{"id":13632,"date":"2025-03-25T21:16:40","date_gmt":"2025-03-25T15:46:40","guid":{"rendered":"https:\/\/johnsonfrancis.org\/techworld\/?p=13632"},"modified":"2025-03-25T22:42:14","modified_gmt":"2025-03-25T17:12:14","slug":"my-new-automatic-antenna-tuner","status":"publish","type":"post","link":"https:\/\/johnsonfrancis.org\/techworld\/my-new-automatic-antenna-tuner\/","title":{"rendered":"My New Automatic Antenna Tuner"},"content":{"rendered":"<p><iframe loading=\"lazy\" width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/KDrDQK3f2uM?si=QAoDO1VenjsjHWby\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n\n\n<p class=\"wp-block-paragraph\">Received my new automatic antenna tuner just now and I am happy to share the unboxing video with you. It is of N7DDC design. Accuracy of power measurement is 10% error range. Maximum inductance is 8.54 microhenries and the maximum capacitance 1870 pF. Minimum inductance step is 0.05 microhenries and minimum capacitance step is 10 pF. Microcontroller is ATMega328. Display is OLED. Tuning impedance range is 10 to 300 ohms.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Received my new automatic antenna tuner just now and I am happy to share the unboxing video with you. It is of N7DDC design. Accuracy of power measurement is 10% error range. Maximum inductance is 8.54 microhenries and the maximum capacitance 1870 pF. Minimum inductance step is 0.05 microhenries and minimum capacitance step is 10 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":13633,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-13632","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-amateur-radio-ham-radio"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>My New Automatic Antenna Tuner - Johnson&#039;s Techworld<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/johnsonfrancis.org\/techworld\/my-new-automatic-antenna-tuner\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"My New Automatic Antenna Tuner - Johnson&#039;s Techworld\" \/>\n<meta property=\"og:description\" content=\"Received my new automatic antenna tuner just now and I am happy to share the unboxing video with you. It is of N7DDC design. Accuracy of power measurement is 10% error range. Maximum inductance is 8.54 microhenries and the maximum capacitance 1870 pF. 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Originally licensed as VU2JFP with Grade 1 license in 1985. Upgraded to Advanced Grade in 1988 and was allotted new callsign to VU2JO\",\"sameAs\":[\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\",\"https:\\\/\\\/www.youtube.com\\\/@johnsonstechworld\\\/\"],\"url\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/author\\\/jf\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"My New Automatic Antenna Tuner - Johnson&#039;s Techworld","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/johnsonfrancis.org\/techworld\/my-new-automatic-antenna-tuner\/","og_locale":"en_US","og_type":"article","og_title":"My New Automatic Antenna Tuner - Johnson&#039;s Techworld","og_description":"Received my new automatic antenna tuner just now and I am happy to share the unboxing video with you. It is of N7DDC design. 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