{"id":247,"date":"2014-06-09T10:54:17","date_gmt":"2014-06-09T09:54:17","guid":{"rendered":"http:\/\/www.eb3frn.net\/?p=247"},"modified":"2014-06-09T17:51:14","modified_gmt":"2014-06-09T16:51:14","slug":"confirmation-of-the-isee-3-detection-from-james-miller-g3ruh","status":"publish","type":"post","link":"https:\/\/www.eb3frn.net\/?p=247","title":{"rendered":"Confirmation of my ISEE-3 detection from James Miller G3RUH"},"content":{"rendered":"

Dear Iban,<\/p>\n

Thank you for the timestamp, qth etc, and the info about the Spectravue
\nheader format.<\/p>\n

I examined the file anyway and worked out that a “stereo” signal was I and Q,
\n16-bits each, LSB first.<\/p>\n

I confirm the signal as you found. \u00a0I averaged small and large numbers of
\nFFTs. \u00a0This showed that the signal strength varied, between approximately
\n11 to 16 dB-Hz. \u00a0The spacecraft is spinning at about 3 rpm, so this may be
\nthe reason.<\/p>\n

Attached is a typical plot from my my own software. \u00a0This is not the strongest
\nsignal display; the largest I found was a signal = -45.7 dB over the
\nnoisefloor = -53.8 dB, or SNR = 8.1 dB.<\/p>\n

With a bin bandwidth of 0.124 Hz, this equates to a CNR of 16.4 dB-Hz.<\/p>\n

Congratulations!<\/p>\n

73 de James G3RUH<\/p>\n

\"ISEE-3<\/a>

ISEE-3 signal processed by G3RUH<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"

Dear Iban, Thank you for the timestamp, qth etc, and the info about the Spectravue header format. I examined the file anyway and worked out that a “stereo” signal was I and Q, 16-bits each, LSB first. I confirm the signal as you found. \u00a0I averaged small and large numbers of FFTs. \u00a0This showed that […]<\/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":[8,1],"tags":[],"jetpack_featured_media_url":"","jetpack_publicize_connections":[],"jetpack_shortlink":"https:\/\/wp.me\/p31CYx-3Z","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.eb3frn.net\/index.php?rest_route=\/wp\/v2\/posts\/247"}],"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=247"}],"version-history":[{"count":2,"href":"https:\/\/www.eb3frn.net\/index.php?rest_route=\/wp\/v2\/posts\/247\/revisions"}],"predecessor-version":[{"id":253,"href":"https:\/\/www.eb3frn.net\/index.php?rest_route=\/wp\/v2\/posts\/247\/revisions\/253"}],"wp:attachment":[{"href":"https:\/\/www.eb3frn.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=247"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.eb3frn.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=247"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.eb3frn.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=247"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}