{"id":7238,"date":"2013-11-13T22:41:00","date_gmt":"2013-11-13T11:41:00","guid":{"rendered":"https:\/\/www.homebrewradio.us\/blog\/2013\/11\/13\/bitx-build-update-19-layout-vxo-bal-mod-filter-pa\/"},"modified":"2025-07-21T22:36:51","modified_gmt":"2025-07-21T12:36:51","slug":"bitx-build-update-19-layout-vxo-bal-mod-filter-pa","status":"publish","type":"post","link":"https:\/\/www.homebrewradio.us\/blog\/2013\/11\/13\/bitx-build-update-19-layout-vxo-bal-mod-filter-pa\/","title":{"rendered":"BITX Build Update #19 Layout, VXO, Bal Mod, Filter, PA"},"content":{"rendered":"

<\/p>\n

<\/a><\/div>\n

The files of the BITX20 Yahoo group were very useful to me during my BITX build. So I have decided to make a contribution myself. I uploaded a few drawings today. Here is how I laid out the circuitry on my 8 inch by 11 inch copper clad board. I included the isolation (Manhattan) pads for one of the bidirectional amps. <\/b>

<\/b> <\/p>\n

<\/a><\/div>\n

Here is the VXO. I built is on a separate board, but I could have put it on the main board. <\/b>

<\/b> <\/p>\n

<\/a><\/div>\n

Here is the balanced modulator and crystal filter. <\/b><\/p>\n

<\/a><\/div>\n
<\/a> <\/div>\n

Here is the power amplifier circuitry. Amazingly easy to stabilize. <\/b>

<\/b>
Our book: “SolderSmoke — Global Adventures in Wireless Electronics” http:\/\/soldersmoke.com\/book.htm<\/a> Our coffee mugs, T-Shirts, bumper stickers: http:\/\/www.cafepress.com\/SolderSmoke<\/a> Our Book Store: http:\/\/astore.amazon.com\/contracross-20<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

The files of the BITX20 Yahoo group were very useful to me during my BITX build. So I have decided to make a contribution myself. I uploaded a few drawings today. Here is how I laid out the circuitry on my 8 inch by 11 inch copper clad board. I included the isolation (Manhattan) pads … Continue reading “BITX Build Update #19 Layout, VXO, Bal Mod, Filter, PA”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":7239,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[28],"tags":[],"class_list":["post-7238","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bitx20"],"_links":{"self":[{"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/posts\/7238","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=7238"}],"version-history":[{"count":1,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/posts\/7238\/revisions"}],"predecessor-version":[{"id":7244,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/posts\/7238\/revisions\/7244"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/media\/7239"}],"wp:attachment":[{"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/media?parent=7238"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/categories?post=7238"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/tags?post=7238"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}