{"id":13573,"date":"2025-03-22T08:45:51","date_gmt":"2025-03-22T03:15:51","guid":{"rendered":"https:\/\/johnsonfrancis.org\/techworld\/?p=13573"},"modified":"2025-03-22T11:38:09","modified_gmt":"2025-03-22T06:08:09","slug":"how-to-measure-the-characteristic-impedance-of-coaxial-cable-using-nanovna","status":"publish","type":"post","link":"https:\/\/johnsonfrancis.org\/techworld\/how-to-measure-the-characteristic-impedance-of-coaxial-cable-using-nanovna\/","title":{"rendered":"How to measure the characteristic impedance of coaxial cable using NanoVNA?"},"content":{"rendered":"<iframe loading=\"lazy\" width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/59B7fuZ-17M?si=KHtIfiGHr_C7Lob9\" 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>\n\n<p class=\"wp-block-paragraph\">I am going to use the method described by <a href=\"https:\/\/s21rc.net\/finding-impedance-and-velocity-factor-of-an-unknown-coaxial-cable-using-nanovna\/\">S21RC on his website<\/a> to measure the characteristic impedance of a coaxial cable using NanoVNA. For this Port 1 of the NanoVNA is being used. 50 ohms dummy load and appropriate connectors and crocodile clips when needed are being used along with the Smith chart in NanoVNA.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>I am going to use the method described by S21RC on his website to measure the characteristic impedance of a coaxial cable using NanoVNA. For this Port 1 of the NanoVNA is being used. 50 ohms dummy load and appropriate connectors and crocodile clips when needed are being used along with the Smith chart in [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":13575,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-13573","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>How to measure the characteristic impedance of coaxial cable using NanoVNA? - 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\/how-to-measure-the-characteristic-impedance-of-coaxial-cable-using-nanovna\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to measure the characteristic impedance of coaxial cable using NanoVNA? - Johnson&#039;s Techworld\" \/>\n<meta property=\"og:description\" content=\"I am going to use the method described by S21RC on his website to measure the characteristic impedance of a coaxial cable using NanoVNA. For this Port 1 of the NanoVNA is being used. 50 ohms dummy load and appropriate connectors and crocodile clips when needed are being used along with the Smith chart in [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/johnsonfrancis.org\/techworld\/how-to-measure-the-characteristic-impedance-of-coaxial-cable-using-nanovna\/\" \/>\n<meta property=\"og:site_name\" content=\"Johnson&#039;s Techworld\" \/>\n<meta property=\"article:published_time\" content=\"2025-03-22T03:15:51+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-03-22T06:08:09+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/johnsonfrancis.org\/techworld\/wp-content\/uploads\/2025\/03\/How-to-measure-the-characteristic-impedance-of-coaxial-cable-using-NanoVNA.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"676\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Johnson Francis\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Johnson Francis\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/how-to-measure-the-characteristic-impedance-of-coaxial-cable-using-nanovna\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/how-to-measure-the-characteristic-impedance-of-coaxial-cable-using-nanovna\\\/\"},\"author\":{\"name\":\"Johnson Francis\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/#\\\/schema\\\/person\\\/6201c843e80ccd3578e6196b1d007027\"},\"headline\":\"How to measure the characteristic impedance of coaxial cable using NanoVNA?\",\"datePublished\":\"2025-03-22T03:15:51+00:00\",\"dateModified\":\"2025-03-22T06:08:09+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/how-to-measure-the-characteristic-impedance-of-coaxial-cable-using-nanovna\\\/\"},\"wordCount\":66,\"publisher\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/#\\\/schema\\\/person\\\/6201c843e80ccd3578e6196b1d007027\"},\"image\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/how-to-measure-the-characteristic-impedance-of-coaxial-cable-using-nanovna\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/wp-content\\\/uploads\\\/2025\\\/03\\\/How-to-measure-the-characteristic-impedance-of-coaxial-cable-using-NanoVNA.jpg\",\"articleSection\":[\"Amateur Radio (Ham Radio)\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/how-to-measure-the-characteristic-impedance-of-coaxial-cable-using-nanovna\\\/\",\"url\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/how-to-measure-the-characteristic-impedance-of-coaxial-cable-using-nanovna\\\/\",\"name\":\"How to measure the characteristic impedance of coaxial cable using NanoVNA? - Johnson&#039;s