{"id":17107,"date":"2016-01-27T20:53:40","date_gmt":"2016-01-28T00:53:40","guid":{"rendered":"http:\/\/swling.com\/blog\/?p=17107"},"modified":"2016-01-27T21:00:11","modified_gmt":"2016-01-28T01:00:11","slug":"all-india-radio-drm-dan-notes-two-simultaneous-feeds","status":"publish","type":"post","link":"https:\/\/swling.com\/blog\/2016\/01\/all-india-radio-drm-dan-notes-two-simultaneous-feeds\/","title":{"rendered":"All India Radio DRM: Dan notes two simultaneous feeds"},"content":{"rendered":"
\"All<\/a>

All India Radio (AIR) Headquarters in Dehli, India. Photo courtesy of Wikipedia.<\/p><\/div>\n

Many thanks to SWLing Post<\/em>\u00a0contributor, Dan\u00a0Srebnick, who writes:<\/p>\n

While DRM (Digital Radio Mondiale) has long been pronounced DOA (dead on arrival), All India Radio seems to be taking it pretty seriously. Here\u2019s a screenshot of not one, but two simultaneous feeds going out over the same 10 kHz wide 40 meter frequency (7,550 kHz) at 2027 UTC today. The signal on my Perseus was just a tad under S9+5db using my ham band Alpha Delta DX-CC antenna.<\/p>\n

\"image001\"<\/a>So what\u2019s the twist, aside from the 2 feeds on 1 frequency? Even at +5 over S9, the feed was only strong enough to occasionally flutter in with some decoded audio. Mostly, it was silence.<\/p>\n

[I had]\u00a0about a 98% successful decode by 2051 UTC when the signal rose to S9+10 db. I could switch between streams by clicking channel button within Dream!<\/p>\n

Dan wrote the message above yesterday, I asked him if he could record AIR \u00a0today and he kindly sent the following:<\/p>\n

AIR DRM recorded today with announcements @ 1930 UTC. Some dropouts as a
\ngreat example of the dropout\/echo effect heard on DRM when signals are quite
\nstrong enough. This decode was done at S9 signal strength.<\/p>\nhttps:\/\/archive.org\/download\/AIRDRMWithDropouts\/AIR%20DRM%20with%20Dropouts.wav<\/a><\/audio>\n

Dan actually calls the DRM dropouts, the “Max Headroom<\/a> Effect.”<\/em> \u00a0That is the best description I’ve ever heard, Dan. \u00a0Thanks for sharing your notes and recording!<\/p>\n","protected":false},"excerpt":{"rendered":"

