{"id":242,"date":"2017-09-13T12:45:18","date_gmt":"2017-09-13T19:45:18","guid":{"rendered":"http:\/\/www.andersknelson.com\/blog\/?p=242"},"modified":"2026-03-18T21:04:55","modified_gmt":"2026-03-19T01:04:55","slug":"microtac-4g","status":"publish","type":"post","link":"https:\/\/www.andersknelson.com\/blog\/?p=242","title":{"rendered":"MicroTAC GSM\/BT"},"content":{"rendered":"\n<p>Our parents&#8217; first mobile phone, probably.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Background<\/h2>\n\n\n\n<p>These phones are cheap on eBay and elsewhere, and so are simple GSM\/Bluetooth radio modules.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What it does<\/h2>\n\n\n\n<p>Makes and receives calls either by itself or as a Bluetooth extension to your existing mobile phone.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What it&#8217;s made of<\/h2>\n\n\n\n<p>Look for the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Motorola_MicroTAC\">MicroTAC models<\/a> with the dot-matrix display &#8211; they&#8217;re way cooler.<\/p>\n\n\n\n<p>Here are the models I have:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"http:\/\/www.mobilecollectors.net\/phone\/4885\/motorola-dynatac%2B8000f\">DynaTAC 8000F<\/a><\/li>\n\n\n\n<li><a href=\"http:\/\/www.mobilecollectors.net\/phone\/4674\/motorola-microtac%2B500__950__9800x\">MicroTAC 950<\/a><\/li>\n\n\n\n<li><a href=\"http:\/\/www.mobilecollectors.net\/phone\/3802\/motorola-microtac%2Balpha\">MicroTAC Alpha<\/a><\/li>\n\n\n\n<li><a href=\"http:\/\/www.mobilecollectors.net\/phone\/3886\/Motorola+MicroTAC+Elite\">MicroTAC Elite<\/a><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Theory of operation<\/h2>\n\n\n\n<h2 class=\"wp-block-heading\">Resources<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>https:\/\/www.adafruit.com\/product\/1946<\/li>\n\n\n\n<li>http:\/\/mobile4dev.blogspot.com\/2016\/07\/sda5714-led-display-working-with.html?m=1<\/li>\n\n\n\n<li>http:\/\/www.picaxe.com\/RTTTL-Ringtones-for-Tune-Command\/<\/li>\n\n\n\n<li>https:\/\/forum.arduino.cc\/index.php?topic=53358.0<\/li>\n\n\n\n<li>https:\/\/forum.arduino.cc\/index.php?topic=225485.0<\/li>\n\n\n\n<li>https:\/\/github.com\/cefn\/non-blocking-rtttl-arduino<\/li>\n\n\n\n<li>https:\/\/adamonsoon.github.io\/rtttl-play\/<\/li>\n\n\n\n<li>https:\/\/codepen.io\/mog13\/pen\/WYRJQJ<\/li>\n\n\n\n<li>https:\/\/www.pocket-lint.com\/phones\/news\/131502-best-and-worst-nokia-phones-ever<\/li>\n\n\n\n<li>https:\/\/hackaday.com\/2017\/01\/16\/shmoocon-2017-dig-out-your-old-brick-phone\/<\/li>\n\n\n\n<li>https:\/\/www.rtl-sdr.com\/tag\/amps\/<\/li>\n\n\n\n<li>https:\/\/github.com\/PetteriAimonen\/esp-walkie-talkie<\/li>\n\n\n\n<li>http:\/\/iot-bits.com\/interfacing-audio-codec-esp32\/<\/li>\n\n\n\n<li>https:\/\/github.com\/IoTBits\/ESP32_SGTL5000_driver<\/li>\n\n\n\n<li>https:\/\/github.com\/torvalds\/linux\/blob\/master\/sound\/soc\/codecs\/wm8960.c<\/li>\n\n\n\n<li>https:\/\/github.com\/TaraHoleInIt\/tarablessd1306<\/li>\n\n\n\n<li>https:\/\/www.makerfabs.com\/esp32-a1s-wifi-bt-soc-audio-module.html<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Gallery<\/h2>\n\n\n\n<p><a href=\"https:\/\/photos.app.goo.gl\/ha1a2HUgKykNFKfZA\">https:\/\/photos.app.goo.gl\/ha1a2HUgKykNFKfZA<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Our parents&#8217; first mobile phone, probably. Background These phones are [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":274,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[38,2],"tags":[],"class_list":["post-242","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-concept","category-projects"],"_links":{"self":[{"href":"https:\/\/www.andersknelson.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/242","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.andersknelson.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.andersknelson.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.andersknelson.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.andersknelson.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=242"}],"version-history":[{"count":13,"href":"https:\/\/www.andersknelson.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/242\/revisions"}],"predecessor-version":[{"id":1294,"href":"https:\/\/www.andersknelson.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/242\/revisions\/1294"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.andersknelson.com\/blog\/index.php?rest_route=\/wp\/v2\/media\/274"}],"wp:attachment":[{"href":"https:\/\/www.andersknelson.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=242"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.andersknelson.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=242"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.andersknelson.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=242"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}