{"id":1071,"date":"2017-11-12T21:22:54","date_gmt":"2017-11-12T20:22:54","guid":{"rendered":"http:\/\/www.sm0brf.se\/?p=1071"},"modified":"2017-11-13T22:27:57","modified_gmt":"2017-11-13T21:27:57","slug":"measuring-attenuation-of-dl1000-military-telephone-line","status":"publish","type":"post","link":"https:\/\/www.sm0brf.se\/?p=1071","title":{"rendered":"Measuring attenuation of DL1000 military telephone cable."},"content":{"rendered":"<p>I was using a 50m length of DL1000 telephone cable with a transformer with binocular BN73-202 at each end with a turn\u2019s ratio of 2:3. There was a MINI VNA Pro used in transmission mode connected to the transformers.<\/p>\n<p><a href=\"https:\/\/www.sm0brf.se\/wp-content\/uploads\/2017\/11\/DUT-Transmission-measurement-DL1000-001.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-1079 alignleft\" src=\"https:\/\/www.sm0brf.se\/wp-content\/uploads\/2017\/11\/DUT-Transmission-measurement-DL1000-001-300x205.jpg\" alt=\"\" width=\"300\" height=\"205\" srcset=\"https:\/\/www.sm0brf.se\/wp-content\/uploads\/2017\/11\/DUT-Transmission-measurement-DL1000-001-300x205.jpg 300w, https:\/\/www.sm0brf.se\/wp-content\/uploads\/2017\/11\/DUT-Transmission-measurement-DL1000-001-768x525.jpg 768w, https:\/\/www.sm0brf.se\/wp-content\/uploads\/2017\/11\/DUT-Transmission-measurement-DL1000-001-1024x700.jpg 1024w, https:\/\/www.sm0brf.se\/wp-content\/uploads\/2017\/11\/DUT-Transmission-measurement-DL1000-001-624x426.jpg 624w, https:\/\/www.sm0brf.se\/wp-content\/uploads\/2017\/11\/DUT-Transmission-measurement-DL1000-001.jpg 1452w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>Attenuation in the transformers:<\/p>\n<p><a href=\"https:\/\/www.sm0brf.se\/wp-content\/uploads\/2017\/11\/Tv\u00e5_gristrynen_trnansmf\u00f6rl.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-1075 alignnone\" src=\"https:\/\/www.sm0brf.se\/wp-content\/uploads\/2017\/11\/Tv\u00e5_gristrynen_trnansmf\u00f6rl-300x116.jpg\" alt=\"\" width=\"300\" height=\"116\" srcset=\"https:\/\/www.sm0brf.se\/wp-content\/uploads\/2017\/11\/Tv\u00e5_gristrynen_trnansmf\u00f6rl-300x116.jpg 300w, https:\/\/www.sm0brf.se\/wp-content\/uploads\/2017\/11\/Tv\u00e5_gristrynen_trnansmf\u00f6rl-768x298.jpg 768w, https:\/\/www.sm0brf.se\/wp-content\/uploads\/2017\/11\/Tv\u00e5_gristrynen_trnansmf\u00f6rl-1024x397.jpg 1024w, https:\/\/www.sm0brf.se\/wp-content\/uploads\/2017\/11\/Tv\u00e5_gristrynen_trnansmf\u00f6rl-624x242.jpg 624w, https:\/\/www.sm0brf.se\/wp-content\/uploads\/2017\/11\/Tv\u00e5_gristrynen_trnansmf\u00f6rl.jpg 1091w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p>Attenuation in transformers plus 50 m of DL1000 telephone cable:<\/p>\n<p><a href=\"https:\/\/www.sm0brf.se\/wp-content\/uploads\/2017\/11\/Tv\u00e5_gristrynen_trnansmf\u00f6rl_50m_DL1000_utrullad.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-1076\" src=\"https:\/\/www.sm0brf.se\/wp-content\/uploads\/2017\/11\/Tv\u00e5_gristrynen_trnansmf\u00f6rl_50m_DL1000_utrullad-300x137.jpg\" alt=\"\" width=\"300\" height=\"137\" srcset=\"https:\/\/www.sm0brf.se\/wp-content\/uploads\/2017\/11\/Tv\u00e5_gristrynen_trnansmf\u00f6rl_50m_DL1000_utrullad-300x137.jpg 300w, https:\/\/www.sm0brf.se\/wp-content\/uploads\/2017\/11\/Tv\u00e5_gristrynen_trnansmf\u00f6rl_50m_DL1000_utrullad-768x351.jpg 768w, https:\/\/www.sm0brf.se\/wp-content\/uploads\/2017\/11\/Tv\u00e5_gristrynen_trnansmf\u00f6rl_50m_DL1000_utrullad-1024x468.jpg 1024w, https:\/\/www.sm0brf.se\/wp-content\/uploads\/2017\/11\/Tv\u00e5_gristrynen_trnansmf\u00f6rl_50m_DL1000_utrullad-624x285.jpg 624w, https:\/\/www.sm0brf.se\/wp-content\/uploads\/2017\/11\/Tv\u00e5_gristrynen_trnansmf\u00f6rl_50m_DL1000_utrullad.jpg 1089w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>I was using a 50m length of DL1000 telephone cable with a transformer with binocular BN73-202 at each end with a turn\u2019s ratio of 2:3. There was a MINI VNA Pro used in transmission mode connected to the transformers. &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Attenuation in the transformers: &nbsp; Attenuation in transformers plus 50 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[24],"tags":[],"class_list":["post-1071","post","type-post","status-publish","format-standard","hentry","category-okategoriserade-en"],"_links":{"self":[{"href":"https:\/\/www.sm0brf.se\/index.php?rest_route=\/wp\/v2\/posts\/1071","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.sm0brf.se\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.sm0brf.se\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.sm0brf.se\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.sm0brf.se\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1071"}],"version-history":[{"count":5,"href":"https:\/\/www.sm0brf.se\/index.php?rest_route=\/wp\/v2\/posts\/1071\/revisions"}],"predecessor-version":[{"id":1094,"href":"https:\/\/www.sm0brf.se\/index.php?rest_route=\/wp\/v2\/posts\/1071\/revisions\/1094"}],"wp:attachment":[{"href":"https:\/\/www.sm0brf.se\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1071"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.sm0brf.se\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1071"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.sm0brf.se\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1071"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}