{"id":195,"date":"2014-01-21T09:10:11","date_gmt":"2014-01-21T09:10:11","guid":{"rendered":"http:\/\/sm0w.com\/?p=195"},"modified":"2014-01-21T09:10:11","modified_gmt":"2014-01-21T09:10:11","slug":"rxads-progress-1","status":"publish","type":"post","link":"http:\/\/sm0w.com\/?p=195","title":{"rendered":"RXADS progress #1"},"content":{"rendered":"<p>\n\tLast week I started building the new RX Antenna Distribution System. I don&#39;t own a good accurate inductance meter so I built a small probe with two alligator clips and a capacitor of known value that I hooked up to my Vector Network Analyzer. Placing a coil in between the alligator clips creates a LC parallel&nbsp;cirquit that displays it&#39;s resonant frequency in the VNA. Using the formula f=1\/2*pi*sqrt(LC) it&#39;s easy to calculate the L (inductance) value of the coil. Played around abit with that and started assembling and tuning the bandpass filter cards. Will probably give you the finished filter cuves in the next post.\n<\/p>\n<p>\n\tI also started assembling the Combiner card and Patch card of the system, now I ran out of components so I made an order of the remaining ones so hopefully next weekend I can continue the build.\n<\/p>\n<p>\n\tHere are som pics.\n<\/p>\n[Not a valid template]\n","protected":false},"excerpt":{"rendered":"<p>Last week I started building the new RX Antenna Distribution System. I don&#39;t own a good accurate inductance meter so [&#038;hellip<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[8,9,6,3],"tags":[],"_links":{"self":[{"href":"http:\/\/sm0w.com\/index.php?rest_route=\/wp\/v2\/posts\/195"}],"collection":[{"href":"http:\/\/sm0w.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/sm0w.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/sm0w.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/sm0w.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=195"}],"version-history":[{"count":1,"href":"http:\/\/sm0w.com\/index.php?rest_route=\/wp\/v2\/posts\/195\/revisions"}],"predecessor-version":[{"id":196,"href":"http:\/\/sm0w.com\/index.php?rest_route=\/wp\/v2\/posts\/195\/revisions\/196"}],"wp:attachment":[{"href":"http:\/\/sm0w.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=195"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/sm0w.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=195"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/sm0w.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=195"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}