{"id":4893,"date":"2019-08-21T21:29:00","date_gmt":"2019-08-21T11:29:00","guid":{"rendered":"https:\/\/www.homebrewradio.us\/blog\/2019\/08\/21\/another-bout-of-minimalist-regen-madness\/"},"modified":"2025-07-21T18:00:39","modified_gmt":"2025-07-21T08:00:39","slug":"another-bout-of-minimalist-regen-madness","status":"publish","type":"post","link":"https:\/\/www.homebrewradio.us\/blog\/2019\/08\/21\/another-bout-of-minimalist-regen-madness\/","title":{"rendered":"Another Bout of Minimalist Regen Madness"},"content":{"rendered":"
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My success with the Fish Soup 10 QRPp transceiver got me interested in further minimalization. About ten years ago I built a rig presented in SPRAT 108 as the ET-1 by Glen Yingling W2UW. It re-appeared in modified form as the FETer by G3XBM in SPRAT 137. <\/b>

<\/b> This rig uses just ONE active device, an MPF-102 FET that is switched via a 3 pole double throw switch from transmit to receive. The transistor is switched. The receiver is a regen and the transmitter is a very simple crystal controlled one stage oscillator. See: <\/b>
https:\/\/soldersmoke.blogspot.com\/search?q=ET-1<\/a> for info on my ET-1 effort. <\/b>
The transmitter was the easy part. I don’t think I made any contacts with this thing. That has been kind of bugging me. <\/b>

<\/b> So I tried it again. Again, I had trouble with the receiver. So I looked around for another single FET regen receiver design. I found one on AA7EE’s page. It was designed by N0WVA: <\/b>
https:\/\/aa7ee.wordpress.com\/2015\/02\/07\/n0wvas-one-fet-regen-optimized-for-ssbcw-sounds-great\/<\/b><\/a>

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I’ve had a variometer in my junk box since about 1994. (Given to me by Pericles HI8P. QEPD.) It was time to use it as the coil and ticker for this rig. I liked the green LED in the source, and the promise that this thing would not oscillate at audio frequencies. <\/b><\/div>\n

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I built in on one morning. See pictures. It works. I can hear CW stations. But I think I would have a tough time making contacts with this thing. OM Yingling worked 24 states with his ET-1. Respect. <\/b><\/div>\n

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My success with the Fish Soup 10 QRPp transceiver got me interested in further minimalization. About ten years ago I built a rig presented in SPRAT 108 as the ET-1 by Glen Yingling W2UW. It re-appeared in modified form as the FETer by G3XBM in SPRAT 137. This rig uses just ONE active device, an … Continue reading “Another Bout of Minimalist Regen Madness”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":4894,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[85,87,203,148,17],"tags":[],"class_list":["post-4893","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-minimalist-radio","category-qrp","category-regen","category-regens","category-sprat"],"_links":{"self":[{"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/posts\/4893","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=4893"}],"version-history":[{"count":1,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/posts\/4893\/revisions"}],"predecessor-version":[{"id":4897,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/posts\/4893\/revisions\/4897"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/media\/4894"}],"wp:attachment":[{"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/media?parent=4893"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/categories?post=4893"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/tags?post=4893"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}