click here to view on YouTube. Thank you so much for sharing this, Mark. I posted the original film of this a few years ago, but it appears that the\u2026","rel":"","context":"In "News"","block_context":{"text":"News","link":"https:\/\/swling.com\/blog\/category\/news\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/01\/Crystal-Production.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/01\/Crystal-Production.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/01\/Crystal-Production.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/01\/Crystal-Production.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":48215,"url":"https:\/\/swling.com\/blog\/2021\/03\/1940-when-sears-roebuck-sold-a-wide-array-of-radio-gear\/","url_meta":{"origin":35402,"position":1},"title":"1940: When Sears Roebuck sold a wide array of radio gear","author":"Thomas","date":"March 17, 2021","format":false,"excerpt":"Many thanks to SWLing Post contributor, Charlie (W4MEC), who shares a PDF of the 1940 Sears Roebuck Co. catalog section featuring a wide array of radio gear and test equipment. This file is hosted on the Pro Audio Design forum and can be downloaded as a PDF (15.8 MB) by\u2026","rel":"","context":"In "Ham Radio"","block_context":{"text":"Ham Radio","link":"https:\/\/swling.com\/blog\/category\/ham-radio\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/03\/Sears-Roebuck-1940-Radios-Nostalgia-1.jpeg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/03\/Sears-Roebuck-1940-Radios-Nostalgia-1.jpeg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/03\/Sears-Roebuck-1940-Radios-Nostalgia-1.jpeg?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":34894,"url":"https:\/\/swling.com\/blog\/2018\/11\/contribute-equipment-to-restore-an-authentic-wwii-b-17f-heavy\/","url_meta":{"origin":35402,"position":2},"title":"Contribute equipment to restore an authentic WWII B-17F heavy","author":"Thomas","date":"November 18, 2018","format":false,"excerpt":"Many thanks to SWLing Post contributor, Charlie Liberto (W4MEC), who shares the following: Perhaps you could post somewhere a general call for anything WW II related that went into a B17F. This website: http:\/\/hangarthirteen.org\/ under the 'Parts Drive' menu, lists the many things that will be sought after for the\u2026","rel":"","context":"In "Ham Radio"","block_context":{"text":"Ham Radio","link":"https:\/\/swling.com\/blog\/category\/ham-radio\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2018\/11\/Heavens-Above.jpeg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2018\/11\/Heavens-Above.jpeg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2018\/11\/Heavens-Above.jpeg?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":35444,"url":"https:\/\/swling.com\/blog\/2019\/01\/finding-a-repair-service-for-boat-anchors-and-other-vintage-valve-tube-radio-gear\/","url_meta":{"origin":35402,"position":3},"title":"Finding a repair service for boat anchors and other vintage valve\/tube radio gear","author":"Thomas","date":"January 10, 2019","format":false,"excerpt":"Here's a common question I receive from SWLing Post readers: \"Where can I have my vintage valve\/tube radio repaired? Can you recommend a good repair service?\" The answer isn't always a simple one, especially for those living in rural or remote parts of the world. Go local The short answer\u2026","rel":"","context":"In "Articles"","block_context":{"text":"Articles","link":"https:\/\/swling.com\/blog\/category\/articles\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/01\/Warning-High-Voltage.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":9429,"url":"https:\/\/swling.com\/blog\/2014\/05\/swling-with-heavy-metal-my-signal-corps-bc-348-q\/","url_meta":{"origin":35402,"position":4},"title":"SWLing with heavy metal: my Signal Corps BC-348-Q","author":"Thomas","date":"May 1, 2014","format":false,"excerpt":"I write a great deal\u00a0about DSP portables, SDRs, and modern ham radio transceivers, but truth be known, my passion\u00a0is\u00a0for\u00a0older rigs\u2013ahem,\u00a0much older\u2013the antique \"boat anchors\" of the radio world. Tuesday\u00a0afternoon, I had a rather involved\u00a0soldering project to do on behalf of my organization, Ears To Our World. \u00a0While I worked, I\u2026","rel":"","context":"In "News"","block_context":{"text":"News","link":"https:\/\/swling.com\/blog\/category\/news\/"},"img":{"alt_text":"SignalCorps-BC-348-Q","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2014\/04\/SignalCorps-BC-348-Q-1024x706.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2014\/04\/SignalCorps-BC-348-Q-1024x706.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2014\/04\/SignalCorps-BC-348-Q-1024x706.jpg?resize=525%2C300 1.5x"},"classes":[]},{"id":31111,"url":"https:\/\/swling.com\/blog\/2018\/03\/vintage-radio-how-to-read-a-logging-scale\/","url_meta":{"origin":35402,"position":5},"title":"Vintage Radio: How to read a logging scale","author":"Thomas","date":"March 10, 2018","format":false,"excerpt":"Many thanks to SWLing Post contributor, Charlie Liberto (W4MEC) for the following guest post: Vintage receiver frequency counter\u2026sort of by Charlie Liberto (W4MEC) You probably know what a log book is, and maybe a logarithm, but do you know what a \u2018Logging Scale\u2019 was meant for? If you are a\u2026","rel":"","context":"In "Guest Posts"","block_context":{"text":"Guest Posts","link":"https:\/\/swling.com\/blog\/category\/guest-posts\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2018\/03\/Dial.jpeg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2018\/03\/Dial.jpeg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2018\/03\/Dial.jpeg?resize=525%2C300&ssl=1 1.5x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/35402","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/users\/15"}],"replies":[{"embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/comments?post=35402"}],"version-history":[{"count":0,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/35402\/revisions"}],"wp:attachment":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/media?parent=35402"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/categories?post=35402"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/tags?post=35402"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}