{"id":33127,"date":"2018-07-08T06:55:42","date_gmt":"2018-07-08T10:55:42","guid":{"rendered":"https:\/\/swling.com\/blog\/?p=33127"},"modified":"2018-07-08T06:55:42","modified_gmt":"2018-07-08T10:55:42","slug":"us-army-training-film-circuit-testing-and-signal-generators-1951","status":"publish","type":"post","link":"https:\/\/swling.com\/blog\/2018\/07\/us-army-training-film-circuit-testing-and-signal-generators-1951\/","title":{"rendered":"US Army Training Film: Circuit Testing and Signal Generators (1951)"},"content":{"rendered":"<p><a href=\"https:\/\/swling.com\/blog\/wp-content\/uploads\/2018\/07\/Signal-Generator.jpeg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-33128\" src=\"https:\/\/swling.com\/blog\/wp-content\/uploads\/2018\/07\/Signal-Generator.jpeg\" alt=\"\" width=\"593\" height=\"435\" srcset=\"https:\/\/swling.com\/blog\/wp-content\/uploads\/2018\/07\/Signal-Generator.jpeg 593w, https:\/\/swling.com\/blog\/wp-content\/uploads\/2018\/07\/Signal-Generator-300x220.jpeg 300w\" sizes=\"auto, (max-width: 593px) 100vw, 593px\" \/><\/a><\/p>\n<p>Many thanks to <em>SWLing Post<\/em> contributor,\u00a0Jarno de Haan, who shares this\u00a0US Army Training Film about circuit testing via\u00a0<a href=\"https:\/\/youtu.be\/bHtsSqRg7SU\" target=\"_blank\" rel=\"noopener\">YouTube.<\/a>\u00a0If you own vintage radio gear, you should check this out:<\/p>\n<p><span class=\"embed-youtube\" style=\"text-align:center; display: block;\"><iframe loading=\"lazy\" class=\"youtube-player\" width=\"625\" height=\"352\" src=\"https:\/\/www.youtube.com\/embed\/bHtsSqRg7SU?version=3&#038;rel=1&#038;showsearch=0&#038;showinfo=1&#038;iv_load_policy=1&#038;fs=1&#038;hl=en-US&#038;autohide=2&#038;wmode=transparent\" allowfullscreen=\"true\" style=\"border:0;\" sandbox=\"allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox\"><\/iframe><\/span><\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/youtu.be\/bHtsSqRg7SU\" target=\"_blank\" rel=\"noopener\">Click here to view on YouTube.<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Many thanks to SWLing Post contributor,\u00a0Jarno de Haan, who shares this\u00a0US Army Training Film about circuit testing via\u00a0YouTube.\u00a0If you own vintage radio gear, you should check this out: Click here to view on YouTube.<\/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":[545,3,43],"tags":[7145,4105,2950,7144],"class_list":["post-33127","post","type-post","status-publish","format-standard","hentry","category-ham-radio","category-news","category-shortwave-radio","tag-circuit-testing","tag-how-to","tag-signal-corps-bc-221-al-signal-generator","tag-signal-generators"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/pn3uc-8Cj","jetpack-related-posts":[{"id":4532,"url":"https:\/\/swling.com\/blog\/2012\/09\/the-mighty-kbc-testing-transatlantic-signal-on-9-4-mhz-october-7-2012\/","url_meta":{"origin":33127,"position":0},"title":"The Mighty KBC testing transatlantic signal on 9.4 MHz, October 7, 2012","author":"Thomas","date":"September 28, 2012","format":false,"excerpt":"See if you can catch this test transmission on Sunday, October 7 (oo:00-02:00UTC) from The Mighty KBC in the Netherlands: (Source: The Mighty KBC) The Mighty KBC is testing on 9400 kHz on Sunday, October 7th, 2012 between 00.00 - 02.00 UTC with 100kW beamed to the USA, South America\u2026","rel":"","context":"In &quot;Broadcasters&quot;","block_context":{"text":"Broadcasters","link":"https:\/\/swling.com\/blog\/category\/broadcasters\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2011\/09\/KBCradio-300x212.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":22236,"url":"https:\/\/swling.com\/blog\/2016\/11\/which-is-the-best-sony-icf-2001d2010-or-icf-sw77-part-two\/","url_meta":{"origin":33127,"position":1},"title":"Which is the best? Sony ICF-2001D\/2010 or ICF-SW77? Part two","author":"Clint Gouveia","date":"November 16, 2016","format":false,"excerpt":"Hi there, after the first set of recordings were analysed, the score was 4-3 to the ICF-2001D, demonstrating how similar these two great receivers are in overall performance. There were a copule of notable differences however. The synchronous detection circuit on the ICF-2001D allows the user to effectively tune through\u2026","rel":"","context":"In &quot;AM&quot;","block_context":{"text":"AM","link":"https:\/\/swling.com\/blog\/category\/am\/"},"img":{"alt_text":"sony-test","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/11\/sony-test.