{"id":746,"date":"2012-07-26T08:12:50","date_gmt":"2012-07-26T06:12:50","guid":{"rendered":"http:\/\/dh5ym.hopto.org\/wiki\/?p=746"},"modified":"2013-02-08T18:55:02","modified_gmt":"2013-02-08T18:55:02","slug":"tq2sa-relais-for-rf-switching","status":"publish","type":"post","link":"http:\/\/dh5ym.hopto.org\/wiki\/?p=746","title":{"rendered":"TQ2SA relais for RF switching"},"content":{"rendered":"<p>I tried a cheap TQ2SA SMD relais for RF switching. The circuit was using the 2 switches as one SPDT switch with the unused output connected to ground.<br \/>\nFind some pictures attached. For low power it should be possible to use the relais up to 70cm (ok, 30dB isolation only). On 2m and below it works with good results&#8230;<\/p>\n<div id=\"attachment_748\" style=\"width: 310px\" class=\"wp-caption aligncenter\"><a href=\"..\/wiki\/wp-content\/uploads\/2012\/07\/IMG027.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-748\" src=\"..\/wiki\/wp-content\/uploads\/2012\/07\/IMG027-300x225.jpg\" alt=\"relais side\" title=\"relais side\" width=\"300\" height=\"225\" class=\"size-medium wp-image-748\" srcset=\"http:\/\/dh5ym.hopto.org\/wiki\/wp-content\/uploads\/2012\/07\/IMG027-300x225.jpg 300w, http:\/\/dh5ym.hopto.org\/wiki\/wp-content\/uploads\/2012\/07\/IMG027-1024x768.jpg 1024w, http:\/\/dh5ym.hopto.org\/wiki\/wp-content\/uploads\/2012\/07\/IMG027-624x468.jpg 624w, http:\/\/dh5ym.hopto.org\/wiki\/wp-content\/uploads\/2012\/07\/IMG027.jpg 2048w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-748\" class=\"wp-caption-text\">relais side<\/p><\/div>\n<div id=\"attachment_749\" style=\"width: 310px\" class=\"wp-caption aligncenter\"><a href=\"..\/wiki\/wp-content\/uploads\/2012\/07\/IMG028.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-749\" src=\"..\/wiki\/wp-content\/uploads\/2012\/07\/IMG028-300x225.jpg\" alt=\"connector side\" title=\"connector side\" width=\"300\" height=\"225\" class=\"size-medium wp-image-749\" srcset=\"http:\/\/dh5ym.hopto.org\/wiki\/wp-content\/uploads\/2012\/07\/IMG028-300x225.jpg 300w, http:\/\/dh5ym.hopto.org\/wiki\/wp-content\/uploads\/2012\/07\/IMG028-1024x768.jpg 1024w, http:\/\/dh5ym.hopto.org\/wiki\/wp-content\/uploads\/2012\/07\/IMG028-624x468.jpg 624w, http:\/\/dh5ym.hopto.org\/wiki\/wp-content\/uploads\/2012\/07\/IMG028.jpg 2048w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-749\" class=\"wp-caption-text\">connector side<\/p><\/div>\n<div id=\"attachment_750\" style=\"width: 310px\" class=\"wp-caption aligncenter\"><a href=\"..\/wiki\/wp-content\/uploads\/2012\/07\/TQ2SA-5V_SPDT_insertion_loss.png\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-750\" src=\"..\/wiki\/wp-content\/uploads\/2012\/07\/TQ2SA-5V_SPDT_insertion_loss-300x218.png\" alt=\"TQ2SA-5V_SPDT_insertion_loss\" title=\"TQ2SA-5V_SPDT_insertion_loss\" width=\"300\" height=\"218\" class=\"size-medium wp-image-750\" srcset=\"http:\/\/dh5ym.hopto.org\/wiki\/wp-content\/uploads\/2012\/07\/TQ2SA-5V_SPDT_insertion_loss-300x218.png 300w, http:\/\/dh5ym.hopto.org\/wiki\/wp-content\/uploads\/2012\/07\/TQ2SA-5V_SPDT_insertion_loss-624x455.png 624w, http:\/\/dh5ym.hopto.org\/wiki\/wp-content\/uploads\/2012\/07\/TQ2SA-5V_SPDT_insertion_loss.png 632w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-750\" class=\"wp-caption-text\">TQ2SA-5V_SPDT_insertion_loss<\/p><\/div>\n<div id=\"attachment_751\" style=\"width: 310px\" class=\"wp-caption aligncenter\"><a href=\"..\/wiki\/wp-content\/uploads\/2012\/07\/TQ2SA-5V_SPDT_short_crosscoupling.png\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-751\" src=\"..\/wiki\/wp-content\/uploads\/2012\/07\/TQ2SA-5V_SPDT_short_crosscoupling-300x218.png\" alt=\"TQ2SA-5V_SPDT_short_crosscoupling\" title=\"TQ2SA-5V_SPDT_short_crosscoupling\" width=\"300\" height=\"218\" class=\"size-medium wp-image-751\" srcset=\"http:\/\/dh5ym.hopto.org\/wiki\/wp-content\/uploads\/2012\/07\/TQ2SA-5V_SPDT_short_crosscoupling-300x218.png 300w, http:\/\/dh5ym.hopto.org\/wiki\/wp-content\/uploads\/2012\/07\/TQ2SA-5V_SPDT_short_crosscoupling-624x455.png 624w, http:\/\/dh5ym.hopto.org\/wiki\/wp-content\/uploads\/2012\/07\/TQ2SA-5V_SPDT_short_crosscoupling.png 632w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-751\" class=\"wp-caption-text\">TQ2SA-5V_SPDT_short_crosscoupling<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"<p>I tried a cheap TQ2SA SMD relais for RF switching. The circuit was using the 2 switches as one SPDT switch with the unused output connected to ground. Find some pictures attached. For low power it should be possible to &hellip; <a href=\"http:\/\/dh5ym.hopto.org\/wiki\/?p=746\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2,10],"tags":[],"class_list":["post-746","post","type-post","status-publish","format-standard","hentry","category-amateur-radio","category-measurement"],"_links":{"self":[{"href":"http:\/\/dh5ym.hopto.org\/wiki\/index.php?rest_route=\/wp\/v2\/posts\/746","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/dh5ym.hopto.org\/wiki\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/dh5ym.hopto.org\/wiki\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/dh5ym.hopto.org\/wiki\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/dh5ym.hopto.org\/wiki\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=746"}],"version-history":[{"count":2,"href":"http:\/\/dh5ym.hopto.org\/wiki\/index.php?rest_route=\/wp\/v2\/posts\/746\/revisions"}],"predecessor-version":[{"id":875,"href":"http:\/\/dh5ym.hopto.org\/wiki\/index.php?rest_route=\/wp\/v2\/posts\/746\/revisions\/875"}],"wp:attachment":[{"href":"http:\/\/dh5ym.hopto.org\/wiki\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=746"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/dh5ym.hopto.org\/wiki\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=746"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/dh5ym.hopto.org\/wiki\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=746"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}