{"id":42133,"date":"2020-02-29T06:00:03","date_gmt":"2020-02-29T10:00:03","guid":{"rendered":"https:\/\/swling.com\/blog\/?p=42133"},"modified":"2020-02-22T08:50:38","modified_gmt":"2020-02-22T12:50:38","slug":"mit-video-how-antennas-work","status":"publish","type":"post","link":"https:\/\/swling.com\/blog\/2020\/02\/mit-video-how-antennas-work\/","title":{"rendered":"MIT Video: How antennas work"},"content":{"rendered":"<div class=\"mceTemp\"><\/div>\n<div id=\"attachment_21554\" style=\"width: 730px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/swling.com\/blog\/wp-content\/uploads\/2016\/09\/Wellbrook-Mark-Fahey.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-21554\" class=\"size-full wp-image-21554\" src=\"https:\/\/swling.com\/blog\/wp-content\/uploads\/2016\/09\/Wellbrook-Mark-Fahey.jpg\" alt=\"\" width=\"720\" height=\"960\" srcset=\"https:\/\/swling.com\/blog\/wp-content\/uploads\/2016\/09\/Wellbrook-Mark-Fahey.jpg 720w, https:\/\/swling.com\/blog\/wp-content\/uploads\/2016\/09\/Wellbrook-Mark-Fahey-225x300.jpg 225w, https:\/\/swling.com\/blog\/wp-content\/uploads\/2016\/09\/Wellbrook-Mark-Fahey-624x832.jpg 624w\" sizes=\"auto, (max-width: 720px) 100vw, 720px\" \/><\/a><p id=\"caption-attachment-21554\" class=\"wp-caption-text\">Photo by Mark Fahey<\/p><\/div>\n<p>Many thanks to\u00a0<em>SWLing Post<\/em>\u00a0contributor,\u00a0<a href=\"http:\/\/w4.vp9kf.com\/\" target=\"_blank\" rel=\"noopener noreferrer\">Paul Evans<\/a>, who shares the following <a href=\"https:\/\/youtu.be\/rokAuaL2E74\" target=\"_blank\" rel=\"noopener noreferrer\">video<\/a> from an MIT\/W1MX presentation series:<\/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\/rokAuaL2E74?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","protected":false},"excerpt":{"rendered":"<p>Many thanks to\u00a0SWLing Post\u00a0contributor,\u00a0Paul Evans, who shares the following video from an MIT\/W1MX presentation series:<\/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":[3607,627,3,304],"tags":[1643,7541,7864,4093,7542],"class_list":["post-42133","post","type-post","status-publish","format-standard","hentry","category-antennas","category-how-to","category-news","category-videos","tag-antennas","tag-mit","tag-paul-evans-w4-vp9kf","tag-videos","tag-w1mx"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/pn3uc-aXz","jetpack-related-posts":[{"id":35538,"url":"https:\/\/swling.com\/blog\/2019\/01\/m-i-t-radio-society-public-lectures-covering-all-aspects-of-radio\/","url_meta":{"origin":42133,"position":0},"title":"M.I.T. Radio Society: Public lectures covering all aspects of radio","author":"Thomas","date":"January 17, 2019","format":false,"excerpt":"Many thanks to SWLing Post contributor, Jennifer Waits, who notes that The Massachusetts Institute of Technology Radio Society (W1MX) and the Department of Electrical Engineering and Computer Science (EECS) are presenting a series of radio-related lectures covering a wide array of topics, \"from the design of modern wireless communications systems\u2026","rel":"","context":"In &quot;Ham Radio&quot;","block_context":{"text":"Ham Radio","link":"https:\/\/swling.com\/blog\/category\/ham-radio\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/01\/MIT-QSL.png?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":49586,"url":"https:\/\/swling.com\/blog\/2021\/07\/mike-harwood-explores-active-magnetic-loop-antennas-with-sdrplay\/","url_meta":{"origin":42133,"position":1},"title":"Mike Harwood explores active magnetic loop antennas with SDRplay","author":"Thomas","date":"July 11, 2021","format":false,"excerpt":"Many thanks to Jon Hudson with SDRplay who shares the following announcement: Introducing a new series of videos comparing the performance of wideband active loop amplifier\/antennas for HF frequencies and below. In this introductory video, Mike Harwood shows how an RSPduo enables a real-time comparison of two antennas - in\u2026","rel":"","context":"In &quot;Antennas&quot;","block_context":{"text":"Antennas","link":"https:\/\/swling.com\/blog\/category\/antennas\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2018\/05\/SDRplay-RSPduo-Antenna-Ports-Angle-2.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2018\/05\/SDRplay-RSPduo-Antenna-Ports-Angle-2.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2018\/05\/SDRplay-RSPduo-Antenna-Ports-Angle-2.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2018\/05\/SDRplay-RSPduo-Antenna-Ports-Angle-2.