{"id":659,"date":"2022-10-07T15:11:00","date_gmt":"2022-10-07T04:11:00","guid":{"rendered":"https:\/\/www.homebrewradio.us\/blog\/2022\/10\/07\/how-the-diode-ring-multiplies-by-1-and-1-the-secrets-of-the-diode-ring-plus-another-bandsweep-with-the-dc-rx\/"},"modified":"2025-07-22T18:02:55","modified_gmt":"2025-07-22T08:02:55","slug":"how-the-diode-ring-multiplies-by-1-and-1-the-secrets-of-the-diode-ring-plus-another-bandsweep-with-the-dc-rx","status":"publish","type":"post","link":"https:\/\/www.homebrewradio.us\/blog\/2022\/10\/07\/how-the-diode-ring-multiplies-by-1-and-1-the-secrets-of-the-diode-ring-plus-another-bandsweep-with-the-dc-rx\/","title":{"rendered":"How the Diode Ring Multiplies by 1 and -1 &#8212; &#8220;The Secrets of the Diode Ring&#8221;  &#8212;  Plus another Bandsweep with the DC RX"},"content":{"rendered":"<p><iframe loading=\"lazy\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen=\"\" frameborder=\"0\" height=\"247\" src=\"https:\/\/www.youtube.com\/embed\/wfa8rPBrGQQ?rel=0\" title=\"YouTube video player\" width=\"440\"><\/iframe><\/p>\n<div><\/div>\n<div><b><span face=\"Roboto, Arial, sans-serif\" style=\"background-color: #f9f9f9; color: #030303; font-size: 14px; white-space: pre-wrap;\">A deeper look into how the Diode Ring detector works: &#8220;the particular go of it.&#8221; Here I rely on a wonderful diagram from the RSGB. This diagram clearly shows how in this circuit, the switching action of the diodes &#8212; controlled by the VFO &#8212; results in sum and difference frequencies at the output. This is amazingly illuminating. I then tried to build this actual circuit. It works, but I am also getting a lot of AM breakthrough from a local AM station (WFAX) and Radio Marti at 7335 kHz. I will try again. In any case, the diagram shows how the diode ring does its thing! I need to beef up the Band Pass Filter. I tuned around a bit on 40 meters &#8212; you can listen. Students at a local high school have been trying to get the DC receiver I loaned to them going &#8212; they may be confused by the intricacies of SSB tuning. I will see them next week. <\/span><\/b><\/div>\n<div><b><br \/><\/b><\/div>\n<div><b>Here is the RSGB diagram that reveals the secrets of the Diode Ring. (Now that could be the title of a book or movie. I claim the rights to that!) Click on the image for a better view. <\/b><\/div>\n<div class=\"separator\" style=\"clear: both; text-align: center;\"><a href=\"https:\/\/www.homebrewradio.us\/blog\/wp-content\/uploads\/2022\/10\/Diode20Ring20Diagram.jpg\" style=\"margin-left: 1em; margin-right: 1em;\"><img loading=\"lazy\" decoding=\"async\" border=\"0\" data-original-height=\"976\" data-original-width=\"1600\" height=\"244\" src=\"https:\/\/www.homebrewradio.us\/blog\/wp-content\/uploads\/2022\/10\/Diode20Ring20Diagram.jpg\" width=\"400\" \/><\/a><\/div>\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>A deeper look into how the Diode Ring detector works: &#8220;the particular go of it.&#8221; Here I rely on a wonderful diagram from the RSGB. This diagram clearly shows how in this circuit, the switching action of the diodes &#8212; controlled by the VFO &#8212; results in sum and difference frequencies at the output. This &hellip; <a href=\"https:\/\/www.homebrewradio.us\/blog\/2022\/10\/07\/how-the-diode-ring-multiplies-by-1-and-1-the-secrets-of-the-diode-ring-plus-another-bandsweep-with-the-dc-rx\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;How the Diode Ring Multiplies by 1 and -1 &#8212; &#8220;The Secrets of the Diode Ring&#8221;  &#8212;  Plus another Bandsweep with the DC RX&#8221;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":660,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[42,35,16,34,12,119],"tags":[],"class_list":["post-659","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-40-meters","category-direct-conversion","category-filters","category-mixer-theory","category-tj-dc-rx","category-uk"],"_links":{"self":[{"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/posts\/659","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=659"}],"version-history":[{"count":1,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/posts\/659\/revisions"}],"predecessor-version":[{"id":661,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/posts\/659\/revisions\/661"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/media\/660"}],"wp:attachment":[{"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/media?parent=659"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/categories?post=659"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/tags?post=659"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}