{"id":43,"date":"2012-02-17T09:15:11","date_gmt":"2012-02-17T08:15:11","guid":{"rendered":"https:\/\/pa3csg.nl\/?page_id=43"},"modified":"2018-02-07T11:02:46","modified_gmt":"2018-02-07T10:02:46","slug":"using-the-specan-as-a-dipmeter","status":"publish","type":"page","link":"https:\/\/pa3csg.nl\/?page_id=43","title":{"rendered":"Using the specan as a dipmeter"},"content":{"rendered":"

Using the spectrum analyser as a dipmeter<\/span><\/p>\n

For a long time I\u00a0 never had the need to have a dipmeter for HF and VHF. This changed in recent years with my activity on the lower bands.To see the resonance frequency of a LC or a coaxial trap I borrowed the dipmeter of my friend Jack PE1KXH. It did his job but in a way that resonances were not clearly visible. The “dips” were rather small. Jack remembered a way to use the spectrum analyser\u00a0 and the sweeper as a dipmeter. It was rather simple!<\/span><\/p>\n

\"foto0356-klein\"<\/p>\n

First one had to make a few coils on a BNC connector.<\/span><\/p>\n

\"foto0357-klein\"<\/p>\n

If the frequency coverage is OK you can use the same spectrum analyser \/ sweeper set-up. If you couple the inductors then you get a more or less straight line:\"foto0358-klein\"<\/span><\/p>\n

If you couple these inductors to a LC combination you get the following result: On the photo a LC parallel resonant on 7 MHz.
\n<\/span><\/p>\n

\"foto0359-klein\"<\/p>\n

Resulting in the following picture on the analyser
\n<\/span><\/p>\n

\"foto0360-klein\"<\/p>\n

The same but now for a coaxtrap for 80M made out of PTFE coax:<\/span><\/p>\n

\"foto0361-klein\"<\/p>\n

The result is much more precise than the rather old fashioned dipmeter.<\/span><\/p>\n

Good Luck!
\n<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

Using the spectrum analyser as a dipmeter For a long time I\u00a0 never had the need to have a dipmeter for HF and VHF. This […]<\/a><\/p>\n<\/div>","protected":false},"author":1,"featured_media":868,"parent":0,"menu_order":66,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"categories":[38,39,16],"tags":[],"_links":{"self":[{"href":"https:\/\/pa3csg.nl\/index.php?rest_route=\/wp\/v2\/pages\/43"}],"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=43"}],"version-history":[{"count":5,"href":"https:\/\/pa3csg.nl\/index.php?rest_route=\/wp\/v2\/pages\/43\/revisions"}],"predecessor-version":[{"id":1215,"href":"https:\/\/pa3csg.nl\/index.php?rest_route=\/wp\/v2\/pages\/43\/revisions\/1215"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pa3csg.nl\/index.php?rest_route=\/wp\/v2\/media\/868"}],"wp:attachment":[{"href":"https:\/\/pa3csg.nl\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=43"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/pa3csg.nl\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=43"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/pa3csg.nl\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=43"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}