{"id":32975,"date":"2019-10-31T21:50:01","date_gmt":"2019-10-31T18:50:01","guid":{"rendered":"https:\/\/prohoster.info\/blog\/chto-slyshno-v-radioefire-prinimaem-i-dekodiruem-naibolee-interesnye-signaly\/"},"modified":"2019-10-31T21:50:01","modified_gmt":"2019-10-31T18:50:01","slug":"chto-slyshno-v-radioefire-prinimaem-i-dekodiruem-naibolee-interesnye-signaly","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hr\/blog\/administrirovanie\/chto-slyshno-v-radioefire-prinimaem-i-dekodiruem-naibolee-interesnye-signaly","title":{"rendered":"\u0160to se \u010duje na radiju? Prijemamo i dekodiramo najzanimljivije signale","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Pozdrav, Habr.<\/p>\n<p>Ve\u0107 je 21. vek, pa bi se moglo re\u0107i da se podaci mogu prenositi u HD kvalitetu \u010dak i na Mars. Ipak, i dalje u radijskom eteru rade zanimljivi ure\u0111aji i mo\u017ee se \u010duti mnogo zanimljivih signala. <\/p>\n<p><img decoding=\"async\" alt=\"\u0160to se \u010duje na radiju? Prijemamo i dekodiramo najzanimljivije signale\" src=\"\/wp-content\/uploads\/2019\/05\/1caeba638c4b2a3aef22b7904889c6b2.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nNaravno, nerealno je razmotriti sve njih, poku\u0161ajmo izabrati najzanimljivije, one koje mo\u017eemo sami prijemati i dekodirati pomo\u0107u ra\u010dunara. Za prijem signala koristi\u0107emo holandski online prijemnik <noindex><a rel=\"nofollow\" href=\"http:\/\/websdr.ewi.utwente.nl:8901\/\">WebSDR<\/a><\/noindex>, dekoder MultiPSK i program Virtual Audio Cable.<br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<p>Radi lak\u0161eg pregleda, signal \u0107emo prikazati po rastu\u0107oj frekvenciji. Ne\u0107u razmatrati radiodifuzne stanice, to je dosadno i banalan\u2014 ljudi mogu sami slu\u0161ati Radio Kinu na AM. Pre\u0107i \u0107emo na zanimljivije signale.<\/p>\n<h2>Signali ta\u010dnog vremena<\/h2>\n<p>\nNa frekvenciji 77,5 kHz (domet dugih talas) prenose se signali ta\u010dnog vremena nema\u010dke stanice DCF77. O njima je ve\u0107 bilo <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/445470\/\">odvojeni \u010dlanak<\/a><\/noindex>, pa samo ukratko ponavljam da je to jednostavan signal u amplitudnoj modulaciji \u2014 razli\u010ditim du\u017einama kodiraju se \u201e1\u201c i \u201e0\u201c, pa se za minut prima 58-bitni kod.<br \/>\n<img decoding=\"async\" alt=\"\u0160to se \u010duje na radiju? Prijemamo i dekodiramo najzanimljivije signale\" src=\"\/wp-content\/uploads\/2019\/05\/a6489e131a5b2366a3e6cb15f53a5ebb.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h2>130-140 kHz \u2014 telemetrija elektroenergetskih mre\u017ea<\/h2>\n<p>\nNa ovim frekvencijama, ako verujete <noindex><a rel=\"nofollow\" href=\"http:\/\/www.radioscanner.ru\/base\/freq16693.html\">sajtu radioscanner<\/a><\/noindex>, prenose se signali upravljanja elektroenergetskim mre\u017eama Nema\u010dke. <br \/>\n<img decoding=\"async\" alt=\"\u0160to se \u010duje na radiju? Prijemamo i dekodiramo najzanimljivije signale\" src=\"\/wp-content\/uploads\/2019\/05\/239c377386035313353e50f4cf936496.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nSignal je prili\u010dno jak, i po izve\u0161tajima, prima se \u010dak i u Australiji. Mo\u017ee se dekodirati u MultiPSK, ako se postave parametri, kao \u0161to je prikazano na snimku.