{"id":15986,"date":"2025-11-28T12:09:23","date_gmt":"2025-11-28T06:39:23","guid":{"rendered":"https:\/\/johnsonfrancis.org\/techworld\/?p=15986"},"modified":"2025-11-28T12:09:25","modified_gmt":"2025-11-28T06:39:25","slug":"demo-of-7812-regulator-ic-and-433-mhz-remote-relay-for-antenna-switch","status":"publish","type":"post","link":"https:\/\/johnsonfrancis.org\/techworld\/demo-of-7812-regulator-ic-and-433-mhz-remote-relay-for-antenna-switch\/","title":{"rendered":"Demo of 7812 regulator IC and 433 MHz Remote Relay for Antenna Switch"},"content":{"rendered":"<iframe loading=\"lazy\" width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/DD4vGLRW3hc?si=z1sTU5ygPKd_n2JI\" 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\">Here I am checking the output of 7812 regulator IC after connecting two 9V batteries in series to the input. After that the output is being used to activate 433 MHz remote antenna switch which has normally open and normally closed ports. Aim is to use it for switching between 40m dipole which will go to the normally closed port and a 6m beam which is yet to be homebrewed, to the normally open port. Hoping to switch to 6m antenna when the band is open, which is a rarity.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Here I am checking the output of 7812 regulator IC after connecting two 9V batteries in series to the input. After that the output is being used to activate 433 MHz remote antenna switch which has normally open and normally closed ports. Aim is to use it for switching between 40m dipole which will go [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":15987,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-15986","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 v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Demo of 7812 regulator IC and 433 MHz Remote Relay for Antenna Switch - 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\/demo-of-7812-regulator-ic-and-433-mhz-remote-relay-for-antenna-switch\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Demo of 7812 regulator IC and 433 MHz Remote Relay for Antenna Switch - Johnson&#039;s Techworld\" \/>\n<meta property=\"og:description\" content=\"Here I am checking the output of 7812 regulator IC after connecting two 9V batteries in series to the input. After that the output is being used to activate 433 MHz remote antenna switch which has normally open and normally closed ports. 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