{"id":63,"date":"2015-02-03T20:20:47","date_gmt":"2015-02-03T19:20:47","guid":{"rendered":"https:\/\/pa3csg.nl\/?page_id=63"},"modified":"2019-01-11T12:44:32","modified_gmt":"2019-01-11T11:44:32","slug":"50-mhz-bandpass-filter","status":"publish","type":"page","link":"https:\/\/pa3csg.nl\/?page_id=63","title":{"rendered":"50 MHz Bandpass filter"},"content":{"rendered":"<h1>50 MHz Bandpass filter<\/h1>\n<p>The last band for this filter was the 50 MHz band. With 6 turns inductor and a 22 pF capacitor it just didn\u2019t work. Increasing the turns to 7 made things work. Smaller capacitors would have been better but these were not available in my junk box. If you want to try 8 turns and 10 pF would be a nice try.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" class=\"alignnone wp-image-492 size-medium\" title=\"6m-helical-bp-inside\" src=\"https:\/\/pa3csg.nl\/wp-content\/uploads\/2016\/06\/6m-helical-bp-inside-300x277.jpg\" width=\"300\" height=\"277\" srcset=\"https:\/\/pa3csg.nl\/wp-content\/uploads\/2016\/06\/6m-helical-bp-inside-300x277.jpg 300w, https:\/\/pa3csg.nl\/wp-content\/uploads\/2016\/06\/6m-helical-bp-inside.jpg 500w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n<p>The following plot. Vertical 10dB per division horizontal 4 MHz per division.<\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/pa3csg.nl\/wp-content\/uploads\/2016\/06\/6m-helical-bp-plot.jpg\" data-rel=\"lightbox-image-0\" data-rl_title=\"\" data-rl_caption=\"\"><img loading=\"lazy\" class=\"alignnone wp-image-493 size-full\" title=\"\" src=\"https:\/\/pa3csg.nl\/wp-content\/uploads\/2016\/06\/6m-helical-bp-plot.jpg\" width=\"500\" height=\"454\" srcset=\"https:\/\/pa3csg.nl\/wp-content\/uploads\/2016\/06\/6m-helical-bp-plot.jpg 500w, https:\/\/pa3csg.nl\/wp-content\/uploads\/2016\/06\/6m-helical-bp-plot-300x272.jpg 300w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/a><\/p>\n<p>If you want to read the original article, please click <a href=\"https:\/\/pa3csg.nl\/?page_id=61\" target=\"_self\">HERE<\/a><\/p>\n<p>A 70 MHz version can be found <a href=\"https:\/\/pa3csg.nl\/?page_id=62\" target=\"_self\">HERE<\/a><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<div class=\"mh-excerpt\"><p>50 MHz Bandpass filter The last band for this filter was the 50 MHz band. With 6 turns inductor and a 22 pF capacitor it <a class=\"mh-excerpt-more\" href=\"https:\/\/pa3csg.nl\/?page_id=63\" title=\"50 MHz Bandpass filter\">[&#8230;]<\/a><\/p>\n<\/div>","protected":false},"author":1,"featured_media":496,"parent":0,"menu_order":3,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"categories":[38,16],"tags":[],"_links":{"self":[{"href":"https:\/\/pa3csg.nl\/index.php?rest_route=\/wp\/v2\/pages\/63"}],"collection":[{"href":"https:\/\/pa3csg.nl\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/pa3csg.nl\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/pa3csg.nl\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/pa3csg.nl\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=63"}],"version-history":[{"count":6,"href":"https:\/\/pa3csg.nl\/index.php?rest_route=\/wp\/v2\/pages\/63\/revisions"}],"predecessor-version":[{"id":1392,"href":"https:\/\/pa3csg.nl\/index.php?rest_route=\/wp\/v2\/pages\/63\/revisions\/1392"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pa3csg.nl\/index.php?rest_route=\/wp\/v2\/media\/496"}],"wp:attachment":[{"href":"https:\/\/pa3csg.nl\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=63"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/pa3csg.nl\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=63"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/pa3csg.nl\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=63"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}