{"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\/hu\/blog\/administrirovanie\/chto-slyshno-v-radioefire-prinimaem-i-dekodiruem-naibolee-interesnye-signaly","title":{"rendered":"Mi \u00fajs\u00e1g a r\u00e1di\u00f3ad\u00e1sokban? \u00c9rdekes jeleket fogunk \u00e9s dek\u00f3dolunk","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Hell\u00f3 Habr.<\/p>\n<p>M\u00e1r a 21. sz\u00e1zad van, \u00e9s \u00fagy t\u0171nne, hogy az adatokat HD min\u0151s\u00e9gben is \u00e1t lehetne adni m\u00e9g a Marsra is. Azonban m\u00e9g mindig sok \u00e9rdekes eszk\u00f6z m\u0171k\u00f6dik a r\u00e1di\u00f3hull\u00e1mokban, \u00e9s sz\u00e1mos \u00e9rdekes jelet hallhatunk. <\/p>\n<p><img decoding=\"async\" alt=\"Mi \u00fajs\u00e1g a r\u00e1di\u00f3ad\u00e1sokban? \u00c9rdekes jeleket fogunk \u00e9s dek\u00f3dolunk\" src=\"\/wp-content\/uploads\/2019\/05\/1caeba638c4b2a3aef22b7904889c6b2.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nEzeket mind megvizsg\u00e1lni term\u00e9szetesen lehetetlen, pr\u00f3b\u00e1ljunk meg kiv\u00e1lasztani a leg\u00e9rdekesebb, azokat, amelyeket \u00f6n\u00e1ll\u00f3an is fogadhatunk \u00e9s dek\u00f3dolhatunk sz\u00e1m\u00edt\u00f3g\u00e9p seg\u00edts\u00e9g\u00e9vel. A jelek fogad\u00e1s\u00e1hoz az holland online vev\u0151t fogjuk haszn\u00e1lni. <noindex><a rel=\"nofollow\" href=\"http:\/\/websdr.ewi.utwente.nl:8901\/\">WebSDR<\/a><\/noindex>, a MultiPSK dek\u00f3dert \u00e9s a Virtual Audio Cable programot.<br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<p>A k\u00e9nyelmesebb vizsg\u00e1lat \u00e9rdek\u00e9ben a jeleket a frekvencia n\u00f6veked\u00e9se szerint fogjuk bemutatni. A m\u0171sorsz\u00f3r\u00f3 \u00e1llom\u00e1sokat nem fogom figyelembe venni, ez unalmas \u00e9s ban\u00e1lis, a k\u00edv\u00e1ncsiak maguk is meghallgathatj\u00e1k a K\u00ednai R\u00e1di\u00f3t AM m\u00f3dban. Mi \u00e1tt\u00e9r\u00fcnk \u00e9rdekesebb jelekre.<\/p>\n<h2>Id\u0151jelek<\/h2>\n<p>\nA 77,5 kHz-en (hossz\u00fahull\u00e1m\u00fa tartom\u00e1ny) a n\u00e9met DCF77 \u00e1llom\u00e1s pontos id\u0151jeleit sug\u00e1rozz\u00e1k. Ezekr\u0151l m\u00e1r volt sz\u00f3, <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/445470\/\">k\u00fcl\u00f6n cikk<\/a><\/noindex>ez\u00e9rt csak r\u00f6viden megism\u00e9tlem, hogy ez egy egyszer\u0171 fel\u00e9p\u00edt\u00e9s\u0171 amplit\u00fad\u00f3modul\u00e1ci\u00f3s jel \u2014 a k\u00fcl\u00f6nb\u00f6z\u0151 id\u0151tartamokkal k\u00f3dolt \u201e1\u201d \u00e9s \u201e0\u201d, \u00edgy egy perc alatt egy 58 bites k\u00f3dot kapunk.<br \/>\n<img decoding=\"async\" alt=\"Mi \u00fajs\u00e1g a r\u00e1di\u00f3ad\u00e1sokban? \u00c9rdekes jeleket fogunk \u00e9s dek\u00f3dolunk\" src=\"\/wp-content\/uploads\/2019\/05\/a6489e131a5b2366a3e6cb15f53a5ebb.