Techworld\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/how-to-measure-the-characteristic-impedance-of-coaxial-cable-using-nanovna\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/how-to-measure-the-characteristic-impedance-of-coaxial-cable-using-nanovna\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/wp-content\\\/uploads\\\/2025\\\/03\\\/How-to-measure-the-characteristic-impedance-of-coaxial-cable-using-NanoVNA.jpg\",\"datePublished\":\"2025-03-22T03:15:51+00:00\",\"dateModified\":\"2025-03-22T06:08:09+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/how-to-measure-the-characteristic-impedance-of-coaxial-cable-using-nanovna\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/how-to-measure-the-characteristic-impedance-of-coaxial-cable-using-nanovna\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/how-to-measure-the-characteristic-impedance-of-coaxial-cable-using-nanovna\\\/#primaryimage\",\"url\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/wp-content\\\/uploads\\\/2025\\\/03\\\/How-to-measure-the-characteristic-impedance-of-coaxial-cable-using-NanoVNA.jpg\",\"contentUrl\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/wp-content\\\/uploads\\\/2025\\\/03\\\/How-to-measure-the-characteristic-impedance-of-coaxial-cable-using-NanoVNA.jpg\",\"width\":1200,\"height\":676},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/how-to-measure-the-characteristic-impedance-of-coaxial-cable-using-nanovna\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"How to measure the characteristic impedance of coaxial cable using NanoVNA?\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/#website\",\"url\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/\",\"name\":\"Johnson's Techworld\",\"description\":\"Johnson&#039;s Techworld\",\"publisher\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/#\\\/schema\\\/person\\\/6201c843e80ccd3578e6196b1d007027\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":[\"Person\",\"Organization\"],\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/#\\\/schema\\\/person\\\/6201c843e80ccd3578e6196b1d007027\",\"name\":\"Johnson Francis\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/wp-content\\\/uploads\\\/2025\\\/01\\\/channels4_profile.jpg\",\"url\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/wp-content\\\/uploads\\\/2025\\\/01\\\/channels4_profile.jpg\",\"contentUrl\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/wp-content\\\/uploads\\\/2025\\\/01\\\/channels4_profile.jpg\",\"width\":600,\"height\":600,\"caption\":\"Johnson Francis\"},\"logo\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/wp-content\\\/uploads\\\/2025\\\/01\\\/channels4_profile.jpg\"},\"description\":\"Amateur Radio Operator VU2JO. 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":"How to measure the characteristic impedance of coaxial cable using NanoVNA? - 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\/how-to-measure-the-characteristic-impedance-of-coaxial-cable-using-nanovna\/","og_locale":"en_US","og_type":"article","og_title":"How to measure the characteristic impedance of coaxial cable using NanoVNA? - Johnson&#039;s Techworld","og_description":"I am going to use the method described by S21RC on his website to measure the characteristic impedance of a coaxial cable using NanoVNA. For this Port 1 of the NanoVNA is being used. 50 ohms dummy load and appropriate connectors and crocodile clips when needed are being used along with the Smith chart in [&hellip;]","og_url":"https:\/\/johnsonfrancis.org\/techworld\/how-to-measure-the-characteristic-impedance-of-coaxial-cable-using-nanovna\/","og_site_name":"Johnson&#039;s Techworld","article_published_time":"2025-03-22T03:15:51+00:00","article_modified_time":"2025-03-22T06:08:09+00:00","og_image":[{"width":1200,"height":676,"url":"https:\/\/johnsonfrancis.org\/techworld\/wp-content\/uploads\/2025\/03\/How-to-measure-the-characteristic-impedance-of-coaxial-cable-using-NanoVNA.jpg","type":"image\/jpeg"}],"author":"Johnson Francis","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Johnson Francis","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/johnsonfrancis.org\/techworld\/how-to-measure-the-characteristic-impedance-of-coaxial-cable-using-nanovna\/#article","isPartOf":{"@id":"https:\/\/johnsonfrancis.org\/techworld\/how-to-measure-the-characteristic-impedance-of-coaxial-cable-using-nanovna\/"},"author":{"name":"Johnson Francis","@id":"https:\/\/johnsonfrancis.org\/techworld\/#\/schema\/person\/6201c843e80ccd3578e6196b1d007027"},"headline":"How to measure the characteristic impedance of coaxial cable using NanoVNA?","datePublished":"2025-03-22T03:15:51+00:00","dateModified":"2025-03-22T06:08:09+00:00","mainEntityOfPage":{"@id":"https:\/\/johnsonfrancis.org\/techworld\/how-to-measure-the-characteristic-impedance-of-coaxial-cable-using-nanovna\/"},"wordCount":66,"publisher":{"@id":"https:\/\/johnsonfrancis.org\/techworld\/#\/schema\/person\/6201c843e80ccd3578e6196b1d007027"},"image":{"@id":"https:\/\/johnsonfrancis.org\/techworld\/how-to-measure-the-characteristic-impedance-of-coaxial-cable-using-nanovna\/#primaryimage"},"thumbnailUrl":"https:\/\/johnsonfrancis.org\/techworld\/wp-content\/uploads\/2025\/03\/How-to-measure-the-characteristic-impedance-of-coaxial-cable-using-NanoVNA.jpg","articleSection":["Amateur