{"id":49249,"date":"2021-06-13T07:00:29","date_gmt":"2021-06-13T11:00:29","guid":{"rendered":"https:\/\/swling.com\/blog\/?p=49249"},"modified":"2021-06-12T08:21:46","modified_gmt":"2021-06-12T12:21:46","slug":"pre-detection-recordings-any-in-existence-declassified-and-accessible","status":"publish","type":"post","link":"https:\/\/swling.com\/blog\/2021\/06\/pre-detection-recordings-any-in-existence-declassified-and-accessible\/","title":{"rendered":"Pre-Detection Recordings: Any in existence, declassified and accessible–?"},"content":{"rendered":"

\"\"<\/a>Many thanks to SWLing Post<\/em> contributor, Chip, who writes:<\/p>\n

I remember reading a number of years ago that the NRO\/NSA was the largest consumer of magnetic tape, utilized for pre-detection recordings of various spans of spectrum, all over the world.<\/strong><\/p>\n

I\u2019m wondering if those tapes become declassified at some point, and if they are available through FOIA requests. Were they just bulk erased, destroyed or sold at GSA auction along the way.<\/strong><\/p>\n

Do you know if anyone has ever queried into their existence, and if they have been electronically preserved to some other digital medium?<\/strong><\/p>\n

The idea that our government records huge chunks of spectrum, fuels thoughts in my mind of huge spans of non-classified spectrum from across the years. All the DX shortwave outlets captured for posterity.<\/strong><\/p>\n

Thank you for sharing this note, Chip.<\/p>\n

Of course, I’ve always been interested in adding recordings like this to the Radio Spectrum Archive.<\/a> If these recordings exist, I would love to see them added to the Internet Archive<\/a>–who stores Radio Spectrum Archive recordings– so that they could be shared and enjoyed by all.<\/p>\n

Post<\/em> readers:<\/strong> If you have any information on this, please comment!<\/p>\n","protected":false},"excerpt":{"rendered":"