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/11\/sony-test.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/11\/sony-test.jpg?resize=525%2C300 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/11\/sony-test.jpg?resize=700%2C400 2x"},"classes":[]},{"id":18134,"url":"https:\/\/swling.com\/blog\/2016\/04\/a-38-99-rtl-sdr-with-100-khz-1-7-ghz-coverage\/","url_meta":{"origin":33127,"position":2},"title":"A $38.99 RTL-SDR with 100 Khz &#8211; 1.7 GHz coverage","author":"Thomas","date":"April 7, 2016","format":false,"excerpt":"Many thanks to SWLing Post contributor, Bill, who recently shared a link to this very affordable RTL-SDR with wideband coverage. I am not at all familiar with this model, but I do like the enclosure and the fact it has both an HF and UV antenna jack. This must be\u2026","rel":"","context":"In &quot;New Products&quot;","block_context":{"text":"New Products","link":"https:\/\/swling.com\/blog\/category\/new-products\/"},"img":{"alt_text":"RTL-SDR","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/04\/RTL-SDR-e1460028209998.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/04\/RTL-SDR-e1460028209998.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/04\/RTL-SDR-e1460028209998.jpg?resize=525%2C300 1.5x"},"classes":[]},{"id":4593,"url":"https:\/\/swling.com\/blog\/2012\/10\/reminder-the-mighty-kbc-testing-transatlantic-signal-on-9-4-mhz-october-7-2012\/","url_meta":{"origin":33127,"position":3},"title":"Reminder: The Mighty KBC testing transatlantic signal on 9.4 MHz, October 7, 2012","author":"Thomas","date":"October 6, 2012","format":false,"excerpt":"See if you can catch this test transmission on Sunday, October 7 (oo:00-02:00UTC) from The Mighty KBC in the Netherlands: (Source: The Mighty KBC) The Mighty KBC is testing on 9400 kHz on Sunday, October 7th, 2012 between 00.00 - 02.00 UTC with 100kW beamed to the USA, South America\u2026","rel":"","context":"In &quot;Broadcasters&quot;","block_context":{"text":"Broadcasters","link":"https:\/\/swling.com\/blog\/category\/broadcasters\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2011\/09\/KBCradio-300x212.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":29102,"url":"https:\/\/swling.com\/blog\/2017\/11\/radio-caroline-testing-648-khz\/","url_meta":{"origin":33127,"position":4},"title":"Radio Caroline testing on 648 kHz","author":"Thomas","date":"November 12, 2017","format":false,"excerpt":"(Source: Southgate ARC via Mike Terry) Caroline 648 testing A test signal with continuous music and announcements reported today. Reception reports on Facebook from the UK, Holland, Belgium, France and Austria. Some reports from mainland Europe refer to a co-channel Romanian or Slovenian station. I think this is at a\u2026","rel":"","context":"In &quot;Broadcasters&quot;","block_context":{"text":"Broadcasters","link":"https:\/\/swling.com\/blog\/category\/broadcasters\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/11\/Radio-Dial-2-1024x576.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/11\/Radio-Dial-2-1024x576.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/11\/Radio-Dial-2-1024x576.jpg?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":52926,"url":"https:\/\/swling.com\/blog\/2022\/06\/testing-the-mfj-1020c-active-antenna-preselector\/","url_meta":{"origin":33127,"position":5},"title":"Testing the MFJ-1020C Active Antenna\/Preselector","author":"Jock Elliott","date":"June 7, 2022","format":false,"excerpt":"By Jock Elliott, KB2GOM Truth be told, I\u2019ve been curious about the MFJ 1020C for a long time. Back when I wrote for Passport to World Band Radio, over a decade ago, I wondered if the 1020C was a worthwhile device, but then I had a big wire antenna outside\u2026","rel":"","context":"In &quot;Accessories&quot;","block_context":{"text":"Accessories","link":"https:\/\/swling.com\/blog\/category\/accessories\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2022\/06\/mfj-1020c_xl.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/33127","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=33127"}],"version-history":[{"count":0,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/33127\/revisions"}],"wp:attachment":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/media?parent=33127"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/categories?post=33127"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/tags?post=33127"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}