{"id":1630,"date":"2011-10-25T17:12:29","date_gmt":"2011-10-25T22:12:29","guid":{"rendered":"http:\/\/w0ep.us\/OM\/?p=1630"},"modified":"2011-10-25T17:12:29","modified_gmt":"2011-10-25T22:12:29","slug":"sx-11-pt-5","status":"publish","type":"post","link":"http:\/\/w0ep.us\/OM\/?p=1630","title":{"rendered":"SX-11 pt 5"},"content":{"rendered":"<p>[Today&#8217;s run: 2 miles with wife and dog]<\/p>\n<p>I worked on this radio all afternoon on Sunday.\u00a0 I tested the tubes, replaced a capacitor, and generally wrestled with it.\u00a0 I&#8217;m not sure I really did any good, but it was interesting.\u00a0 I feel like I know a bit about how it works.<\/p>\n<p>One thing that I went over multiple times:\u00a0 the BFO operates on 230 kHz while the IF is 460 kHz.\u00a0 I tweaked that thing every way I could see, even changed out a part, to no avail.\u00a0 I guess in the BFO mixer it must handle the 230 kHz ok.\u00a0 The BFO does appear to work, as in, do it&#8217;s job.<\/p>\n<p>You can see in this picture that I built an ugly speaker to use with this on the 500 Ohm port.\u00a0 It is just a regular 8 ohm speaker but I used a 120V\/12V\u00a0 transformer from my junk box.\u00a0 I have it wired up with the 120 side going to the radio and the 12 side going to the speaker.\u00a0 It seems to work ok:\u00a0 good sound and\u00a0 the controls are in normal operating range.\u00a0 The box I made for it is just plain ugly!<\/p>\n<p>I got it all buttoned up, then noticed a bad hum on the speaker.\u00a0 That&#8217;s not right.\u00a0 I&#8217;ll have to dive in again and see about that.<\/p>\n<p><a rel=\"attachment wp-att-1633\" href=\"http:\/\/w0ep.us\/OM\/?attachment_id=1633\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-medium wp-image-1633\" title=\"SX-11 v5\" src=\"http:\/\/w0ep.us\/OM\/wp-content\/uploads\/2011\/10\/GEDC0143-700x467.jpg\" alt=\"\" width=\"700\" height=\"467\" srcset=\"http:\/\/w0ep.us\/OM\/wp-content\/uploads\/2011\/10\/GEDC0143-700x467.jpg 700w, http:\/\/w0ep.us\/OM\/wp-content\/uploads\/2011\/10\/GEDC0143-1024x684.jpg 1024w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>[Today&#8217;s run: 2 miles with wife and dog] I worked on this radio all afternoon on Sunday.\u00a0 I tested the tubes, replaced a capacitor, and generally wrestled with it.\u00a0 I&#8217;m not sure I really did any good, but it was interesting.\u00a0 I feel like I know a bit about how it works. One thing that [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-1630","post","type-post","status-publish","format-standard","hentry","category-ham-radio"],"_links":{"self":[{"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=\/wp\/v2\/posts\/1630","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1630"}],"version-history":[{"count":5,"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=\/wp\/v2\/posts\/1630\/revisions"}],"predecessor-version":[{"id":1636,"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=\/wp\/v2\/posts\/1630\/revisions\/1636"}],"wp:attachment":[{"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1630"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1630"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1630"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}