Many thanks to SWLing Post contributor, Chip, who writes: I remember reading a number of years ago that the NRO\/NSA was the largest consumer of magnetic tape, utilized for pre-detection recordings of various spans of spectrum, all over the world. I\u2019m wondering if those tapes become declassified at some point, and if they are available […]<\/p>\n","protected":false},"author":15,"featured_media":0,"comment_status":"open","ping_status":"closed","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":[3,43],"tags":[6605,5713],"class_list":["post-49249","post","type-post","status-publish","format-standard","hentry","category-news","category-shortwave-radio","tag-radio-spectrum-archive","tag-spectrum-recording"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/pn3uc-cOl","jetpack-related-posts":[{"id":14543,"url":"https:\/\/swling.com\/blog\/2015\/09\/using-synchronous-detection-and-notch-filter-to-eliminate-het-noise\/","url_meta":{"origin":49249,"position":0},"title":"Using synchronous detection and notch filter to eliminate het noise","author":"Thomas","date":"September 1, 2015","format":false,"excerpt":"A few days ago, I tuned to 9,420 kHz and found a relatively strong signal from the Avlis transmitter site of the Voice of Greece. The broadcast was quite clear until a heterodyne (het) tone popped up out of nowhere. I checked the spectrum display of my Excalibur to find\u2026","rel":"","context":"In "AM"","block_context":{"text":"AM","link":"https:\/\/swling.com\/blog\/category\/am\/"},"img":{"alt_text":"WinRadioExcalibur-VOG-Notch","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2015\/09\/WinRadioExcalibur-VOG-Notch-1024x443.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2015\/09\/WinRadioExcalibur-VOG-Notch-1024x443.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2015\/09\/WinRadioExcalibur-VOG-Notch-1024x443.jpg?resize=525%2C300 1.5x"},"classes":[]},{"id":51070,"url":"https:\/\/swling.com\/blog\/2021\/12\/radio-preservation-task-force-announces-partnership-with-the-shortwave-radio-audio-archive-and-radio-spectrum-archive\/","url_meta":{"origin":49249,"position":1},"title":"Radio Preservation Task Force announces partnership with the Shortwave Radio Audio Archive and Radio Spectrum Archive","author":"Thomas","date":"December 6, 2021","format":false,"excerpt":"I'm honored to announce that the Shortwave Radio Audio Archive and the Radio Spectrum Archive are now partners of the Radio Preservation Task Force. Click here to read the official press release. To say that I'm enthused would be an understatement:\u00a0 the Radio Preservation Task Force has, as of today,\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\/2021\/12\/Tape-Reel-Original-Photo-by-Maxim-Kostenko-1.jpeg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/12\/Tape-Reel-Original-Photo-by-Maxim-Kostenko-1.jpeg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/12\/Tape-Reel-Original-Photo-by-Maxim-Kostenko-1.jpeg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/12\/Tape-Reel-Original-Photo-by-Maxim-Kostenko-1.jpeg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/12\/Tape-Reel-Original-Photo-by-Maxim-Kostenko-1.jpeg?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":10269,"url":"https:\/\/swling.com\/blog\/2014\/07\/recording-the-2014-world-cup-final\/","url_meta":{"origin":49249,"position":2},"title":"Recording the 2014 World Cup Final","author":"Thomas","date":"July 15, 2014","format":false,"excerpt":"Sunday was the FIFA World Cup Final, and not only was I looking forward to the game, but (to tell the truth) I was also looking forward to recording the game via the BBC World Service for the Shortwave Radio Audio Archive. Due to the BBC WS cuts, part of\u2026","rel":"","context":"In "Broadcasters"","block_context":{"text":"Broadcasters","link":"https:\/\/swling.com\/blog\/category\/broadcasters\/"},"img":{"alt_text":"WorldCupBall-001","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2014\/06\/WorldCupBall-001.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2014\/06\/WorldCupBall-001.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2014\/06\/WorldCupBall-001.jpg?resize=525%2C300 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2014\/06\/WorldCupBall-001.jpg?resize=700%2C400 2x"},"classes":[]},{"id":54731,"url":"https:\/\/swling.com\/blog\/2022\/11\/from-soldersmoke-watching-shortwave-broadcast-stations-on-the-tinysa-spectrum-analyser\/","url_meta":{"origin":49249,"position":3},"title":"From SolderSmoke: Watching Shortwave Broadcast Stations on the TinySA Spectrum Analyser","author":"Thomas","date":"November 22, 2022","format":false,"excerpt":"Many thanks to SWLing Post contributor and friend, Bill Meara, from the amazing SolderSmoke podcast who shares the following post that originally appeared on the SolderSmoke Daily News: Watching Shortwave Broadcast Stations on the TinySA Spectrum Analyser by Bill Meara November 18, 2022 1244 UTC. I was using a TinySA\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\/2022\/11\/Dos-Equis-Vatican-Radio-1.jpeg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":29651,"url":"https:\/\/swling.com\/blog\/2017\/12\/don-shares-spectrum-recordings-from-northern-peru\/","url_meta":{"origin":49249,"position":4},"title":"Don shares spectrum recordings from northern Peru","author":"Thomas","date":"December 14, 2017","format":false,"excerpt":"Many thanks to SWLing Post contributor, Don Moore, who writes: I've been traveling through northern Peru and I've made some SDR recordings along the way - medium wave, long wave, and some shortwave meter bands. I hope to eventually get through them all! I have also uploaded some recordings to\u2026","rel":"","context":"In "AM"","block_context":{"text":"AM","link":"https:\/\/swling.com\/blog\/category\/am\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/12\/HDSDR-Spectrum.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/12\/HDSDR-Spectrum.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/12\/HDSDR-Spectrum.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/12\/HDSDR-Spectrum.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":12232,"url":"https:\/\/swling.com\/blog\/2015\/02\/pulling-radio-santa-cruz-out-of-the-interference\/","url_meta":{"origin":49249,"position":5},"title":"Pulling Radio Santa Cruz out of the interference","author":"Thomas","date":"February 7, 2015","format":false,"excerpt":"I recorded Radio Santa Cruz early this morning around 05:00\u00a0UTC on 6,135\u00a0kHz using\u00a0the TitanSDR I currently have under review. Radio Santa Cruz\u2018s 10 kW signal from Santa Cruz, Bolivia, was very much audible here in North America, though RSC was\u00a0competing\u00a0with another station on-frequency at the time. Actually, Radio Santa Cruz\u2026","rel":"","context":"In "How To"","block_context":{"text":"How To","link":"https:\/\/swling.com\/blog\/category\/how-to\/"},"img":{"alt_text":"Bolivia","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2014\/08\/Bolivia-1024x549.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2014\/08\/Bolivia-1024x549.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2014\/08\/Bolivia-1024x549.jpg?resize=525%2C300 1.5x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/49249","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=49249"}],"version-history":[{"count":0,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/49249\/revisions"}],"wp:attachment":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/media?parent=49249"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/categories?post=49249"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/tags?post=49249"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}