{"id":23435,"date":"2017-01-16T07:31:54","date_gmt":"2017-01-16T11:31:54","guid":{"rendered":"http:\/\/swling.com\/blog\/?p=23435"},"modified":"2017-01-16T07:31:54","modified_gmt":"2017-01-16T11:31:54","slug":"the-company-and-history-behind-the-boeing-707-hf-antenna-coupler","status":"publish","type":"post","link":"https:\/\/swling.com\/blog\/2017\/01\/the-company-and-history-behind-the-boeing-707-hf-antenna-coupler\/","title":{"rendered":"The company and history behind the Boeing 707 HF antenna coupler"},"content":{"rendered":"
<\/a>

(Source: Boeing)<\/p><\/div>\n

Many thanks to\u00a0David Giba who shares the following via the\u00a0Gary J. Cohen’s Shortwave Listeners Global Facebook page<\/a>:<\/p>\n

The Boeing 707 is my favorite commercial jetliner. If one looks at the tail they will see a probe pointing forward off the top of the tail. That is the HF shortwave antenna.<\/p>\n

\"\"<\/a>

(Source: VIP Club)<\/p><\/div>\n

It was matched by an antenna tuner\/transmatch much like we have in our HF radios. This is the story of the Univac Coupler. Very interesting.<\/p><\/blockquote>\n

Click here to read on the VIP Club website.<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

