{"id":43826,"date":"2020-06-12T09:27:12","date_gmt":"2020-06-12T13:27:12","guid":{"rendered":"https:\/\/swling.com\/blog\/?p=43826"},"modified":"2020-06-12T09:27:41","modified_gmt":"2020-06-12T13:27:41","slug":"andy-seeks-advice-on-directly-coupling-an-am-loop-antenna-to-a-crystal-radio","status":"publish","type":"post","link":"https:\/\/swling.com\/blog\/2020\/06\/andy-seeks-advice-on-directly-coupling-an-am-loop-antenna-to-a-crystal-radio\/","title":{"rendered":"Andy seeks advice on directly coupling an AM loop antenna to a crystal radio"},"content":{"rendered":"
\"\"<\/a>

Andy would like to couple a similar antenna to a crystal receiver<\/p><\/div>\n

Many thanks to SWLing Post<\/em> contributor, Andy, who asks the following question in response to a previous post about building a Milk Crate AM Broadcast Loop Antenna<\/a>:<\/p>\n

All references to tuned loop antennas talk about no real connection to the AM radio, but merely inductive coupling.<\/p>\n

However, I made a very elementary crystal radio which has no ferrite core or antenna.<\/p>\n

I want this loop to be my primary (only) antenna, so I need to feed it directly to my tuning circuit. So I don\u2019t know if I should take a wire from any particular part of the loop, with another wire to ground\u2026 and if these 2 wires should be in parallel or series with the tuning elements of the loop antenna.<\/p>\n

Thanks!<\/p><\/blockquote>\n

Good question, Andy! Hopefully someone in the SWLing Post<\/em> community can comment<\/a> with some guidance!<\/p>\n","protected":false},"excerpt":{"rendered":"