Many thanks to SWLing Post\u00a0contributor, Dan\u00a0Srebnick, who writes: While DRM (Digital Radio Mondiale) has long been pronounced DOA (dead on arrival), All India Radio seems to be taking it pretty seriously. Here\u2019s a screenshot of not one, but two simultaneous feeds going out over the same 10 kHz wide 40 meter frequency (7,550 kHz) at […]<\/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":[1114,54,3,746,43],"tags":[52,2764,4715,980],"class_list":["post-17107","post","type-post","status-publish","format-standard","hentry","category-digital-modes","category-drm","category-news","category-recordings","category-shortwave-radio","tag-air","tag-all-india-radio-drm","tag-dan-srebnick","tag-digital-radio-mondiale"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/pn3uc-4rV","jetpack-related-posts":[{"id":7496,"url":"https:\/\/swling.com\/blog\/2013\/10\/all-india-radio-publishes-a-tender-for-800-drm-receivers\/","url_meta":{"origin":17107,"position":0},"title":"All India Radio publishes a tender for 800 DRM receivers","author":"Thomas","date":"October 4, 2013","format":false,"excerpt":"The DRM Consortium has posted an All India Radio\u00a0(AIR) tender for 800 DRM AM\/FM\/Shortwave receivers. AIR is seeking a DRM receiver with a feature set that would include: DRM decoding on both shortwave and medium wave (AM broadcast) bands 1 kHz tuning increments on DRM bands (with DRM auto lock)\u2026","rel":"","context":"In "Broadcasters"","block_context":{"text":"Broadcasters","link":"https:\/\/swling.com\/blog\/category\/broadcasters\/"},"img":{"alt_text":"drmlogo","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2009\/11\/drmlogo.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":48849,"url":"https:\/\/swling.com\/blog\/2021\/05\/starwaves-drm-softradio-app-for-android-now-released\/","url_meta":{"origin":17107,"position":1},"title":"STARWAVES DRM SoftRadio App for Android now released","author":"Thomas","date":"May 9, 2021","format":false,"excerpt":"Many thanks to SWLing Post contributor, Dan Srebnick, who shares the following press release from Starwaves: STARWAVES DRM SoftRadio App for Android now available! Good news for all SDR friends: STARWAVES DRM SoftRadio App for Android is now available for public use! Listen to DRM \u2013 Digital Radio Mondiale live\u2026","rel":"","context":"In "Digital Modes"","block_context":{"text":"Digital Modes","link":"https:\/\/swling.com\/blog\/category\/digital-modes\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/05\/adrien-K12SrkaZuCg-unsplash-scaled-e1620562300113.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/05\/adrien-K12SrkaZuCg-unsplash-scaled-e1620562300113.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/05\/adrien-K12SrkaZuCg-unsplash-scaled-e1620562300113.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/05\/adrien-K12SrkaZuCg-unsplash-scaled-e1620562300113.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":24717,"url":"https:\/\/swling.com\/blog\/2017\/03\/all-india-radio-investing-heavily-in-drm-tranmitters\/","url_meta":{"origin":17107,"position":2},"title":"All India Radio investing heavily in DRM tranmitters","author":"Thomas","date":"March 17, 2017","format":false,"excerpt":"Many thanks to SWLing Post reader, Pradip, who shares the following story from Radio and Music Biz online: AIR has acquired 37 DRM transmitters, in talks to get cheaper radio sets NEW DELHI: All India Radio (AIR) has introduced digital radio technology in the AIR Network by installing new state\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\/2009\/01\/newdelhi90zu.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":708,"url":"https:\/\/swling.com\/blog\/2010\/04\/all-india-radio-to-go-drm\/","url_meta":{"origin":17107,"position":3},"title":"India To Go DRM","author":"Thomas","date":"April 11, 2010","format":false,"excerpt":"In the broadcasting world, All India Radio has been an early adopter of DRM technology. I was pleased to find this article from the DRM Consortium via Andy Sennitt at RNW Media Network: The Digital Radio Mondiale (DRM) Consortium has welcomed the Indian government\u2018s approval of All India Radio (AIR)\u2019s\u2026","rel":"","context":"In "Broadcasters"","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\/2010\/04\/AllIndiaRadioLogo1.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":53288,"url":"https:\/\/swling.com\/blog\/2022\/07\/changes-to-ktwrs-drm-broadcast-schedule-effective-3rd-july-2022\/","url_meta":{"origin":17107,"position":4},"title":"Changes to KTWR’s DRM broadcast schedule effective 3rd July, 2022","author":"Thomas","date":"July 9, 2022","format":false,"excerpt":"Many thanks to SWLing Post contributor, Mangosman, who shares the following tip from Mike Sabin at KTWR via Alokesh Gupta's blog: Due to requests for later broadcasts, improved propagation, and the addition of a program, KTWR is changing its DRM broadcast schedule effective 3rd July, 2022. KTWR Digital Broadcasts DRM\u2026","rel":"","context":"In "DRM"","block_context":{"text":"DRM","link":"https:\/\/swling.com\/blog\/category\/drm\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/12\/DRM-Waterfall-Spectrum.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/12\/DRM-Waterfall-Spectrum.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/12\/DRM-Waterfall-Spectrum.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/12\/DRM-Waterfall-Spectrum.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":9296,"url":"https:\/\/swling.com\/blog\/2014\/04\/bbc-world-service-features-drm\/","url_meta":{"origin":17107,"position":5},"title":"BBC World Service features DRM","author":"Thomas","date":"April 15, 2014","format":false,"excerpt":"In this BBC World Service report,\u00a0Mark Whittaker explores Digital Radio Mondiale (DRM) and, especially, its potential in India. Use the embedded player or link below to listen: listen to \u2018Digital Shortwave: a radio revolution \u2019 on Audioboo (Source: Audioboo via\u00a0Tarmo Tanilsoo on Facebook) You'll note the BBC World Service fails\u2026","rel":"","context":"In "Broadcasters"","block_context":{"text":"Broadcasters","link":"https:\/\/swling.com\/blog\/category\/broadcasters\/"},"img":{"alt_text":"drmlogo","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2009\/11\/drmlogo.jpg?resize=350%2C200","width":350,"height":200},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/17107","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=17107"}],"version-history":[{"count":0,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/17107\/revisions"}],"wp:attachment":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/media?parent=17107"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/categories?post=17107"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/tags?post=17107"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}