{"id":7559,"date":"2012-05-13T10:23:00","date_gmt":"2012-05-13T00:23:00","guid":{"rendered":"https:\/\/www.homebrewradio.us\/blog\/2012\/05\/13\/sibeband-inversion-9-mhz-5-mhz-and-the-arrl-handbook\/"},"modified":"2012-05-13T10:23:00","modified_gmt":"2012-05-13T00:23:00","slug":"sibeband-inversion-9-mhz-5-mhz-and-the-arrl-handbook","status":"publish","type":"post","link":"https:\/\/www.homebrewradio.us\/blog\/2012\/05\/13\/sibeband-inversion-9-mhz-5-mhz-and-the-arrl-handbook\/","title":{"rendered":"Sibeband Inversion:  9 MHz, 5 MHz, and the ARRL Handbook"},"content":{"rendered":"<p><span style=\"font-size: large;\"><b>The 2006 ARRL Handbook had it right. Jeremiah went back and took a look: <\/b><\/span><br \/> <span style=\"font-size: large;\"><b><br \/><\/b><\/span><br \/> <span style=\"font-size: large;\"><b>Bill:<\/b><\/span> <\/p>\n<div> <span style=\"font-size: large;\"><b><br \/><\/b><\/span><\/div>\n<div> <span style=\"font-size: large;\"><b>I have a comment about the question of the LSB\/USB convention mentioned in the most recent SolderSmoke podcast and the follow up blog post: <\/b><\/span><\/div>\n<div> <span style=\"font-size: large;\"><b><br \/><\/b><\/span><\/div>\n<div> <span style=\"font-size: large;\"><b>I checked the 2006 Handbook and there is a sidebar (page 9.27) explaining the 5\/9 MHz connection with the Lower\/Upper Sideband convention in use today. It explains that there was a popular rig that used a 5 MHz VFO and a 9 MHZ IF that were mixed to create the 75\/20 meter RF signals. This is certainly a reasonable method, but would not result in the inversion. The article then goes on to explain, however, that other rigs used a 5 MHz tunable IF and a 9 MHz local oscillator which would indeed result in sideband inversion and thus the convention we use today. <\/b><\/span><\/div>\n<div> <span style=\"font-size: large;\"><b><br \/><\/b><\/span><\/div>\n<div> <span style=\"font-size: large;\"><b>73,<\/b><\/span><\/div>\n<div> <span style=\"font-size: large;\"><b>Jeremiah, KB0OFF<\/b><\/span><\/div>\n<p> Our book: &#8220;SolderSmoke &#8212; Global Adventures in Wireless Electronics&#8221; <a href=\"http:\/\/soldersmoke.com\/book.htm\">http:\/\/soldersmoke.com\/book.htm<\/a> Our coffee mugs, T-Shirts, bumper stickers: <a href=\"http:\/\/www.cafepress.com\/SolderSmoke\">http:\/\/www.cafepress.com\/SolderSmoke<\/a> Our Book Store: <a href=\"http:\/\/astore.amazon.com\/contracross-20\">http:\/\/astore.amazon.com\/contracross-20<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The 2006 ARRL Handbook had it right. Jeremiah went back and took a look: Bill: I have a comment about the question of the LSB\/USB convention mentioned in the most recent SolderSmoke podcast and the follow up blog post: I checked the 2006 Handbook and there is a sidebar (page 9.27) explaining the 5\/9 MHz &hellip; <a href=\"https:\/\/www.homebrewradio.us\/blog\/2012\/05\/13\/sibeband-inversion-9-mhz-5-mhz-and-the-arrl-handbook\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Sibeband Inversion:  9 MHz, 5 MHz, and the ARRL Handbook&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[31,23],"tags":[],"class_list":["post-7559","post","type-post","status-publish","format-standard","hentry","category-radio-history","category-ssb"],"_links":{"self":[{"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/posts\/7559","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\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/comments?post=7559"}],"version-history":[{"count":0,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/posts\/7559\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/media?parent=7559"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/categories?post=7559"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/tags?post=7559"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}