[Today’s run: rest day]<\/p>\n
After nearly another day wasted on this old radio I finally found the problem.<\/p>\n
As frequently happens, most of the exercise was the result of a self-inflicted problem.\u00a0 I replaced a capacitor because I thought it was the wrong value.\u00a0 It wasn’t.\u00a0 And when I put in the new one I accidentally touched another part and made a very small flaw on it, which turned out to be the thing that caused the hours of searching.<\/p>\n
I finally found the problem.\u00a0 A small RF choke near the replaced capacitor was damaged.\u00a0 I had to wind a new one.\u00a0 (My inductance\/capacitance meter comes in really handy for this!)\u00a0 Once I did that I was pretty much back in business.<\/p>\n
I still have some VFO voltage regulation problems.\u00a0 I put in a new zener diode.\u00a0 We shall see if it can take the heat and dissipation.\u00a0 If that doesn’t hold up I can go to a three-terminal regulator or get a bigger zener.<\/p>\n
But the thing is playing now.\u00a0 It still has the chirp on CW.\u00a0 I talked to a guy tonight in Ohio and he said the chirp was not objectionable.<\/p>\n
I’m glad I was able to eventually find the problem.\u00a0 I enjoy the search.\u00a0 I’m not really very organized about it.\u00a0 This case was the usual: last thing touched turned out to be the neighborhood of what had gone wrong.<\/p>\n","protected":false},"excerpt":{"rendered":"
[Today’s run: rest day] After nearly another day wasted on this old radio I finally found the problem. As frequently happens, most of the exercise was the result of a self-inflicted problem.\u00a0 I replaced a capacitor because I thought it was the wrong value.\u00a0 It wasn’t.\u00a0 And when I put in the new one I […]<\/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-3155","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\/3155","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=3155"}],"version-history":[{"count":1,"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=\/wp\/v2\/posts\/3155\/revisions"}],"predecessor-version":[{"id":3156,"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=\/wp\/v2\/posts\/3155\/revisions\/3156"}],"wp:attachment":[{"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3155"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3155"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3155"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}