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h2>130-140 kHz \u2014 Elektromos h\u00e1l\u00f3zatok telemetri\u00e1ja<\/h2>\n<p>\nEzeken a frekvenci\u00e1kon, ha hihet\u00fcnk <noindex><a rel=\"nofollow\" href=\"http:\/\/www.radioscanner.ru\/base\/freq16693.html\">a radioscanner weboldalnak,<\/a><\/noindex>jeleket sug\u00e1roznak a n\u00e9met elektromos h\u00e1l\u00f3zatok ir\u00e1ny\u00edt\u00e1s\u00e1ra. <br \/>\n<img decoding=\"async\" alt=\"Mi \u00fajs\u00e1g a r\u00e1di\u00f3ad\u00e1sokban? \u00c9rdekes jeleket fogunk \u00e9s dek\u00f3dolunk\" src=\"\/wp-content\/uploads\/2019\/05\/239c377386035313353e50f4cf936496.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nA jel el\u00e9gg\u00e9 er\u0151s, \u00e9s visszajelz\u00e9sek szerint m\u00e9g Ausztr\u00e1li\u00e1ban is foghat\u00f3. A MultiPSK programban dek\u00f3dolhat\u00f3, ha a param\u00e9tereket a k\u00e9perny\u0151k\u00e9pen l\u00e1that\u00f3 m\u00f3don \u00e1ll\u00edtjuk be.<br \/>\n<img decoding=\"async\" alt=\"Mi \u00fajs\u00e1g a r\u00e1di\u00f3ad\u00e1sokban? \u00c9rdekes jeleket fogunk \u00e9s dek\u00f3dolunk\" src=\"\/wp-content\/uploads\/2019\/05\/49519f1d6dd6d303b8a656e72086c066.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nA kimenetben adatsorozatokat fogunk kapni, amelyek szerkezete term\u00e9szetesen ismeretlen, akit \u00e9rdekel, az k\u00eds\u00e9rletezhet \u00e9s szabadidej\u00e9ben elemezheti. Technikailag mag a jel nagyon egyszer\u0171, a m\u00f3dszert FSK-nak (Frequency Shift Keying) h\u00edvj\u00e1k, \u00e9s az adatfolyam bitjeinek el\u0151\u00e1ll\u00edt\u00e1s\u00e1ra szolg\u00e1l\u00f3 frekvenciav\u00e1lt\u00e1son alapul. Ugyanez a jel spektrumban megjelen\u00edtve \u2014 a bitek ak\u00e1r manu\u00e1lisan is megsz\u00e1ml\u00e1lhat\u00f3k.<br \/>\n<img decoding=\"async\" alt=\"Mi \u00fajs\u00e1g a r\u00e1di\u00f3ad\u00e1sokban? \u00c9rdekes jeleket fogunk \u00e9s dek\u00f3dolunk\" src=\"\/wp-content\/uploads\/2019\/05\/7bc121c43226b3cc39176aee29a32194.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h2>Meteorol\u00f3giai t\u00e9l\u00e9gr\u00e1f<\/h2>\n<p>\nA fenti spektrumban, nagyon k\u00f6zel, a 147 kHz-en egy m\u00e1sik jel is l\u00e1that\u00f3. Ez a (szint\u00e9n n\u00e9met) DWD (Deutscher Wetterdienst) \u00e1llom\u00e1s, amely id\u0151j\u00e1r\u00e1s-jelent\u00e9seket ad \u00e1t a haj\u00f3k sz\u00e1m\u00e1ra. Ezen a frekvenci\u00e1n k\u00edv\u00fcl jeleket sug\u00e1roznak a 11039 \u00e9s 14467 kHz-en is. <\/p>\n<p>A dek\u00f3dol\u00e1s eredm\u00e9nye a k\u00e9perny\u0151k\u00e9pen l\u00e1that\u00f3.<br \/>\n<img decoding=\"async\" alt=\"Mi \u00fajs\u00e1g a r\u00e1di\u00f3ad\u00e1sokban? \u00c9rdekes jeleket fogunk \u00e9s dek\u00f3dolunk\" src=\"\/wp-content\/uploads\/2019\/05\/c49f6cfc0d611b055266d2c8b82439cb.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nA telegr\u00e1f k\u00f3dol\u00e1s\u00e1nak elve az FSK, az \u00e9rdekess\u00e9g a sz\u00f6veg k\u00f3dol\u00e1sa. Ez 5-bites, a <noindex><a rel=\"nofollow\" href=\"https:\/\/en.wikipedia.org\/wiki\/Baudot_code\">Bodo k\u00f3d seg\u00edts\u00e9g\u00e9vel,<\/a><\/noindex>\u00e9s gyakorlatilag 100 \u00e9ves t\u00f6rt\u00e9nete van.<br \/>\n<img decoding=\"async\" alt=\"Mi \u00fajs\u00e1g a r\u00e1di\u00f3ad\u00e1sokban? \u00c9rdekes jeleket fogunk \u00e9s dek\u00f3dolunk\" src=\"\/wp-content\/uploads\/2019\/05\/47b18d5121326a7db9cadab8cdd96dc4.