<br \/>\n<img decoding=\"async\" alt=\"\u0160to se \u010duje na radiju? Prijemamo i dekodiramo najzanimljivije signale\" src=\"\/wp-content\/uploads\/2019\/05\/49519f1d6dd6d303b8a656e72086c066.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nNa izlazu dobijamo pakete podataka, \u010dija je struktura, naravno, nepoznata, zainteresovani mogu eksperimentisati i analizirati u slobodno vreme. Tehni\u010dki, sam signal je veoma jednostavan, metod se zove FSK (Frequency Shift Keying) i sastoji se u formiranju bitne sekvence promenom frekvencije prenosa. Taj isti signal, u obliku spektra \u2014 bitove se mo\u017ee prebrojati \u010dak i ru\u010dno.<br \/>\n<img decoding=\"async\" alt=\"\u0160to se \u010duje na radiju? Prijemamo i dekodiramo najzanimljivije signale\" src=\"\/wp-content\/uploads\/2019\/05\/7bc121c43226b3cc39176aee29a32194.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h2>Meteoteleks<\/h2>\n<p>\nNa gornjem spektru, sasvim blizu, na frekvenciji 147 kHz vidi se jo\u0161 jedan signal. To je (tako\u0111e nema\u010dka) stanica DWD (Deutscher Wetterdienst), koja prenosi vremenske izve\u0161taje za brodove. Pored ove frekvencije, signali se tako\u0111e prenose na 11039 i 14467 kHz. <\/p>\n<p>Rezultat dekodiranja prikazan je na snimku.<br \/>\n<img decoding=\"async\" alt=\"\u0160to se \u010duje na radiju? Prijemamo i dekodiramo najzanimljivije signale\" src=\"\/wp-content\/uploads\/2019\/05\/c49f6cfc0d611b055266d2c8b82439cb.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nNa\u010din kodiranja teleks sistema je isti, FSK, zanimljivo je ovde kodiranje teksta. Ono je 5-bitno, pomo\u0107u <noindex><a rel=\"nofollow\" href=\"https:\/\/en.wikipedia.org\/wiki\/Baudot_code\">koda Bodo<\/a><\/noindex>, i ima gotovo 100-godi\u0161nju povijest.<br \/>\n<img decoding=\"async\" alt=\"\u0160to se \u010duje na radiju? Prijemamo i dekodiramo najzanimljivije signale\" src=\"\/wp-content\/uploads\/2019\/05\/47b18d5121326a7db9cadab8cdd96dc4.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nNaizgled sli\u010dan kod kori\u0161ten je i na perforiranim trakama, dok se teleprinteri koriste od 60-ih godina pro\u0161log stolje\u0107a, a kao \u0161to se mo\u017ee vidjeti, i dalje rade. Naravno, na pravom brodu signal se ne dekodira putem ra\u010dunala \u2014 postoje specijalni prijemnici koji snimaju signal i prikazuju ga na ekranu. <br \/>\n<img decoding=\"async\" alt=\"\u0160to se \u010duje na radiju? Prijemamo i dekodiramo najzanimljivije signale\" src=\"\/wp-content\/uploads\/2019\/05\/ac8cbd2aac87725736e3999abf7bd4e5.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nU svakom slu\u010daju, \u010dak i uz satelitsku komunikaciju i Internet, prijenos podataka na ovaj na\u010din i dalje ostaje jednostavno, pouzdano i jeftino sredstvo. Iako, naravno, mogu\u0107e je pretpostaviti da \u0107e jednom i ovi sustavi oti\u0107i u povijest i biti zamijenjeni potpuno digitalnim servisima. Stoga, onima koji \u017eele primiti takav signal, ne bi trebalo previ\u0161e odugovla\u010diti. <\/p>\n<h2>Meteofax<\/h2>\n<p>\nJo\u0161 jedan legacy signal otprilike s gotovo istom dugom povijesti. U ovom signalu slika se prenosi u <i>analognom obliku<\/i> brzinom od 120 linija u minuti (imaju i druge vrijednosti, poput 60 ili 240 LPM), a za kodiranje svjetline koristi se frekvencijska modulacija \u2014 svjetlina svake to\u010dke slike proporcionalna je promjeni frekvencije. Ova jednostavna shema omogu\u0107ila je prijenos slika u vremenima kada se o \"digitalnim signalima\" malo toga znalo.