[Today’s Run: 3.2 miles]<\/p>\n\n\n\n
I moved ahead a little bit recently with the Eico HF-85 stereo preamp. I had ordered a custom multi-section power supply capacitor, and I’ve had that for awhile. The other day I made a list of all of the molded, rolled paper and electrolytics got those ordered. And they have arrived.<\/p>\n\n\n\n
The next step is to dive in and do the component replacement.<\/p>\n\n\n\n
That should take care of most of the electronics restoration. I have some further work to do on the knobs. I may need to order some plastic polish to get them into shape.<\/p>\n\n\n\n
In an old style stereo system the pre-amp is mostly a switching box. All of the sources are plugged into it and the output is plugged into a power amplifier which boosts the level to drive speakers. Eventually both the switching part and the amp part were combined into one box (like my Fisher X-100). Later iterations then combined the AM\/FM tuner with the switching amp to make something called a receiver. I think that is about as compact as things got while using vacuum tubes.<\/p>\n\n\n\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
[Today’s Run: 3.2 miles] I moved ahead a little bit recently with the Eico HF-85 stereo preamp. I had ordered a custom multi-section power supply capacitor, and I’ve had that for awhile. The other day I made a list of all of the molded, rolled paper and electrolytics got those ordered. And they have arrived. […]<\/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-8631","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\/8631","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=8631"}],"version-history":[{"count":1,"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=\/wp\/v2\/posts\/8631\/revisions"}],"predecessor-version":[{"id":8632,"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=\/wp\/v2\/posts\/8631\/revisions\/8632"}],"wp:attachment":[{"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=8631"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=8631"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=8631"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}