The new version does not have an audio IC on the pcb. The old version has a TDA2822.<\/p>\n
Which version of firmware works with the old or new board?<\/strong><\/p>\n You can use either firmware on either of the boards. The Circuit Diagram of the old PCB<\/p>\n <\/strong>You download the PDF as well.\u00a0\u00a0Click here<\/a><\/p>\n uBITX r3 (Archived) After May 26th, 2018, we have introduced a slightly updated version of the ubitx. This was promoted by the audio chip TDA2822 going out of production. We decided to carry out a few more minimal changes to the circuit. This page has the resources of the ealier version of the ubitx. How … Continue reading “uBITX r3 – Archived”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-345","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.hfsignals.com\/index.php\/wp-json\/wp\/v2\/pages\/345","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.hfsignals.com\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.hfsignals.com\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.hfsignals.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hfsignals.com\/index.php\/wp-json\/wp\/v2\/comments?post=345"}],"version-history":[{"count":1,"href":"https:\/\/www.hfsignals.com\/index.php\/wp-json\/wp\/v2\/pages\/345\/revisions"}],"predecessor-version":[{"id":346,"href":"https:\/\/www.hfsignals.com\/index.php\/wp-json\/wp\/v2\/pages\/345\/revisions\/346"}],"wp:attachment":[{"href":"https:\/\/www.hfsignals.com\/index.php\/wp-json\/wp\/v2\/media?parent=345"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\nThe old firmware is on\u00a0https:\/\/github.com\/afarhan\/ubitx<\/a>\u00a0.
\nThe new firmware is on\u00a0https:\/\/github.com\/afarhan\/ubitx4<\/a>\u00a0. We recommend you use the new firmware as it has a usabel CAT interface and the CW keying is much improved as well.<\/p>\n![\"\"](\"http:\/\/www.hfsignals.com\/wp-content\/uploads\/2017\/12\/ubitxr3.png\")
<\/p>\n","protected":false},"excerpt":{"rendered":"