{"id":48403,"date":"2021-04-04T07:00:26","date_gmt":"2021-04-04T11:00:26","guid":{"rendered":"https:\/\/swling.com\/blog\/?p=48403"},"modified":"2021-04-03T09:11:16","modified_gmt":"2021-04-03T13:11:16","slug":"am-radio-history-80th-anniversary-of-the-havana-treaty","status":"publish","type":"post","link":"https:\/\/swling.com\/blog\/2021\/04\/am-radio-history-80th-anniversary-of-the-havana-treaty\/","title":{"rendered":"AM Radio History: 80th Anniversary of the \u201cHavana Treaty,\u201d"},"content":{"rendered":"

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

Many thanks to SWLing Post<\/em> contributor, Bob Colegrove, who writes:<\/p>\n

Hi Thomas,<\/p>\n

I came across this article on Wikipedia. It is a few days late, but thought it might be of interest to others. The link is<\/p>\n

https:\/\/en.wikipedia.org\/wiki\/North_American_Regional_Broadcasting_Agreement<\/a>.<\/p>\n

Briefly, this past Monday, was the 80th anniversary of the implementation of the \u201cHavana Treaty,\u201d which was actually signed on December 13, 1937, and finally implemented 80 years ago on March 29, 1941. It provided for reorganization of the \u201cAM\u201d medium wave band into frequency allocations for clear channel, regional and local stations.<\/p>\n

AM radio was the Internet of its day. The invention of the telegraph notwithstanding, radio provided widespread, instant communication, albeit one way, to a vast population reaching hundreds of miles from the transmission source. It extended to the most rural parts of the country adding “A battery” and “B battery” to the lexicon.<\/p>\n

The initial licensing process had been done with very little planning and forethought using 96 channels between 550 and 1500 kHz. The reorganization was the culmination of the need for some order to reduce mutual station interference and provide more reliable service to listeners. It involved frequency changes for about 1000 stations in several countries. March 29, 1941 was informally known as \u201cmoving day.\u201d<\/p><\/blockquote>\n

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

The Wikipedia article details the changes made at that time and goes on to describe subsequent expansions of the AM broadcast band.<\/p><\/blockquote>\n

Fascinating! Thank you for sharing this bit of radio history with us, Bob!<\/p>\n","protected":false},"excerpt":{"rendered":"

