{"id":4622,"date":"2025-02-01T21:40:00","date_gmt":"2025-02-01T10:40:00","guid":{"rendered":"https:\/\/www.homebrewradio.us\/blog\/2025\/02\/01\/soldersmoke-challenge-direct-conversion-receiver-the-band-pass-filter\/"},"modified":"2025-07-22T18:00:59","modified_gmt":"2025-07-22T08:00:59","slug":"soldersmoke-challenge-direct-conversion-receiver-the-band-pass-filter","status":"publish","type":"post","link":"https:\/\/www.homebrewradio.us\/blog\/2025\/02\/01\/soldersmoke-challenge-direct-conversion-receiver-the-band-pass-filter\/","title":{"rendered":"SolderSmoke Challenge \u2013 Direct Conversion Receiver \u2013 the Band Pass Filter"},"content":{"rendered":"<p><iframe loading=\"lazy\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen=\"\" frameborder=\"0\" height=\"247\" referrerpolicy=\"strict-origin-when-cross-origin\" src=\"https:\/\/www.youtube.com\/embed\/a-wzhIXccS0?si=V7JYtsreYRNMbZYu?rel=0\" title=\"YouTube video player\" width=\"440\"><\/iframe><\/p>\n<p> <b style=\"color: #222222; font-family: Arial, Helvetica, sans-serif; font-size: small;\">The SolderSmoke DCR challenge is going well. Our Discord server is bustling with activity and we are impressed that several intrepid homebrewers have already completed the receiver. So, we know that you can too! In this episode Dean, KK4DAS walks us through the design and construction of third of our four boards, the 40-meter band pass filter. The band pass filter ensures that the only signals that get through the receiver to the speaker are those that are in the 40-meter band. Dean also gives an update on the Challenge and discusses some recent improvements we&#8217;ve made to the circuits based on feedback from our builders. <\/b><\/p>\n<p class=\"MsoNormal\" style=\"background-color: white; color: #222222; font-family: Arial, Helvetica, sans-serif; font-size: small; margin: 0px;\"><u><\/u> <u><\/u><\/p>\n<p class=\"MsoNormal\" style=\"background-color: white; color: #222222; font-family: Arial, Helvetica, sans-serif; font-size: small; margin: 0px;\"><u><\/u> <u><\/u><\/p>\n<p class=\"MsoNormal\" style=\"background: white; color: #222222; font-family: Arial, Helvetica, sans-serif; font-size: small; margin: 0px;\"><b><span style=\"font-family: Arial, sans-serif; font-size: 12pt;\">Join the discussion &#8211; SolderSmoke Discord Server:<\/span><\/b><span style=\"font-family: Arial, sans-serif; font-size: 12pt;\"><u><\/u><u><\/u><\/span><\/p>\n<p class=\"MsoNormal\" style=\"background: white; color: #222222; font-family: Arial, Helvetica, sans-serif; font-size: small; margin: 0px;\"><b><span style=\"color: #1155cc; font-family: Arial, sans-serif; font-size: 12pt;\"><a data-saferedirecturl=\"https:\/\/www.google.com\/url?q=https:\/\/discord.gg\/Fu6B7yGxx2&#038;source=gmail&#038;ust=1738523447591000&#038;usg=AOvVaw004b87TwNp9j05bIvWGumQ\" href=\"https:\/\/discord.gg\/Fu6B7yGxx2\" style=\"color: #1155cc;\" target=\"_blank\"><span style=\"color: #0066cc;\">https:\/\/discord.gg\/Fu6B7yGxx2<\/span><\/a><\/span><\/b><span style=\"font-family: Arial, sans-serif; font-size: 12pt;\"><u><\/u><u><\/u><\/span><\/p>\n<p class=\"MsoNormal\" style=\"background: white; color: #222222; font-family: Arial, Helvetica, sans-serif; font-size: small; margin: 0px;\"><b><span style=\"font-family: Arial, sans-serif; font-size: 12pt;\"> <\/span><\/b><span style=\"font-family: Arial, sans-serif; font-size: 12pt;\"><u><\/u><u><\/u><\/span><\/p>\n<p class=\"MsoNormal\" style=\"background: white; color: #222222; font-family: Arial, Helvetica, sans-serif; font-size: small; margin: 0px;\"><b><span style=\"font-family: Arial, sans-serif; font-size: 12pt;\">Documentation on Hackaday:<\/span><\/b><span style=\"font-family: Arial, sans-serif; font-size: 12pt;\"><u><\/u><u><\/u><\/span><\/p>\n<p class=\"MsoNormal\" style=\"background: white; color: #222222; font-family: Arial, Helvetica, sans-serif; font-size: small; margin: 0px;\"><b><span style=\"font-family: Arial, sans-serif; font-size: 12pt;\"><a data-saferedirecturl=\"https:\/\/www.google.com\/url?q=https:\/\/hackaday.io\/project\/190327-high-schoolers-build-a-radio-receiver&#038;source=gmail&#038;ust=1738523447591000&#038;usg=AOvVaw3XvcUodypTITc9Xgplkzvn\" href=\"https:\/\/hackaday.io\/project\/190327-high-schoolers-build-a-radio-receiver\" style=\"color: #1155cc;\" target=\"_blank\">https:\/\/hackaday.io\/project\/<wbr><\/wbr>190327-high-schoolers-build-a-<wbr><\/wbr>radio-receiver<\/a><\/span><\/b><span