{"id":2055,"date":"2010-04-20T04:47:00","date_gmt":"2010-04-19T18:47:00","guid":{"rendered":"https:\/\/www.homebrewradio.us\/blog\/2010\/04\/20\/astable-multi-non-vibrator-help\/"},"modified":"2025-07-21T12:39:35","modified_gmt":"2025-07-21T02:39:35","slug":"astable-multi-non-vibrator-help","status":"publish","type":"post","link":"https:\/\/www.homebrewradio.us\/blog\/2010\/04\/20\/astable-multi-non-vibrator-help\/","title":{"rendered":"Astable Multi-NON-Vibrator (Help!)"},"content":{"rendered":"

Having made good progress on my Ugly, Discrete Component, DC recever for 30 meters, this week I turned my attention to the little QRSS transmitter that I mentioned last week. The idea is to run this thing out at the country house. The inspiration here comes from Hans Summer’s ultra-simple QRSS transmitter:<\/p>\n

\"\"<\/a>I ran into trouble this morning. The oscillator is running fine. But the little two transistor astable multivibator that is there to put some FSK on the signal is not vibrating. What am I doing wrong here? Instead of the BC-107s or 108s used by Hans, I’m using 2N2222s. Hans used 22uF caps. I didn’t have any, so I just put two 10uF electrolytic caps in parallel. But nothing happens. It just sits there. Any ideas? Hans was running his rig off bleach batteries and was struggling to keep current low — I don’t have this constraint, so maybe by using lower value resistors to the collectors and bases? <\/p>\n

Help me! Help me!<\/p>\n

(I apologize in advance if this posting results in ads for other kinds of vibrators!)<\/p>\n","protected":false},"excerpt":{"rendered":"

Having made good progress on my Ugly, Discrete Component, DC recever for 30 meters, this week I turned my attention to the little QRSS transmitter that I mentioned last week. The idea is to run this thing out at the country house. The inspiration here comes from Hans Summer’s ultra-simple QRSS transmitter: I ran into … Continue reading “Astable Multi-NON-Vibrator (Help!)”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":2056,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[165,198],"tags":[],"class_list":["post-2055","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-qrss","category-summers-hans"],"_links":{"self":[{"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/posts\/2055","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=2055"}],"version-history":[{"count":1,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/posts\/2055\/revisions"}],"predecessor-version":[{"id":2057,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/posts\/2055\/revisions\/2057"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/media\/2056"}],"wp:attachment":[{"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/media?parent=2055"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/categories?post=2055"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/tags?post=2055"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}