<\/p>\n<p>Popularna u europskom dijelu i pogodna za prijem je ve\u0107 spomenuta njema\u010dka stanica DWD (Deutche Wetterdienst), koja \u0161alje poruke na frekvencijama 3855, 7880 i 13882 kHz. Druga organizacija \u010dije je faksove lako primiti je britanski Joint Operational Meteorology and Oceanography Centre, koji \u0161alje signale na frekvencijama 2618, 4610, 6834, 8040, 11086, 12390 i 18261 kHz.<\/p>\n<p>Za prijem HF Fax signala treba koristiti USB prijemni\u010dki na\u010din, a za dekodiranje se mo\u017ee koristiti MultiPSK. Rezultat prijema putem websdr prijemnika prikazan je na slici:<br \/>\n<img decoding=\"async\" alt=\"\u0160to se \u010duje na radiju? Prijemamo i dekodiramo najzanimljivije signale\" src=\"\/wp-content\/uploads\/2019\/05\/278b57dddf9874a61f7ed4eeae82126f.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nOva slika je primljena dok sam pisao tekst. Vidljivo je da su vertikalne linije pomaknute \u2014 protokol je analogan, a to\u010dnost sinkronizacije je ovdje kriti\u010dna, \u010dak i male ka\u0161njenja zvuka uzrokuju pomak slike. Kada se koristi \"stvarni\" prijemnik, takav efekt ne\u0107e postojati.<\/p>\n<p>Naravno, kao i u slu\u010daju meteoteleprinta, na plovilima nitko ne dekodira fakseve putem ra\u010dunala \u2014 postoje specijalizirani prijemnici (primjer slike s po\u010detka \u010dlanka) koji obavljaju sav posao automatski.<\/p>\n<h2>STANAG 4285<\/h2>\n<p>\nSada \u0107emo razmotriti moderniji standard prijenosa podataka na kratkim valovima \u2014 modem Stanag 4285. Ovaj format je razvijen za NATO i postoji u razli\u010ditim varijantama. Osnova se zasniva na faznoj modulaciji, parametri signala mogu varirati, kao \u0161to se mo\u017ee vidjeti u tablici, brzina se mo\u017ee kretati od 75 do 2400 bit\/s. To se mo\u017ee \u010diniti malo, ali uzimaju\u0107i u obzir prijenosno okru\u017eenje \u2014 kratke valove, s njihovim zastojevima i smetnjama, to je sasvim dobar rezultat.<br \/>\n<img decoding=\"async\" alt=\"\u0160to se \u010duje na radiju? Prijemamo i dekodiramo najzanimljivije signale\" src=\"\/wp-content\/uploads\/2019\/05\/74a25e98f7bb3630ce8f7c95b7083c4f.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nProgram MultiPSK mo\u017ee dekodirati STANAG, ali u 95% slu\u010dajeva rezultat dekodiranja bit \u0107e samo 'sme\u0107e' \u2014 sam format pru\u017ea samo bitni protokol ni\u017ee razine, dok su podaci zapravo mogu biti \u0161ifrirani ili imati neki svoj format. Neki signali se, me\u0111utim, mogu dekodirati, na primjer, ispod navedeni zapis na frekvenciji 8453 kHz. Nije mi uspjelo dekodirati neki signal putem websdr prijemnika, o\u010dito online prijenos naru\u0161ava strukturu podataka. Oni koji \u017eele mogu preuzeti datoteku s pravog prijemnika putem linka. <noindex><a rel=\"nofollow\" href=\"https:\/\/cloud.mail.ru\/public\/JRZs\/gH581X71s\">cloud.mail.ru\/public\/JRZs\/gH581X71s<\/a><\/noindex>. Rezultati dekodiranja u MultiPSK prikazani su na donjoj slici. Kao \u0161to se mo\u017ee vidjeti, brzina za ovaj zapis iznosi 600 bps, a sadr\u017ei se o\u010dito, tekstualna datoteka.