{"id":700,"date":"2017-12-26T22:06:28","date_gmt":"2017-12-26T22:06:28","guid":{"rendered":"https:\/\/klubnl.pl\/wpr\/?p=700"},"modified":"2017-12-26T22:08:51","modified_gmt":"2017-12-26T22:08:51","slug":"pierwszy-odbior-sygnalu-8270hz-pomiedzy-kanada-a-polska","status":"publish","type":"post","link":"https:\/\/klubnl.pl\/wpr\/2017\/12\/26\/pierwszy-odbior-sygnalu-8270hz-pomiedzy-kanada-a-polska\/","title":{"rendered":"Pierwszy odbi\u00f3r sygna\u0142u 8270Hz pomi\u0119dzy Kanad\u0105 a Polsk\u0105"},"content":{"rendered":"

Joe VO1NA nadawa\u0142 21 grudnia 2017 na 8270.0075Hz. Uda\u0142o sie go pomy\u015blnie odebra\u0107 w Warszawie (Jacek\/SQ5BPF), odleg\u0142o\u015b\u0107 to oko\u0142o 5100km. Jest to pierwszy pomy\u015blny odbi\u00f3r transmisji na 8270Hz pomi\u0119dzy Kanad\u0105 a Polsk\u0105.<\/p>\n

<\/p>\n

Zastosowano transmisj\u0119 ebnaut z parametrami: 1 znak, kodowanie 16K21A, 8 bitowe CRC, 60s per symbol, start 21:00 UTC.<\/p>\n

Transmisja zosta\u0142a najpierw zdekodowana przez Paula Nicholsona z odbiornik\u00f3w udost\u0119pnianych za pomoca jego strony: http:\/\/abelian.org\/vlf\/<\/a><\/p>\n

Potem zdekodowa\u0142em to sam, co da\u0142o troch\u0119 lepszy sygna\u0142 (sygna\u0142 do strony Paula jest kompresowany stratnie za pomoc\u0105 vorbis). WYnik pracy dekodera (wiadomo\u015bc to „S”):<\/p>\n

found rank 0 ber 4.3382e-01 Eb\/N0 1.3 M -3.196489811e-01 [S<\/span>] ps [ 3 -150 -150 -150 -150]\r\ncarrier phase: -0.9 deg\r\ncarrier Eb\/N0: 2.0 dB\r\ncarrier Es\/N0: -17.78 dB\r\ncarrier S\/N: 9.57 dB in 30.6 uHz, -35.57 dB in 1Hz, -69.55 dB in 2.5kHz\r\nelapsed 50<\/pre>\n
Ten sygna\u0142 zosta\u0142 zdekodowany przez Paula z innych udost\u0119pnionych odbiornik\u00f3w (orginalny mail: https:\/\/klubnl.pl\/rsgb_lf_group-archives\/html\/rsgb_lf_group\/2017-12\/msg00290.html<\/a> ):<\/p>\n
Date: Fri, 22 Dec 2017 09:43:00 +0000\r\nFrom: Paul Nicholson <vlf0403@abelian.org>\r\nReply-To: rsgb_lf_group@blacksheep.org\r\nTo: rsgb_lf_group@blacksheep.org\r\nSubject: Re: LF: VLF NA Ebnaut\r\n\r\n\r\nVO1NA wrote:\r\n\r\n> 2100 utc tonight [21st], 16K21A, CRC-8, one character,\r\n> 544 symbols, 1 minute each, 8270.0075 Hz.\r\n\r\nTodmorden (3575 km)\r\n-------------------\r\n\r\nDecoded easily. Eb\/N0 +11.1 dB, S\/N -26.52 dB in 1Hz,\r\n-60.50 dB in 2.5kHz, rank 0, BER 32%, constant reference phase.\r\n\r\nGood quality signal, stable and strong - over 10dB to spare at\r\nthe decoder.\r\n\r\nBielefeld (4301.5 km DL4YHF)\r\n----------------------------\r\n\r\nDecoded easily. Eb\/N0 +4.7 dB, S\/N -32.91 dB in 1Hz,\r\n-66.89 dB in 2.5kHz, rank 0, BER 41%, constant reference phase.\r\n\r\nFirst Canada to Germany VLF decode, I think.\r\n\r\nPerhaps Stefan also decodes? Distance is slightly greater\r\nat 4419.8 km.\r\n\r\nWolf's receiver has been working very well the last few days.\r\nWonder if some improvement has been made?\r\n\r\nWarsaw (5096.6 km SQ5BPF)\r\n\r\n-------------------------\r\n\r\nDecoded easily. Eb\/N0 +1.0 dB, S\/N -36.58 dB in 1Hz,\r\n-70.56 dB in 2.5kHz, rank 5, BER 44%, constant reference phase.\r\n\r\nFirst Canada to Poland VLF decode.\r\n\r\nCumiana\r\n-------\r\n\r\nUnfortunately off line, timing problems, system being re-installed.\r\n\r\n--\r\n\r\nWhat a great result!\r\n\r\nWill send the decode off-list to confirm, but it is most unlikely to\r\nbe false given the strong signal and the same decode at three\r\nsites.\r\n\r\n--\r\nPaul Nicholson\r\n--<\/pre>\n","protected":false},"excerpt":{"rendered":"
Joe VO1NA nadawa\u0142 21 grudnia 2017 na 8270.0075Hz. Uda\u0142o sie go pomy\u015blnie odebra\u0107 w Warszawie (Jacek\/SQ5BPF), odleg\u0142o\u015b\u0107 to oko\u0142o 5100km. Jest to pierwszy pomy\u015blny odbi\u00f3r transmisji na 8270Hz pomi\u0119dzy Kanad\u0105 a Polsk\u0105.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[24,13,11,12,33],"class_list":["post-700","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-24","tag-ebnaut","tag-paul-nicholson","tag-vlf","tag-vo1na"],"translation":{"provider":"WPGlobus","version":"3.0.1","language":"pl","enabled_languages":["pl","en"],"languages":{"pl":{"title":true,"content":true,"excerpt":false},"en":{"title":true,"content":true,"excerpt":false}}},"_links":{"self":[{"href":"https:\/\/klubnl.pl\/wpr\/wp-json\/wp\/v2\/posts\/700","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/klubnl.pl\/wpr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/klubnl.pl\/wpr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/klubnl.pl\/wpr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/klubnl.pl\/wpr\/wp-json\/wp\/v2\/comments?post=700"}],"version-history":[{"count":3,"href":"https:\/\/klubnl.pl\/wpr\/wp-json\/wp\/v2\/posts\/700\/revisions"}],"predecessor-version":[{"id":702,"href":"https:\/\/klubnl.pl\/wpr\/wp-json\/wp\/v2\/posts\/700\/revisions\/702"}],"wp:attachment":[{"href":"https:\/\/klubnl.pl\/wpr\/wp-json\/wp\/v2\/media?parent=700"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/klubnl.pl\/wpr\/wp-json\/wp\/v2\/categories?post=700"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/klubnl.pl\/wpr\/wp-json\/wp\/v2\/tags?post=700"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}