style=\"font-family: Arial, sans-serif; font-size: 12pt;\"><u><\/u><u><\/u><\/span><\/p>\n<p class=\"MsoNormal\" style=\"background: white; color: #222222; font-family: Arial, Helvetica, sans-serif; font-size: small; margin: 0px;\"><b><span style=\"font-family: Arial, sans-serif; font-size: 12pt;\"> <\/span><\/b><span style=\"font-family: Arial, sans-serif; font-size: 12pt;\"><u><\/u><u><\/u><\/span><\/p>\n<p class=\"MsoNormal\" style=\"background: white; color: #222222; font-family: Arial, Helvetica, sans-serif; font-size: small; margin: 0px;\"><b><span style=\"font-family: Arial, sans-serif; font-size: 12pt;\">SolderSmoke YouTube channel:<\/span><\/b><span style=\"font-family: Arial, sans-serif; font-size: 12pt;\"><u><\/u><u><\/u><\/span><\/p>\n<p class=\"MsoNormal\" style=\"background: white; color: #222222; font-family: Arial, Helvetica, sans-serif; font-size: small; margin: 0px;\"><b><span style=\"font-family: Arial, sans-serif; font-size: 12pt;\"><a data-saferedirecturl=\"https:\/\/www.google.com\/url?q=https:\/\/www.youtube.com\/@soldersmoke&#038;source=gmail&#038;ust=1738523447591000&#038;usg=AOvVaw14rwkOfJiUCgFWUGQ3bFFv\" href=\"https:\/\/www.youtube.com\/@soldersmoke\" style=\"color: #1155cc;\" target=\"_blank\">https:\/\/www.youtube.com\/@<wbr><\/wbr>soldersmoke<\/a><\/span><\/b><span style=\"font-family: Arial, sans-serif; font-size: 12pt;\"><u><\/u><u><\/u><\/span><\/p>\n<p class=\"MsoNormal\" style=\"background: white; color: #222222; font-family: Arial, Helvetica, sans-serif; font-size: small; margin: 0px;\"><b><span style=\"font-family: Arial, sans-serif; font-size: 12pt;\"> <\/span><\/b><span style=\"font-family: Arial, sans-serif; font-size: 12pt;\"><u><\/u><u><\/u><\/span><\/p>\n<p class=\"MsoNormal\" style=\"background: white; color: #222222; font-family: Arial, Helvetica, sans-serif; font-size: small; margin: 0px;\"><b><span style=\"font-family: Arial, sans-serif; font-size: 12pt;\">SolderSmoke blog DCR posts:<\/span><\/b><span style=\"font-family: Arial, sans-serif; font-size: 12pt;\"><u><\/u><u><\/u><\/span><\/p>\n<p class=\"MsoNormal\" style=\"background: white; color: #222222; font-family: Arial, Helvetica, sans-serif; font-size: small; margin: 0px;\"><span style=\"font-family: Arial, sans-serif; font-size: 12pt;\"><a data-saferedirecturl=\"https:\/\/www.google.com\/url?q=https:\/\/soldersmoke.blogspot.com\/search\/label\/TJ%2520DC%2520RX&#038;source=gmail&#038;ust=1738523447591000&#038;usg=AOvVaw1TICnqd_IVbZ3ScO-4-9Rw\" href=\"https:\/\/soldersmoke.blogspot.com\/search\/label\/TJ%20DC%20RX\" style=\"color: #1155cc;\" target=\"_blank\"><b>https:\/\/soldersmoke.blogspot.<wbr><\/wbr>com\/search\/label\/TJ%20DC%20RX<\/b><\/a><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The SolderSmoke DCR challenge is going well. Our Discord server is bustling with activity and we are impressed that several intrepid homebrewers have already completed the receiver. So, we know that you can too! In this episode Dean, KK4DAS walks us through the design and construction of third of our four boards, the 40-meter band &hellip; <a href=\"https:\/\/www.homebrewradio.us\/blog\/2025\/02\/01\/soldersmoke-challenge-direct-conversion-receiver-the-band-pass-filter\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;SolderSmoke Challenge \u2013 Direct Conversion Receiver \u2013 the Band Pass Filter&#8221;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[35,248,90],"tags":[],"class_list":["post-4622","post","type-post","status-publish","format-standard","hentry","category-direct-conversion","category-direct-conversion-challenge","category-souleles-dean"],"_links":{"self":[{"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/posts\/4622","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/comments?post=4622"}],"version-history":[{"count":1,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/posts\/4622\/revisions"}],"predecessor-version":[{"id":11157,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/posts\/4622\/revisions\/11157"}],"wp:attachment":[{"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/media?parent=4622"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/categories?post=4622"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/tags?post=4622"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}