{"id":31,"date":"2014-03-11T23:42:53","date_gmt":"2014-03-11T23:42:53","guid":{"rendered":"http:\/\/n2xu.wordpress.com\/?p=31"},"modified":"2024-07-31T02:00:32","modified_gmt":"2024-07-31T02:00:32","slug":"rf-in-the-shack","status":"publish","type":"post","link":"https:\/\/n2xu.net\/index.php\/2014\/03\/11\/rf-in-the-shack\/","title":{"rendered":"RF In The Shack!"},"content":{"rendered":"<p>My development environment consists of two RasPi computers each with a TNC-Pi mounted on it.  I made 3 ft interface cables to connect the TNC-Pi to Baofeng UV-5RA radios.  The radios are WAY TOO CLOSE to the RasPi.  Attempts to do TCP\/IP across the RF link fail miserably.<\/p>\n<p>Initially I thought my software wasn&#8217;t configured correctly, but set one RasPi up to ping the other across the link at 5 second intervals and got 7 responses out of 145 sent.  Running &#8220;listen -cart&#8221; on the RasPi shows both systems are transmitting because I can see the ICMP\/AX25 packets. I think the RF is interfering with the RasPi&#8217;s ability to act on the received packets.<\/p>\n<p>ToDo:<br \/>\nBuild RF shielded enclosures for RasPi, build outside antenna to reduce RF into the RasPi. Build shielded interface cable between the RasPi and the transmitter.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>My development environment consists of two RasPi computers each with a TNC-Pi mounted on it. I made 3 ft interface cables to connect the TNC-Pi to Baofeng UV-5RA radios. The radios are WAY TOO CLOSE to the RasPi. Attempts to do TCP\/IP across the RF link fail miserably. Initially I thought my software wasn&#8217;t configured &#8230; <a title=\"RF In The Shack!\" class=\"read-more\" href=\"https:\/\/n2xu.net\/index.php\/2014\/03\/11\/rf-in-the-shack\/\" aria-label=\"Read more about RF In The Shack!\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14,13],"tags":[3,7],"class_list":["post-31","post","type-post","status-publish","format-standard","hentry","category-computer-stuff","category-ham-radio","tag-ham-radio","tag-raspberry-pi"],"_links":{"self":[{"href":"https:\/\/n2xu.net\/index.php\/wp-json\/wp\/v2\/posts\/31","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/n2xu.net\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/n2xu.net\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/n2xu.net\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/n2xu.net\/index.php\/wp-json\/wp\/v2\/comments?post=31"}],"version-history":[{"count":1,"href":"https:\/\/n2xu.net\/index.php\/wp-json\/wp\/v2\/posts\/31\/revisions"}],"predecessor-version":[{"id":142,"href":"https:\/\/n2xu.net\/index.php\/wp-json\/wp\/v2\/posts\/31\/revisions\/142"}],"wp:attachment":[{"href":"https:\/\/n2xu.net\/index.php\/wp-json\/wp\/v2\/media?parent=31"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/n2xu.net\/index.php\/wp-json\/wp\/v2\/categories?post=31"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/n2xu.net\/index.php\/wp-json\/wp\/v2\/tags?post=31"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}