{"id":2033,"date":"2008-05-15T04:48:00","date_gmt":"2008-05-14T18:48:00","guid":{"rendered":"https:\/\/www.homebrewradio.us\/blog\/2008\/05\/15\/fb-qrp-homebrew-from-india\/"},"modified":"2025-07-21T12:37:38","modified_gmt":"2025-07-21T02:37:38","slug":"fb-qrp-homebrew-from-india","status":"publish","type":"post","link":"https:\/\/www.homebrewradio.us\/blog\/2008\/05\/15\/fb-qrp-homebrew-from-india\/","title":{"rendered":"FB QRP Homebrew From India"},"content":{"rendered":"<p>I always liked the descriptions of the ingenious homebrew stations used by Indian radio amateurs. This morning I came across VU2LID&#8217;s site and found this:<\/p>\n<p><span style=\"font-style: italic; font-weight: bold;\"> A typical Indian QRP station will use a modified AM broadcast (BC) receiver, for the receiving part. The transmitter will usually have a final RF power amplifier using BD139 (or some power MOSFET like IRF530), driven by a Variable Frequency Oscillator (VFO) and chain of buffer\/driver amplifiers (2-3 stage). Most of the stations use Amplitude Modulation (AM). Commonly available medium power Hi-Fi audio amplifier modiles using integrated circuits (like the TBA810), driving a modulation transformer forms the AM modulator part.<\/p>\n<p><\/span><a onblur=\"try {parent.deselectBloggerImageGracefully();} catch(e) {}\" href=\"https:\/\/www.homebrewradio.us\/blog\/wp-content\/uploads\/2008\/05\/vu2ucy1.gif\"><img decoding=\"async\" style=\"margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;\" src=\"https:\/\/www.homebrewradio.us\/blog\/wp-content\/uploads\/2008\/05\/vu2ucy1.gif\" alt=\"\" id=\"BLOGGER_PHOTO_ID_5200463245966568098\" border=\"0\" \/><\/a><br \/>The above drawing was done by OM Bhasi, VU2UCY (SK)<\/p>\n","protected":false},"excerpt":{"rendered":"<p>I always liked the descriptions of the ingenious homebrew stations used by Indian radio amateurs. This morning I came across VU2LID&#8217;s site and found this: A typical Indian QRP station will use a modified AM broadcast (BC) receiver, for the receiving part. The transmitter will usually have a final RF power amplifier using BD139 (or &hellip; <a href=\"https:\/\/www.homebrewradio.us\/blog\/2008\/05\/15\/fb-qrp-homebrew-from-india\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;FB QRP Homebrew From India&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":2034,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[68,85],"tags":[],"class_list":["post-2033","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-india","category-minimalist-radio"],"_links":{"self":[{"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/posts\/2033","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=2033"}],"version-history":[{"count":1,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/posts\/2033\/revisions"}],"predecessor-version":[{"id":2035,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/posts\/2033\/revisions\/2035"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/media\/2034"}],"wp:attachment":[{"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/media?parent=2033"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/categories?post=2033"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/tags?post=2033"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}