<br \/>\n<img decoding=\"async\" alt=\"\u0160to se \u010duje na radiju? Prijemamo i dekodiramo najzanimljivije signale\" src=\"\/wp-content\/uploads\/2019\/05\/761ebe9eb3668e0e5bb34336e619ac43.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nZanimljivo je da, kao \u0161to se mo\u017ee vidjeti na panorami, takvih signala u eteru zaista ima vrlo mnogo:<br \/>\n<img decoding=\"async\" alt=\"\u0160to se \u010duje na radiju? Prijemamo i dekodiramo najzanimljivije signale\" src=\"\/wp-content\/uploads\/2019\/05\/68880118c94f1e494f3d664ebde165b6.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nNaravno, ne pripadaju svi od njih nu\u017eno STANAG-u \u2014 na sli\u010dnim principima postoje i drugi protokoli. Kao primjer, mo\u017ee se navesti analiza signala <noindex><a rel=\"nofollow\" href=\"http:\/\/i56578-swl.blogspot.com\/2017\/06\/stanag-4539-in-multichannel-mode-thales.html\">Thales HF Modem<\/a><\/noindex>. <\/p>\n<p>Kao u slu\u010daju drugih razmatranih signala, za stvarno primanje i prijenos koriste se specijalizirani ure\u0111aji. Na primjer, za modem prikazan na fotografiji <noindex><a rel=\"nofollow\" href=\"http:\/\/nsgdata.com\/fredelec\/products\/4539.pdf\">NSGDatacom 4539<\/a><\/noindex> navodi brzinu od 75 do 9600 bps uz \u0161irinu signala od 3 kHz.<br \/>\n<img decoding=\"async\" alt=\"\u0160to se \u010duje na radiju? Prijemamo i dekodiramo najzanimljivije signale\" src=\"\/wp-content\/uploads\/2019\/05\/33d24be4253248865f7ac2ee77e42f7d.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nBrzina od 9600, naravno, ne izgleda previ\u0161e impresivno, ali s obzirom na to da se signali mogu prenositi \u010dak i iz d\u017eungle ili s broda u oceanu, a pritom ni\u0161ta ne pla\u0107aju\u0107i operateru za promet, to nije lo\u0161e.<\/p>\n<p>Pogledajmo sada pa\u017eljivije panoramu iznad. Slijeva vidimo... to\u010dno, staru dobru Morseovu azbuku. Dakle, prelazimo na sljede\u0107i signal.<\/p>\n<h2>Morseov kod (CW)<\/h2>\n<p>\nNa frekvenciji 8423KHz \u010dujemo upravo njega. Umije\u0107e slu\u0161anja Morseove abecede danas je gotovo izgubljeno, stoga \u0107emo koristiti MultiPSK (iako, decodea nije ba\u0161 najbolje, CW Skimmer se puno bolje snalazi).<br \/>\n<img decoding=\"async\" alt=\"\u0160to se \u010duje na radiju? Prijemamo i dekodiramo najzanimljivije signale\" src=\"\/wp-content\/uploads\/2019\/05\/4c4d7ee062d5972cf0ce2e8e8e602e81.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nKao \u0161to mo\u017eemo vidjeti, \u0161alje se ponavljaju\u0107i tekst DE SVO, ako je vjerovati <noindex><a rel=\"nofollow\" href=\"http:\/\/www.radioscanner.ru\/base\/freq391.html\">sajtu radioscanner<\/a><\/noindex>, postaja se nalazi u Gr\u010dkoj. <\/p>\n<p>Naravno, takvih signala je ve\u0107 malo, ali ih jo\u0161 ima. Kao primjer, mo\u017ee se navesti dugo aktivna postaja na 4331KHz, koja \u0161alje ponavljaju\u0107e signale \u201cVVV DE E4X4XZ\u201d. Kako ka\u017ee Google, postaja