{"id":10893,"date":"2020-05-02T10:29:00","date_gmt":"2020-05-02T00:29:00","guid":{"rendered":"https:\/\/www.homebrewradio.us\/blog\/2020\/05\/02\/idaho-homebrew-brian-ke7loy\/"},"modified":"2025-07-22T05:20:40","modified_gmt":"2025-07-21T19:20:40","slug":"idaho-homebrew-brian-ke7loy","status":"publish","type":"post","link":"https:\/\/www.homebrewradio.us\/blog\/2020\/05\/02\/idaho-homebrew-brian-ke7loy\/","title":{"rendered":"Idaho Homebrew — Brian KE7LOY"},"content":{"rendered":"
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Brian wrote (on Facebook): <\/b> <\/p>\n

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This (above) is a general Shortwave Superhet receiver I built over the winter. I chose to go modular so I could interchange some of the modules and make easy repairs and changes to the circuits. I used discreet components and only 2 integrated circuits. I built a Colpitt’s buffered oscillator which is remarkably stable, a Gilbert Cell Double Balanced Mixer, a high pass filter to filter out local AM broadcast station. The IF chain uses an old classic collins 455 khz mechanical filter amplified by a J310 feeding into an MC1350P IC… It’s using 2 germanium diodes as a detector feeding into an LM386 output amp. It’s very, very selective and sensitive. I added a 455 khz BFO (lower right in pic) the other day to tune in SSB and CW. This has been a fun experiment.<\/b><\/div>\n<\/p><\/div>\n
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https:\/\/www.qrz.com\/db\/KE7LOY<\/a><\/div>\n

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Brian wrote (on Facebook): This (above) is a general Shortwave Superhet receiver I built over the winter. I chose to go modular so I could interchange some of the modules and make easy repairs and changes to the circuits. I used discreet components and only 2 integrated circuits. I built a Colpitt’s buffered oscillator which … Continue reading “Idaho Homebrew — Brian KE7LOY”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":10894,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[534,57],"tags":[],"class_list":["post-10893","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-idaho","category-superhet-receivers"],"_links":{"self":[{"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/posts\/10893","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=10893"}],"version-history":[{"count":1,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/posts\/10893\/revisions"}],"predecessor-version":[{"id":10896,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/posts\/10893\/revisions\/10896"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/media\/10894"}],"wp:attachment":[{"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/media?parent=10893"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/categories?post=10893"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/tags?post=10893"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}