{"id":3658,"date":"2013-10-05T12:59:00","date_gmt":"2013-10-05T02:59:00","guid":{"rendered":"https:\/\/www.homebrewradio.us\/blog\/2013\/10\/05\/bitx-build-update-12-relay-and-pa-bitx-17-10\/"},"modified":"2025-07-21T15:51:19","modified_gmt":"2025-07-21T05:51:19","slug":"bitx-build-update-12-relay-and-pa-bitx-17-10","status":"publish","type":"post","link":"https:\/\/www.homebrewradio.us\/blog\/2013\/10\/05\/bitx-build-update-12-relay-and-pa-bitx-17-10\/","title":{"rendered":"BITX BUILD UPDATE #12 — Relay and PA, BITX 17\/10?"},"content":{"rendered":"
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As you can see, the board is starting to fill up. I really like it. It seems (to me) like the canvas of a painting approaching completion. This morning I put in the T\/R relay. That space in the upper left is reserved for the driver and the IRF510 Power Amplifier. <\/strong>
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I got some help from the Chief Designer this week. As noted in an earlier post, Farhan advised me to check the mixers. I knew that I had them wired correctly and that they were in fact mixing, but when Farhan advises you to check something, YOU CHECK IT. Farhan was right (see earlier post). <\/strong>
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It really sounds great. I know that the filter still has significant ripple in it, but the receiver sounds so good I’m reluctant to mess with it. Should I de-ripple it? <\/strong>
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On the train yesterday I was thinking about this rig, and it occurred to me that my 23.1 MHz VXO\/ 5 MHz IF arrangement means that this 17 meter transceiver could also generate signals on the 10 meter band. Of course, I’d have to build a second bandpass filter, but the radio gods guided my hand and caused me to leave space on the board for just such a filter (see above). I realize the IRF510 PA wouldn’t be too good up at those frequencies, but when the radio gods speak, you have to listen. <\/strong><\/p>\n

Our book: “SolderSmoke — Global Adventures in Wireless Electronics” http:\/\/soldersmoke.com\/book.htm<\/a> Our coffee mugs, T-Shirts, bumper stickers: http:\/\/www.cafepress.com\/SolderSmoke<\/a> Our Book Store: http:\/\/astore.amazon.com\/contracross-20<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

As you can see, the board is starting to fill up. I really like it. It seems (to me) like the canvas of a painting approaching completion. This morning I put in the T\/R relay. That space in the upper left is reserved for the driver and the IRF510 Power Amplifier. I got some help … Continue reading “BITX BUILD UPDATE #12 — Relay and PA, BITX 17\/10?”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":3659,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3658","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorised"],"_links":{"self":[{"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/posts\/3658","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=3658"}],"version-history":[{"count":1,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/posts\/3658\/revisions"}],"predecessor-version":[{"id":3660,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/posts\/3658\/revisions\/3660"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/media\/3659"}],"wp:attachment":[{"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/media?parent=3658"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/categories?post=3658"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/tags?post=3658"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}