{"id":6639,"date":"2018-09-24T21:02:55","date_gmt":"2018-09-25T02:02:55","guid":{"rendered":"http:\/\/w0ep.us\/OM\/?p=6639"},"modified":"2018-09-25T09:24:28","modified_gmt":"2018-09-25T14:24:28","slug":"w7pua-audio-frequency-vna","status":"publish","type":"post","link":"http:\/\/w0ep.us\/OM\/?p=6639","title":{"rendered":"W7PUA audio frequency VNA"},"content":{"rendered":"<p>[Saturday: 6 miles on Macintire Road; Sunday: 1 hour of rowboating; today: 3.4 miles]<\/p>\n<p>The May\/June 2018 issue of <a href=\"http:\/\/www.arrl.org\/this-month-in-qex\">QEX magazine<\/a> had an interesting construction project in it, an <a href=\"http:\/\/www.janbob.com\/electron\/AVNA1\/AVNA1.htm\">audio frequency vector network analyzer <\/a>based on an arduino-like platform and featuring a touch screen interface.\u00a0 Sounds cool.<\/p>\n<p>I got on to the <a href=\"https:\/\/groups.io\/g\/AVNA1\">mailing list for the project<\/a> and a guy was getting a circuit board batch made.\u00a0 I pitched in for one board.\u00a0 Then I ordered the parts and got the board all populated.\u00a0 Yesterday I got the arduino programming loaded.<\/p>\n<p>Now I am working on the enclosure. Today I found a plastic box and fashioned a light aluminum cover. I think I can hang the whole thing off of the cover.\u00a0 The only thing I will need to do to the box is drill a hole for the USB programming\/power cable.\u00a0 The next step is to do the layout of the cover.\u00a0 I will have the touch screen, three banana plug terminals and one BNC connector.\u00a0\u00a0 I have some salvaged &#8220;pin&#8221; connectors instead of the banana plug things.\u00a0 They are smaller.\u00a0 But I don&#8217;t know if the matching plug-in parts are readily available.<\/p>\n<p>Here you can see the board and the touch screen in operation and sitting on the enclosure I hope to use.<\/p>\n<p><a href=\"http:\/\/w0ep.us\/OM\/?attachment_id=6641\" rel=\"attachment wp-att-6641\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-medium wp-image-6641\" src=\"http:\/\/w0ep.us\/OM\/wp-content\/uploads\/2018\/09\/AudioVNA-700x525.jpg\" alt=\"\" width=\"700\" height=\"525\" srcset=\"http:\/\/w0ep.us\/OM\/wp-content\/uploads\/2018\/09\/AudioVNA-700x525.jpg 700w, http:\/\/w0ep.us\/OM\/wp-content\/uploads\/2018\/09\/AudioVNA-768x576.jpg 768w, http:\/\/w0ep.us\/OM\/wp-content\/uploads\/2018\/09\/AudioVNA-1024x768.jpg 1024w, http:\/\/w0ep.us\/OM\/wp-content\/uploads\/2018\/09\/AudioVNA.jpg 1099w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>[Saturday: 6 miles on Macintire Road; Sunday: 1 hour of rowboating; today: 3.4 miles] The May\/June 2018 issue of QEX magazine had an interesting construction project in it, an audio frequency vector network analyzer based on an arduino-like platform and featuring a touch screen interface.\u00a0 Sounds cool. I got on to the mailing list for [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-6639","post","type-post","status-publish","format-standard","hentry","category-ham-radio"],"_links":{"self":[{"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=\/wp\/v2\/posts\/6639","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=6639"}],"version-history":[{"count":5,"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=\/wp\/v2\/posts\/6639\/revisions"}],"predecessor-version":[{"id":6645,"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=\/wp\/v2\/posts\/6639\/revisions\/6645"}],"wp:attachment":[{"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6639"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6639"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6639"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}