Many thanks to\u00a0David Giba who shares the following via the\u00a0Gary J. Cohen’s Shortwave Listeners Global Facebook page: The Boeing 707 is my favorite commercial jetliner. If one looks at the tail they will see a probe pointing forward off the top of the tail. That is the HF shortwave antenna. It was matched by an […]<\/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":[3607,3,288],"tags":[5830,5831,5828,5829],"class_list":["post-23435","post","type-post","status-publish","format-standard","hentry","category-antennas","category-news","category-radio-history","tag-boeing-707","tag-couplers","tag-david-giba","tag-gary-j-cohens-shortwave-listeners-global"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/pn3uc-65Z","jetpack-related-posts":[{"id":27191,"url":"https:\/\/swling.com\/blog\/2017\/07\/ebay-find-21-remotelocal-antenna-switch-26-99-shipped\/","url_meta":{"origin":23435,"position":0},"title":"eBay find: 2:1 Remote\/Local Antenna Switch $26.99 shipped","author":"Thomas","date":"July 17, 2017","format":false,"excerpt":"Many thanks to Kenneth Crips who recently shared an eBay link to this antenna switch on the Gary J. Cohen's Shortwave Listeners Global Facebook page. The switch is not a kit--it is pre-built and appears to contain quality parts. The manufacturer, Electro Resales, makes a number of other products for\u2026","rel":"","context":"In "Accessories"","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\/2017\/07\/Antenna-Switch-Back-1024x722.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/07\/Antenna-Switch-Back-1024x722.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/07\/Antenna-Switch-Back-1024x722.jpg?resize=525%2C300 1.5x"},"classes":[]},{"id":28407,"url":"https:\/\/swling.com\/blog\/2017\/09\/photos-of-wrmi-antenna-field-damage\/","url_meta":{"origin":23435,"position":1},"title":"Photos of WRMI antenna field damage","author":"Thomas","date":"September 19, 2017","format":false,"excerpt":"Since we've been following WRMI in the wake of Hurricane Irma, I've posted a few photos below that WRMI shared on their Facebook page. These photos give us an idea about the magnitude of damage to their antenna farm. Amazingly, Jeff White confirmed a few days ago that\u00a0WRMI is back\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\/2017\/09\/WRMI-Irma-damage5.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/09\/WRMI-Irma-damage5.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/09\/WRMI-Irma-damage5.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/09\/WRMI-Irma-damage5.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":22118,"url":"https:\/\/swling.com\/blog\/2016\/11\/nicholas-uses-android-phone-and-18-receiver-to-decode-voa-radiogram\/","url_meta":{"origin":23435,"position":2},"title":"Nicholas uses Android phone and $18 receiver to decode VOA Radiogram","author":"Thomas","date":"November 8, 2016","format":false,"excerpt":"Many thanks to\u00a0Nicholas Pospishil, who shares this photo and notes: \"VOA Radiogram on 5745 kHz. No fancy equipment needed.\" No kidding!\u00a0Mobile phones and tablets now have more than enough horsepower to decode most VOA Radiograms. Nicholas uses the free\u00a0AndFlmsg app for Android to decode.\u00a0Note that AndFlmsg is not available in\u2026","rel":"","context":"In "Apps"","block_context":{"text":"Apps","link":"https:\/\/swling.com\/blog\/category\/apps\/"},"img":{"alt_text":"voa-radiogram-decode-app","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/11\/VOA-Radiogram-Decode-App.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/11\/VOA-Radiogram-Decode-App.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/11\/VOA-Radiogram-Decode-App.jpg?resize=525%2C300 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/11\/VOA-Radiogram-Decode-App.jpg?resize=700%2C400 2x"},"classes":[]},{"id":12683,"url":"https:\/\/swling.com\/blog\/2015\/03\/missing-cities-mix\/","url_meta":{"origin":23435,"position":3},"title":"Missing Cities Mix","author":"Thomas","date":"March 18, 2015","format":false,"excerpt":"Regular SWLing Post\u00a0readers\u00a0may recall a peculiar VOLMET recording I published in 2013\u00a0where all of the regional aviation weather was noted as \"missing.\" My buddy, David Goren--you know, the fellow behind the Shortwave Shindig and Shortwaveology--gave me the original tip for that VOLMET broadcast. David recently posted a new\u00a0mix on\u00a0Soundcloud. David's\u2026","rel":"","context":"In "Music"","block_context":{"text":"Music","link":"https:\/\/swling.com\/blog\/category\/music\/"},"img":{"alt_text":"Aircraft-Jet-Boeing-VOLMET","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2015\/03\/Aircraft-Jet-Boeing-VOLMET.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2015\/03\/Aircraft-Jet-Boeing-VOLMET.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2015\/03\/Aircraft-Jet-Boeing-VOLMET.jpg?resize=525%2C300 1.5x"},"classes":[]},{"id":27549,"url":"https:\/\/swling.com\/blog\/2017\/08\/video-hf-tests-from-arecibo-observatory\/","url_meta":{"origin":23435,"position":4},"title":"Video: HF tests from Arecibo observatory","author":"Thomas","date":"August 13, 2017","format":false,"excerpt":"Many thanks to SWLing Post contributor,\u00a0Ivan Cholakov, who writes: Thomas, I did not see a story on the blog about the HF atmospheric heating experiments conducted by the Arecibo observatory a couple of weeks ago. Thomas Cholakov N1SPY made a video about it but I am also sure a bunch\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\/2017\/01\/Arecibo_Observatory_Aerial_View-1024x811.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/01\/Arecibo_Observatory_Aerial_View-1024x811.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/01\/Arecibo_Observatory_Aerial_View-1024x811.jpg?resize=525%2C300 1.5x"},"classes":[]},{"id":14526,"url":"https:\/\/swling.com\/blog\/2015\/09\/aeronautical-hf-radio-map\/","url_meta":{"origin":23435,"position":5},"title":"Aeronautical HF Radio Map","author":"Thomas","date":"September 3, 2015","format":false,"excerpt":"Many thanks to Craig Fuller who shared this excellent Aeronautical HF radio map on the Shortwave Listeners Global Facebook page. Click here\u00a0or here to download the map as a large graphic. Note that this map is 13 years old and somewhat out-of-date. \u00a0Paul Jones kindly posted some frequency updates to\u2026","rel":"","context":"In "News"","block_context":{"text":"News","link":"https:\/\/swling.com\/blog\/category\/news\/"},"img":{"alt_text":"MapasconFrecuenciasAereas","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2015\/09\/MapasconFrecuenciasAereas1.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2015\/09\/MapasconFrecuenciasAereas1.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2015\/09\/MapasconFrecuenciasAereas1.jpg?resize=525%2C300 1.5x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/23435","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=23435"}],"version-history":[{"count":0,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/23435\/revisions"}],"wp:attachment":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/media?parent=23435"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/categories?post=23435"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/tags?post=23435"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}