Radio (Ham Radio)"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/johnsonfrancis.org\/techworld\/how-to-measure-the-characteristic-impedance-of-coaxial-cable-using-nanovna\/","url":"https:\/\/johnsonfrancis.org\/techworld\/how-to-measure-the-characteristic-impedance-of-coaxial-cable-using-nanovna\/","name":"How to measure the characteristic impedance of coaxial cable using NanoVNA? - Johnson&#039;s Techworld","isPartOf":{"@id":"https:\/\/johnsonfrancis.org\/techworld\/#website"},"primaryImageOfPage":{"@id":"https:\/\/johnsonfrancis.org\/techworld\/how-to-measure-the-characteristic-impedance-of-coaxial-cable-using-nanovna\/#primaryimage"},"image":{"@id":"https:\/\/johnsonfrancis.org\/techworld\/how-to-measure-the-characteristic-impedance-of-coaxial-cable-using-nanovna\/#primaryimage"},"thumbnailUrl":"https:\/\/johnsonfrancis.org\/techworld\/wp-content\/uploads\/2025\/03\/How-to-measure-the-characteristic-impedance-of-coaxial-cable-using-NanoVNA.jpg","datePublished":"2025-03-22T03:15:51+00:00","dateModified":"2025-03-22T06:08:09+00:00","breadcrumb":{"@id":"https:\/\/johnsonfrancis.org\/techworld\/how-to-measure-the-characteristic-impedance-of-coaxial-cable-using-nanovna\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/johnsonfrancis.org\/techworld\/how-to-measure-the-characteristic-impedance-of-coaxial-cable-using-nanovna\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/johnsonfrancis.org\/techworld\/how-to-measure-the-characteristic-impedance-of-coaxial-cable-using-nanovna\/#primaryimage","url":"https:\/\/johnsonfrancis.org\/techworld\/wp-content\/uploads\/2025\/03\/How-to-measure-the-characteristic-impedance-of-coaxial-cable-using-NanoVNA.jpg","contentUrl":"https:\/\/johnsonfrancis.org\/techworld\/wp-content\/uploads\/2025\/03\/How-to-measure-the-characteristic-impedance-of-coaxial-cable-using-NanoVNA.jpg","width":1200,"height":676},{"@type":"BreadcrumbList","@id":"https:\/\/johnsonfrancis.org\/techworld\/how-to-measure-the-characteristic-impedance-of-coaxial-cable-using-nanovna\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/johnsonfrancis.org\/techworld\/"},{"@type":"ListItem","position":2,"name":"How to measure the characteristic impedance of coaxial cable using NanoVNA?"}]},{"@type":"WebSite","@id":"https:\/\/johnsonfrancis.org\/techworld\/#website","url":"https:\/\/johnsonfrancis.org\/techworld\/","name":"Johnson's Techworld","description":"Johnson&#039;s Techworld","publisher":{"@id":"https:\/\/johnsonfrancis.org\/techworld\/#\/schema\/person\/6201c843e80ccd3578e6196b1d007027"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/johnsonfrancis.org\/techworld\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":["Person","Organization"],"@id":"https:\/\/johnsonfrancis.org\/techworld\/#\/schema\/person\/6201c843e80ccd3578e6196b1d007027","name":"Johnson Francis","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/johnsonfrancis.org\/techworld\/wp-content\/uploads\/2025\/01\/channels4_profile.jpg","url":"https:\/\/johnsonfrancis.org\/techworld\/wp-content\/uploads\/2025\/01\/channels4_profile.jpg","contentUrl":"https:\/\/johnsonfrancis.org\/techworld\/wp-content\/uploads\/2025\/01\/channels4_profile.jpg","width":600,"height":600,"caption":"Johnson Francis"},"logo":{"@id":"https:\/\/johnsonfrancis.org\/techworld\/wp-content\/uploads\/2025\/01\/channels4_profile.jpg"},"description":"Amateur Radio Operator VU2JO. 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\/"}]}},"_links":{"self":[{"href":"https:\/\/johnsonfrancis.org\/techworld\/wp-json\/wp\/v2\/posts\/13573","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/johnsonfrancis.org\/techworld\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/johnsonfrancis.org\/techworld\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/johnsonfrancis.org\/techworld\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/johnsonfrancis.org\/techworld\/wp-json\/wp\/v2\/comments?post=13573"}],"version-history":[{"count":3,"href":"https:\/\/johnsonfrancis.org\/techworld\/wp-json\/wp\/v2\/posts\/13573\/revisions"}],"predecessor-version":[{"id":13577,"href":"https:\/\/johnsonfrancis.org\/techworld\/wp-json\/wp\/v2\/posts\/13573\/revisions\/13577"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/johnsonfrancis.org\/techworld\/wp-json\/wp\/v2\/media\/13575"}],"wp:attachment":[{"href":"https:\/\/johnsonfrancis.org\/techworld\/wp-json\/wp\/v2\/media?parent=13573"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/johnsonfrancis.org\/techworld\/wp-json\/wp\/v2\/categories?post=13573"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/johnsonfrancis.org\/techworld\/wp-json\/wp\/v2\/tags?post=13573"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}