pripada izraelskoj mornarici. \u0160alje li se na ovoj frekvenciji ne\u0161to drugo? Odgovor je nepoznat, oni koji \u017eele mogu slu\u0161ati i provjeriti sami. <\/p>\n<h2>The Buzzer (\u0423\u0412\u0411-76)<\/h2>\n<p>\nNa\u0161 izbor zavr\u0161ava sa vjerojatno najpoznatijim signalom \u2014 poznatim i u Rusiji i izvan nje, signalom na frekvenciji 4625KHz. <br \/>\n<img decoding=\"async\" alt=\"\u0160to se \u010duje na radiju? Prijemamo i dekodiramo najzanimljivije signale\" src=\"\/wp-content\/uploads\/2019\/05\/8b3545e5097368148063e95ca63dbbd0.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nSignal se koristi za obavje\u0161tavanje vojske i predstavlja ponavljaju\u0107e tonove, izme\u0111u kojih se ponekad prenose kodne fraze iz \u0161ifrirane biljeznice (apstraktne rije\u010di poput \u201eKROLIST\u201c ili \u201eBRAMIRKA\u201c). Neki tvrde da su vidjeli takve prijemnike u vojnim uredima, drugi ka\u017eu da je to dio sustava \u201emrtva ruka\u201c, uop\u0107e, signal je meka za obo\u017eavatelje Stalkera, teorija zavjere, \u201ehladne rata\u201c i jo\u0161 mnogo toga. Oni koji \u017eele mogu potra\u017eiti \u201e\u0423\u0412\u0411-76\u201c, i uvjeren sam, zanimljivo \u0161tivo za ve\u010der je zagarantirano (iako, ne treba se ozbiljno odnositi prema svemu napisanom). U isto vrijeme, sustav je dovoljno zanimljiv, barem zbog toga \u0161to radi jo\u0161 od vremena \u201ehladnog rata\u201c, iako je te\u0161ko re\u0107i treba li to nekome sada. <\/p>\n<h2>Zaklju\u010dak<\/h2>\n<p>\nOva lista daleko nije potpuna. Uz pomo\u0107 radio prijemnika mo\u017eete \u010duti (ili to\u010dnije, vidjeti) i signale komunikacije s podmornicama, i radare dugog dometa, i brzo promjenjive frequency hopping signale, i mnogo toga drugog. <\/p>\n<p>Evo primjera slike, snimljene upravo sada na frekvenciji 8MHz, na kojoj se mo\u017ee prebrojati minimalno 5 signala razli\u010ditih vrsta. <br \/>\n<img decoding=\"async\" alt=\"\u0160to se \u010duje na radiju? Prijemamo i dekodiramo najzanimljivije signale\" src=\"\/wp-content\/uploads\/2019\/05\/e9b9b91070293f10597928aec4300d31.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\n\u0160to oni predstavljaju \u2014 \u010desto nije poznato, barem se u otvorenim izvorima ne mo\u017ee na\u0107i sve (iako postoje takve stranice kao <noindex><a rel=\"nofollow\" href=\"https:\/\/www.sigidwiki.com\/wiki\/Signal_Identification_Guide\">www.sigidwiki.com\/wiki\/Signal_Identification_Guide<\/a><\/noindex> i <noindex><a rel=\"nofollow\" href=\"http:\/\/www.radioscanner.ru\/base\/\">www.radioscanner.ru\/base<\/a><\/noindex>). Istra\u017eivanje takvih signala je zanimljivo kako s matemati\u010dkog, programerskog i SOZ aspekta, tako i kao na\u010din za saznati ne\u0161to novo o okoli\u0161u.