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":22446,"url":"https:\/\/swling.com\/blog\/2016\/11\/a-preliminary-review-of-the-pk-loop-c-loop-hdsw6-18\/","url_meta":{"origin":42133,"position":2},"title":"A preliminary review of the PK Loop C-LOOP-HDSW6-18","author":"Thomas","date":"November 30, 2016","format":false,"excerpt":"Over the past year, a number of SWLing Post readers have asked me to review the PK Loop portable magnetic loop antenna produced by\u00a0Paul Karlstrand in Australia. I finally caved in and purchased one. I ordered the shortwave version of the loop, the\u00a0 C-LOOP-HDSW6-18 in early November and received it\u2026","rel":"","context":"In &quot;Accessories&quot;","block_context":{"text":"Accessories","link":"https:\/\/swling.com\/blog\/category\/accessories\/"},"img":{"alt_text":"eecraft-kx3-pk-loop","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/11\/Eecraft-KX3-PK-Loop-e1480359088711.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/11\/Eecraft-KX3-PK-Loop-e1480359088711.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/11\/Eecraft-KX3-PK-Loop-e1480359088711.jpg?resize=525%2C300 1.5x"},"classes":[]},{"id":27341,"url":"https:\/\/swling.com\/blog\/2017\/07\/video-pauls-large-aperture-volleyball-net-magnetic-loop-antenna\/","url_meta":{"origin":42133,"position":3},"title":"Video: Paul&#8217;s large aperture &#8220;Volleyball Net&#8221; loop antenna","author":"Thomas","date":"July 27, 2017","format":false,"excerpt":"Many thanks to SWLing Post contributor, Paul Walker, who shares the following video and notes: Here is a 10 minute narrated, detailed video on my 25 foot long by 10 foot tall \"Volleyball Net\" Loop antenna using a Wellbrook ALA100LN amp control head and antenna interface. https:\/\/www.youtube.com\/watch?v=ICHNlcLhAKE Click here to\u2026","rel":"","context":"In &quot;Antennas&quot;","block_context":{"text":"Antennas","link":"https:\/\/swling.com\/blog\/category\/antennas\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/07\/Volleyball-Loop-Antenna-e1501154690277.jpeg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/07\/Volleyball-Loop-Antenna-e1501154690277.jpeg?resize=350%2C200 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/07\/Volleyball-Loop-Antenna-e1501154690277.jpeg?resize=525%2C300 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/07\/Volleyball-Loop-Antenna-e1501154690277.jpeg?resize=700%2C400 2x"},"classes":[]},{"id":50092,"url":"https:\/\/swling.com\/blog\/2021\/08\/mike-compares-four-active-mag-loop-antennas\/","url_meta":{"origin":42133,"position":4},"title":"Mike compares four active mag loop antennas","author":"Thomas","date":"August 28, 2021","format":false,"excerpt":"Many thanks to Jon Hudson who shared the following on the SDRplay Facebook page: In this new video, Mike Harwood compares 4 different active mag loop antenna at various frequencies up to 52MHz using two SDRplay RSPduos which allowed simultaneous spectrum snapshots of the 4 loops in action with real\u2026","rel":"","context":"In &quot;Antennas&quot;","block_context":{"text":"Antennas","link":"https:\/\/swling.com\/blog\/category\/antennas\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2018\/02\/MFJ-Mag-Loop-Antenna.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2018\/02\/MFJ-Mag-Loop-Antenna.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2018\/02\/MFJ-Mag-Loop-Antenna.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2018\/02\/MFJ-Mag-Loop-Antenna.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":38506,"url":"https:\/\/swling.com\/blog\/2019\/07\/mla-30-loop-antenna-unboxing-video\/","url_meta":{"origin":42133,"position":5},"title":"MLA-30 loop antenna unboxing video","author":"Thomas","date":"July 15, 2019","format":false,"excerpt":"Many thanks to SWLing Post contributor, Paul, who notes: This video is in Chinese, but at least we can see what's inside the box: https:\/\/youtu.be\/mM09pT1YbjU Click here to view on YouTube. Thanks for sharing, Paul. If you've ordered the MLA-30, please let us know your thoughts about the construction and\u2026","rel":"","context":"In &quot;Antennas&quot;","block_context":{"text":"Antennas","link":"https:\/\/swling.com\/blog\/category\/antennas\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/06\/Screen-Shot-2019-06-26-at-7.52.26-AM.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/06\/Screen-Shot-2019-06-26-at-7.52.26-AM.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/06\/Screen-Shot-2019-06-26-at-7.52.26-AM.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/06\/Screen-Shot-2019-06-26-at-7.52.26-AM.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/42133","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=42133"}],"version-history":[{"count":0,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/42133\/revisions"}],"wp:attachment":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/media?parent=42133"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/categories?post=42133"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/tags?post=42133"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}