{"id":10154,"date":"2024-02-07T10:48:00","date_gmt":"2024-02-06T23:48:00","guid":{"rendered":"https:\/\/www.homebrewradio.us\/blog\/2024\/02\/07\/videos-from-mike-ag5vg-his-homebrew-bitx-rigs\/"},"modified":"2025-07-22T18:01:42","modified_gmt":"2025-07-22T08:01:42","slug":"videos-from-mike-ag5vg-his-homebrew-bitx-rigs","status":"publish","type":"post","link":"https:\/\/www.homebrewradio.us\/blog\/2024\/02\/07\/videos-from-mike-ag5vg-his-homebrew-bitx-rigs\/","title":{"rendered":"Videos from Mike AG5VG &#8212; His Homebrew BITX Rigs"},"content":{"rendered":"<p><iframe loading=\"lazy\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen=\"\" frameborder=\"0\" height=\"247\" src=\"https:\/\/www.youtube.com\/embed\/hzVpyAN1tt4?si=DSAy4kSpH2fHy5wn?rel=0\" title=\"YouTube video player\" width=\"440\"><\/iframe><\/p>\n<div><\/div>\n<div><b>Here are two great videos from Mike AG5VG showing his two homebrew receivers in action. (The transmitter portions of Farhan&#8217;s circuit will come later.) See yesterday&#8217;s post for more details. <\/b><\/div>\n<div><b><br \/><\/b><\/div>\n<div><b>On the video above (40 meters) <\/b><\/div>\n<div><b>&#8212; I love that speaker. <\/b><\/div>\n<div><b>&#8212; The enclosure and the reduction drive for the VFO is really great. FB OM. <\/b><\/div>\n<div><b>&#8212; Very cool that Mike captures a 40 meter QSO with &#8220;Wild Bill&#8221; ZS6CCY in South Africa, someone who we&#8217;ve spoken to many times, often on the long path, sometimes from Mozambique. <\/b><\/div>\n<div><b>&#8212; I like how Mike demonstrates the effect of removing the antenna. You can definitely see what we mean when we say you should be able to &#8220;hear the band noise.&#8221; <\/b><\/div>\n<div><b> <\/b><\/div>\n<div><iframe loading=\"lazy\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen=\"\" frameborder=\"0\" height=\"247\" src=\"https:\/\/www.youtube.com\/embed\/1_2ApJCP9gQ?si=DDPEUKc_UD5mUe_q?rel=0\" title=\"YouTube video player\" width=\"440\"><\/iframe><\/div>\n<div><\/div>\n<div><b>Above you see the 20 meter receiver in action. You can see one of the physical benefits of using a wooden base: You can easily mount connectors, switches and tuning controls using just pieces of copper-clad board screwed into the wood. This is what I am doing with my latest BITX 15-10 rig. <\/b><\/div>\n<div><b><br \/><\/b><\/div>\n<div><b>For the tuning of the VFO, it looks to me as if Mike has a large &#8220;main tuning&#8221; control in the center, with a smaller &#8220;fine tuning&#8221; or &#8220;bandspread&#8221; control off to the left. Does that smaller control work with a varactor diode or with a smaller variable cap? Also, to the right of the main tuning control we see a 3 pole switch. Is that switch putting additional L or C into the VFO circuit to move the frequency around? These techniques would all be quite valid; Mike demonstrates that there are many ways to skin a cat (or tune a VFO!) <\/b><\/div>\n<div><b><br \/><\/b><\/div>\n<div><b>Mike: Please send more info. <\/b><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Here are two great videos from Mike AG5VG showing his two homebrew receivers in action. (The transmitter portions of Farhan&#8217;s circuit will come later.) See yesterday&#8217;s post for more details. On the video above (40 meters) &#8212; I love that speaker. &#8212; The enclosure and the reduction drive for the VFO is really great. FB &hellip; <a href=\"https:\/\/www.homebrewradio.us\/blog\/2024\/02\/07\/videos-from-mike-ag5vg-his-homebrew-bitx-rigs\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Videos from Mike AG5VG &#8212; His Homebrew BITX Rigs&#8221;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20,42,28,276,57,53],"tags":[],"class_list":["post-10154","post","type-post","status-publish","format-standard","hentry","category-20-meters","category-40-meters","category-bitx20","category-south-africa","category-superhet-receivers","category-vfo"],"_links":{"self":[{"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/posts\/10154","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\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/comments?post=10154"}],"version-history":[{"count":1,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/posts\/10154\/revisions"}],"predecessor-version":[{"id":11237,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/posts\/10154\/revisions\/11237"}],"wp:attachment":[{"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/media?parent=10154"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/categories?post=10154"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/tags?post=10154"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}