{"id":123,"date":"2013-08-05T12:30:51","date_gmt":"2013-08-05T11:30:51","guid":{"rendered":"http:\/\/www.eb3frn.net\/?p=123"},"modified":"2013-08-05T12:30:51","modified_gmt":"2013-08-05T11:30:51","slug":"retuning-the-dmc-dro-locked-oscillator-to-use-as-lo-in-24ghz","status":"publish","type":"post","link":"https:\/\/www.eb3frn.net\/?p=123","title":{"rendered":"Retuning the DMC DRO locked oscillator to use as LO in 24GHz"},"content":{"rendered":"

Now I’ m looking retune the DRO locked oscillator modules to 23616MHz to get a IF of 432Mhz at 24048MHz. To get 23616MHz I can use 98.4MHz (x240) and 105.42857MHz (x224). As I have a xtal of 105.43857Mhz I wish use the same in the two units, but have in one unit dosen’t works.
\nThe unit that originally have a xtal of 99.04MHz dont accepts xtals more high than 100Mhz, and the units that originally have a xtal of 105.99MHz dont accepto xtals of less of 100Mhz. Comparing the units, looks that the issue is in the wire inductors located near of the xtal.<\/p>\n

\"DMC<\/a>

DMC DRO locked oscillators opened<\/p><\/div>\n

\"DMC<\/a>

DMC DRO locked oscillators<\/p><\/div>\n

 <\/p>\n

To check the reference inside of the unit exists a SMA located in the upper right that gives the ref freq x4. After modify the coils now and retuning the filter located in the bottom right , the unit that only accepts xtals up to 100MHz locked now can be used with the 105.43857MHz xtal.<\/p>\n

\"DMC<\/a>

DMC DRO locked oscillator test<\/p><\/div>\n

\"DMC<\/a>

DMC DRO locked oscillator xtal<\/p><\/div>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

Now I’ m looking retune the DRO locked oscillator modules to 23616MHz to get a IF of 432Mhz at 24048MHz. To get 23616MHz I can use 98.4MHz (x240) and 105.42857MHz (x224). As I have a xtal of 105.43857Mhz I wish use the same in the two units, but have in one unit dosen’t works. The […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":"","jetpack_publicize_message":"","jetpack_is_tweetstorm":false,"jetpack_publicize_feature_enabled":true},"categories":[1,4],"tags":[13],"jetpack_featured_media_url":"","jetpack_publicize_connections":[],"jetpack_shortlink":"https:\/\/wp.me\/p31CYx-1Z","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.eb3frn.net\/index.php?rest_route=\/wp\/v2\/posts\/123"}],"collection":[{"href":"https:\/\/www.eb3frn.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.eb3frn.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.eb3frn.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.eb3frn.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=123"}],"version-history":[{"count":2,"href":"https:\/\/www.eb3frn.net\/index.php?rest_route=\/wp\/v2\/posts\/123\/revisions"}],"predecessor-version":[{"id":129,"href":"https:\/\/www.eb3frn.net\/index.php?rest_route=\/wp\/v2\/posts\/123\/revisions\/129"}],"wp:attachment":[{"href":"https:\/\/www.eb3frn.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=123"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.eb3frn.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=123"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.eb3frn.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=123"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}