<\/p>\n<p>Zanimljivo je i to da, unato\u010d razvoju Interneta i komunikacija, radio ne samo da ne gubi na va\u017enosti, nego naprotiv \u2014 mogu\u0107nost prijenosa podataka izravno od po\u0161iljatelja do primatelja, bez cenzure, kontrole prometa i pra\u0107enja paketa, mogla bi ponovno postati (iako se nadamo da to ne\u0107e biti slu\u010daj) aktualna\u2026<br \/>\n<br \/>Izvor: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/450534\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u0440\u0438\u0432\u0435\u0442 \u0425\u0430\u0431\u0440. \u041d\u0430 \u0434\u0432\u043e\u0440\u0435 \u0443\u0436\u0435 21\u0439 \u0432\u0435\u043a, \u0438 \u043a\u0430\u0437\u0430\u043b\u043e\u0441\u044c \u0431\u044b, \u043f\u0435\u0440\u0435\u0434\u0430\u0442\u044c \u0434\u0430\u043d\u043d\u044b\u0435 \u043c\u043e\u0436\u043d\u043e \u0432 HD-\u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0435 \u0434\u0430\u0436\u0435 \u043d\u0430 \u041c\u0430\u0440\u0441. \u041e\u0434\u043d\u0430\u043a\u043e, \u0434\u043e \u0441\u0438\u0445 \u043f\u043e\u0440 \u0432 \u0440\u0430\u0434\u0438\u043e\u044d\u0444\u0438\u0440\u0435 \u0440\u0430\u0431\u043e\u0442\u0430\u0435\u0442 \u043d\u0435\u043c\u0430\u043b\u043e \u0438\u043d\u0442\u0435\u0440\u0435\u0441\u043d\u044b\u0445 \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432 \u0438 \u043c\u043e\u0436\u043d\u043e \u0443\u0441\u043b\u044b\u0448\u0430\u0442\u044c \u043d\u0435\u043c\u0430\u043b\u043e \u0438\u043d\u0442\u0435\u0440\u0435\u0441\u043d\u044b\u0445 \u0441\u0438\u0433\u043d\u0430\u043b\u043e\u0432. \u0412\u0441\u0435 \u0438\u0437 \u043d\u0438\u0445 \u0440\u0430\u0441\u0441\u043c\u043e\u0442\u0440\u0435\u0442\u044c \u0440\u0430\u0437\u0443\u043c\u0435\u0435\u0442\u0441\u044f, \u043d\u0435\u0440\u0435\u0430\u043b\u044c\u043d\u043e, \u043f\u043e\u043f\u0440\u043e\u0431\u0443\u0435\u043c \u0432\u044b\u0431\u0440\u0430\u0442\u044c \u0441\u0430\u043c\u044b\u0435 \u0438\u043d\u0442\u0435\u0440\u0435\u0441\u043d\u044b\u0435, \u0442\u0435 \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043c\u043e\u0436\u043d\u043e \u043f\u0440\u0438\u043d\u044f\u0442\u044c \u0438 \u0434\u0435\u043a\u043e\u0434\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u0441\u0430\u043c\u043e\u0441\u0442\u043e\u044f\u0442\u0435\u043b\u044c\u043d\u043e \u0441 \u043f\u043e\u043c\u043e\u0449\u044c\u044e \u043a\u043e\u043c\u043f\u044c\u044e\u0442\u0435\u0440\u0430. \u0414\u043b\u044f [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":24734,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-32975","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041f\u0440\u0438\u0432\u0435\u0442 \u0425\u0430\u0431\u0440. \u041d\u0430 \u0434\u0432\u043e\u0440\u0435 \u0443\u0436\u0435 21\u0439 \u0432\u0435\u043a, \u0438 \u043a\u0430\u0437\u0430\u043b\u043e\u0441\u044c \u0431\u044b, \u043f\u0435\u0440\u0435\u0434\u0430\u0442\u044c \u0434\u0430\u043d\u043d\u044b\u0435 \u043c\u043e\u0436\u043d\u043e \u0432 HD-\u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0435 \u0434\u0430\u0436\u0435 \u043d\u0430 \u041c\u0430\u0440\u0441.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/prohoster.info\/hr\/blog\/administrirovanie\/chto-slyshno-v-radioefire-prinimaem-i-dekodiruem-naibolee-interesnye-signaly\" \/>\n\t\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.4\" \/>\n\t\t<meta property=\"og:locale\" content=\"hr_HR\" \/>\n\t\t<meta property=\"og:site_name\" content=\"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"\ud83e\udd47\u0427\u0442\u043e \u0441\u043b\u044b\u0448\u043d\u043e \u0432 \u0440\u0430\u0434\u0438\u043e\u044d\u0444\u0438\u0440\u0435? 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