Many thanks to SWLing Post contributor, Bob Colegrove, who writes: Hi Thomas, I came across this article on Wikipedia. It is a few days late, but thought it might be of interest to others. The link is https:\/\/en.wikipedia.org\/wiki\/North_American_Regional_Broadcasting_Agreement. Briefly, this past Monday, was the 80th anniversary of the implementation of the \u201cHavana Treaty,\u201d which was […]<\/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":[3,305,288],"tags":[625,7988,3822,9230,4099,4091],"class_list":["post-48403","post","type-post","status-publish","format-standard","hentry","category-news","category-nostalgia","category-radio-history","tag-am-radio","tag-bob-colegrove","tag-clear-channel","tag-havana-treaty","tag-mediumwave","tag-radio-history"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/pn3uc-cAH","jetpack-related-posts":[{"id":18645,"url":"https:\/\/swling.com\/blog\/2016\/05\/more-on-the-55th-anniversary-of-radio-havana-cuba\/","url_meta":{"origin":48403,"position":0},"title":"More on the 55th anniversary of Radio Havana Cuba","author":"Thomas","date":"May 2, 2016","format":false,"excerpt":"Many thanks to SWLing Post contributor,\u00a0David Iurescia (LW4DAF), for sharing the following feedback yesterday: Today, the 1st of May, is the 55th anniversary of Radio Havana Cuba. Here is\u00a0the link about this on their website: http:\/\/www.radiohc.cu\/en\/especiales\/comentarios\/91190-radio-havana-cuba-55-years-broadcasting-the-truth-to-the-world I haven't heard if RHC has any special programs or contests going on this\u2026","rel":"","context":"In "Broadcasters"","block_context":{"text":"Broadcasters","link":"https:\/\/swling.com\/blog\/category\/broadcasters\/"},"img":{"alt_text":"Radio-Havana-Cuba-QSL-Front","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/04\/Radio-Havana-Cuba-QSL-Front-1024x714.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/04\/Radio-Havana-Cuba-QSL-Front-1024x714.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/04\/Radio-Havana-Cuba-QSL-Front-1024x714.jpg?resize=525%2C300 1.5x"},"classes":[]},{"id":18625,"url":"https:\/\/swling.com\/blog\/2016\/05\/remembering-the-5th-anniversary-of-radio-havana-cuba\/","url_meta":{"origin":48403,"position":1},"title":"Remembering the 5th anniversary of Radio Havana Cuba","author":"Thomas","date":"May 1, 2016","format":false,"excerpt":"Many thanks to SWLing Post reader, Jake, who writes: Just passing along this scan of an Associated Press story about the 5th anniversary of Radio Havana Cuba. It ran in The Virginian-Pilot on May 8, 1966. Fun read considering so many of us have listened to the station over the\u2026","rel":"","context":"In "Articles"","block_context":{"text":"Articles","link":"https:\/\/swling.com\/blog\/category\/articles\/"},"img":{"alt_text":"HalliDial","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2015\/08\/HalliDial-1024x400.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2015\/08\/HalliDial-1024x400.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2015\/08\/HalliDial-1024x400.jpg?resize=525%2C300 1.5x"},"classes":[]},{"id":49864,"url":"https:\/\/swling.com\/blog\/2021\/08\/bob-colegrove-on-the-joys-and-challenges-of-tuning-analog-radios\/","url_meta":{"origin":48403,"position":2},"title":"Bob Colegrove on “The Joys and Challenges of Tuning Analog Radios”","author":"Thomas","date":"August 1, 2021","format":false,"excerpt":"Many thanks to SWLing Post contributor, Bob Colegrove, who recently shared this excellent article and has kindly allowed me to share it here in the the Post. Bob prefaced it by saying, \"Being a retired technical writer, I started the attached article some time ago for my own amusement, but\u2026","rel":"","context":"In "Books"","block_context":{"text":"Books","link":"https:\/\/swling.com\/blog\/category\/books\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/08\/Bob-Colegrove-Book-1.jpeg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/08\/Bob-Colegrove-Book-1.jpeg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/08\/Bob-Colegrove-Book-1.jpeg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/08\/Bob-Colegrove-Book-1.jpeg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":49078,"url":"https:\/\/swling.com\/blog\/2021\/05\/guest-post-remembering-the-great-radio-moving-day-of-1941\/","url_meta":{"origin":48403,"position":3},"title":"Guest Post: Remembering the great “Radio Moving Day” of 1941","author":"Thomas","date":"May 30, 2021","format":false,"excerpt":"Many thanks to SWLing Post contributor, Bill Hemphill, who shares the following guest post and addendum to his most recent post on BBC Re-Tune messages: Radio Moving Day by Bill Hemphill (WD9EQD) After listening to the BBC \u201cRe-Tune\u201d broadcasts, it reminded me of when the United States had its own\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\/2021\/05\/Radio-Re-Tune-Day-1-2.jpeg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/05\/Radio-Re-Tune-Day-1-2.jpeg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/05\/Radio-Re-Tune-Day-1-2.jpeg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/05\/Radio-Re-Tune-Day-1-2.jpeg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":61040,"url":"https:\/\/swling.com\/blog\/2024\/11\/channel-6-fm-radio-stations\/","url_meta":{"origin":48403,"position":4},"title":"Channel 6 FM Radio Stations","author":"Thomas","date":"November 10, 2024","format":false,"excerpt":"Many thanks to\u00a0SWLing Post\u00a0contributor,\u00a0Bob Colegrove, who shares the following guest post: Channel 6 Radio Stations By Bob Colegrove Even after all these years, I still find occasional surprises while playing with radios.\u00a0 How did I miss this one?\u00a0 I recently did what I thought was a definitive audit of the\u2026","rel":"","context":"In "FM"","block_context":{"text":"FM","link":"https:\/\/swling.com\/blog\/category\/fm\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2024\/11\/Fig-1.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2024\/11\/Fig-1.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2024\/11\/Fig-1.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2024\/11\/Fig-1.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2024\/11\/Fig-1.jpg?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":61368,"url":"https:\/\/swling.com\/blog\/2024\/12\/bobs-1968-radio-tirana-qsl-card\/","url_meta":{"origin":48403,"position":5},"title":"Bob’s 1968 Radio Tirana QSL Card","author":"Thomas","date":"December 12, 2024","format":false,"excerpt":"Many thanks to SWLing Post contributor Bob Colegrove, who writes: Kudos to Don Moore for his excellently crafted article on Albanian radio. [...]Perhaps some might be interested to see a 1968 QSL from R. Tirana. Regards, Bob Colegrove Thank you for sharing this excellent Radio Tirana QSL card, Bob!","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\/2024\/12\/R-Tirana-Inside.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2024\/12\/R-Tirana-Inside.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2024\/12\/R-Tirana-Inside.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2024\/12\/R-Tirana-Inside.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2024\/12\/R-Tirana-Inside.jpg?resize=1050%2C600&ssl=1 3x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/48403","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=48403"}],"version-history":[{"count":0,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/48403\/revisions"}],"wp:attachment":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/media?parent=48403"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/categories?post=48403"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/tags?post=48403"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}