Many thanks to SWLing Post contributor, Andy, who asks the following question in response to a previous post about building a Milk Crate AM Broadcast Loop Antenna: All references to tuned loop antennas talk about no real connection to the AM radio, but merely inductive coupling. However, I made a very elementary crystal radio which […]<\/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":[373,3607,3],"tags":[4339,617,4667,4357],"class_list":["post-43826","post","type-post","status-publish","format-standard","hentry","category-am","category-antennas","category-news","tag-am-passive-loop-antenna","tag-crystal-radio","tag-loop-antennas","tag-mag-loop-antennas"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/pn3uc-boS","jetpack-related-posts":[{"id":18772,"url":"https:\/\/swling.com\/blog\/2016\/07\/the-aaa-1c-an-affordable-loop-antenna-amplifier-kit\/","url_meta":{"origin":43826,"position":0},"title":"The AAA-1C: An affordable loop antenna amplifier kit","author":"Thomas","date":"July 19, 2016","format":false,"excerpt":"I recently stumbled upon the\u00a0Active Antenna Amplifier (model AAA-1C) by LZ1AQ. At 87.00 EUR, it's a pretty affordable and flexible solution for those who would like to design or use a loop antenna. According to the website, it packs a lot of features: 4 remotely switched modes (Loop A, Loop\u2026","rel":"","context":"In "Antennas"","block_context":{"text":"Antennas","link":"https:\/\/swling.com\/blog\/category\/antennas\/"},"img":{"alt_text":"Active-Antenna-the-kit-product-7","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/05\/Active-Antenna-the-kit-product-7.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/05\/Active-Antenna-the-kit-product-7.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/05\/Active-Antenna-the-kit-product-7.jpg?resize=525%2C300 1.5x"},"classes":[]},{"id":50098,"url":"https:\/\/swling.com\/blog\/2021\/08\/wire-antennas-vs-mag-loop-antennas\/","url_meta":{"origin":43826,"position":1},"title":"Wire antennas vs. mag loop antennas","author":"Thomas","date":"August 29, 2021","format":false,"excerpt":"In the past few weeks, I've gotten a lot of questions from readers who are trying to decide if they should install a magnetic loop antenna or a simple wire antenna at their home. Obviously, most of the questions come from shortwave radio listeners, but some have come from ham\u2026","rel":"","context":"In "Antennas"","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\/2014\/06\/Elecraft-KX3.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2014\/06\/Elecraft-KX3.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2014\/06\/Elecraft-KX3.jpg?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":36735,"url":"https:\/\/swling.com\/blog\/2019\/03\/giveaway-alert-joe-carrs-loop-antenna-handbook\/","url_meta":{"origin":43826,"position":2},"title":"Giveaway alert: Joe Carr’s Loop Antenna Handbook","author":"Thomas","date":"March 31, 2019","format":false,"excerpt":"--UPDATE: A WINNER HAS BEEN PICKED. THIS CONTEST HAS BEEN CLOSED. THANK YOU!-- Lately I've gotten a lot of questions from readers about magnetic loop antennas, certainly a\u00a0popular topic on the SWLing Post. Good discussions underway. So, when I discovered an extra copy of Joe Carr's excellent Loop Antenna Handbook\u2026","rel":"","context":"In "Antennas"","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\/03\/Joe-Carr-Loop-Antenna-Handbook-e1554041470650.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/03\/Joe-Carr-Loop-Antenna-Handbook-e1554041470650.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/03\/Joe-Carr-Loop-Antenna-Handbook-e1554041470650.jpg?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":30560,"url":"https:\/\/swling.com\/blog\/2018\/01\/kenneth-is-impressed-with-the-w6lvp-magnetic-loop-antenna\/","url_meta":{"origin":43826,"position":3},"title":"Kenneth is impressed with the W6LVP Magnetic Loop Antenna","author":"Thomas","date":"January 28, 2018","format":false,"excerpt":"Many thanks to SWLing Post contributor,\u00a0Kenneth Wigger, who writes: One Friday evening I contacted Larry W6LVP and asked a question about the kind of coax that he would recommend for his Magnetic Loop antenna. I was surprised to get a response with technical information within an hour or so. With\u2026","rel":"","context":"In "Antennas"","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\/02\/W6LVP-Mag-Loop-Antenna-772x1024.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/02\/W6LVP-Mag-Loop-Antenna-772x1024.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/02\/W6LVP-Mag-Loop-Antenna-772x1024.jpg?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":38451,"url":"https:\/\/swling.com\/blog\/2019\/07\/using-amplified-loop-antennas-with-portable-radios\/","url_meta":{"origin":43826,"position":4},"title":"Using amplified loop antennas with portable radios?","author":"Thomas","date":"July 11, 2019","format":false,"excerpt":"Many thanks to SWLing Post contributor, Marty, who writes: I have a question about loop antennas; specifically which type is \"better,\" passive magnetic loops or active electric loops? I know, \"It depends.\"--? I live in a ground-floor apartment, with a small porch, lots of RFI and restrictions against visible antennas.\u2026","rel":"","context":"In "Antennas"","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\/01\/Klaus-Mag-Loop-Antenna.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/01\/Klaus-Mag-Loop-Antenna.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/01\/Klaus-Mag-Loop-Antenna.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/01\/Klaus-Mag-Loop-Antenna.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":39811,"url":"https:\/\/swling.com\/blog\/2019\/09\/marty-needs-advice-as-he-builds-a-passive-magnetic-loop-antenna\/","url_meta":{"origin":43826,"position":5},"title":"Marty needs advice as he builds a passive magnetic loop antenna","author":"Thomas","date":"September 25, 2019","format":false,"excerpt":"Many thanks to SWLing Post contributor, Marty Kraft, who asked that I share the following question with our community: I\u2019m still working on a receive-only passive hula loop magnetic antenna for my Tecsun PL-660. After viewing thousands of YouTube videos (LOL), I built the PVC-pipe structure [you can see in\u2026","rel":"","context":"In "Antennas"","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\/09\/Loop-antenna.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/09\/Loop-antenna.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/09\/Loop-antenna.jpg?resize=525%2C300&ssl=1 1.5x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/43826","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=43826"}],"version-history":[{"count":0,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/43826\/revisions"}],"wp:attachment":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/media?parent=43826"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/categories?post=43826"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/tags?post=43826"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}