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\n\u00dagy t\u0171nik, hogy hasonl\u00f3 k\u00f3dot haszn\u00e1ltak a perfor\u00e1lt szalagokon is, m\u00edg a teletippek id\u0151j\u00e1r\u00e1si jelent\u00e9seit valahol az 1960-as \u00e9vekt\u0151l kezdve k\u00fcldik, \u00e9s mint l\u00e1that\u00f3, m\u00e9g mindig m\u0171k\u00f6dnek. Term\u00e9szetesen egy val\u00f3di haj\u00f3n a jelet nem dek\u00f3dolj\u00e1k sz\u00e1m\u00edt\u00f3g\u00e9ppel \u2014 speci\u00e1lis vev\u0151k\u00e9sz\u00fcl\u00e9kek l\u00e9teznek, amelyek r\u00f6gz\u00edtik a jelet \u00e9s megjelen\u00edtik azt a k\u00e9perny\u0151n. <br \/>\n<img decoding=\"async\" alt=\"Mi \u00fajs\u00e1g a r\u00e1di\u00f3ad\u00e1sokban? \u00c9rdekes jeleket fogunk \u00e9s dek\u00f3dolunk\" src=\"\/wp-content\/uploads\/2019\/05\/ac8cbd2aac87725736e3999abf7bd4e5.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\n\u00d6sszess\u00e9g\u00e9ben, m\u00e9g a m\u0171holdas kommunik\u00e1ci\u00f3 \u00e9s az internet megl\u00e9te eset\u00e9n is, az adatok ilyen m\u00f3don t\u00f6rt\u00e9n\u0151 tov\u00e1bb\u00edt\u00e1sa tov\u00e1bbra is egyszer\u0171, megb\u00edzhat\u00f3 \u00e9s olcs\u00f3 eszk\u00f6z marad. B\u00e1r term\u00e9szetesen fel lehet t\u00e9telezni, hogy valamikor ezek a rendszerek is a t\u00f6rt\u00e9nelembe fognak ker\u00fclni, \u00e9s teljesen digit\u00e1lis szolg\u00e1ltat\u00e1sokkal v\u00e1ltj\u00e1k fel \u0151ket. \u00cdgy akik ilyen jelet akarnak fogadni, nem \u00e9rdemes t\u00fal sok\u00e1ig v\u00e1rniuk. <\/p>\n<h2>Meteofax<\/h2>\n<p>\nEgy m\u00e1sik legacy-jel, amelynek t\u00f6rt\u00e9nete k\u00f6zel ugyanolyan r\u00e9gi. Ebben a jelben a k\u00e9p tov\u00e1bb\u00edt\u00e1sa t\u00f6rt\u00e9nik <i>anal\u00f3g form\u00e1ban<\/i> 120 vonal per perc sebess\u00e9ggel (m\u00e1s \u00e9rt\u00e9kek is l\u00e9teznek, p\u00e9ld\u00e1ul 60 vagy 240 LPM), a f\u00e9nyer\u0151 k\u00f3dol\u00e1s\u00e1hoz frekvenciamodul\u00e1ci\u00f3t haszn\u00e1lnak - a k\u00e9p minden egyes pontj\u00e1nak f\u00e9nyer\u0151ss\u00e9ge ar\u00e1nyos a frekvencia v\u00e1ltoz\u00e1s\u00e1val. Ez a egyszer\u0171 s\u00e9ma lehet\u0151v\u00e9 tette a k\u00e9pek tov\u00e1bb\u00edt\u00e1s\u00e1t abban az id\u0151ben is, amikor a \"digit\u00e1lis jelekr\u0151l\" alig hallottak az emberek.<\/p>\n<p>A n\u00e9met DWD (Deutche Wetterdienst) \u00e1llom\u00e1s n\u00e9pszer\u0171 az eur\u00f3pai r\u00e9szen, \u00e9s k\u00e9nyelmes a v\u00e9telhez, amely 3855, 7880 \u00e9s 13882 kHz frekvenci\u00e1kon tov\u00e1bb\u00edtja az \u00fczeneteket. Egy m\u00e1sik szervezet, amelynek faxai k\u00f6nnyen fogadhat\u00f3k \u2014 a brit Joint Operational Meteorology and Oceanography Centre, jeleket k\u00fcldenek 2618, 4610, 6834, 8040, 11086, 12390 \u00e9s 18261 kHz frekvenci\u00e1kon.<\/p>\n<p>HF Fax jelek fogad\u00e1s\u00e1hoz USB vev\u0151 \u00fczemm\u00f3dot kell haszn\u00e1lni, a dek\u00f3dol\u00e1shoz a MultiPSK haszn\u00e1lhat\u00f3. A websdr vev\u0151n kereszt\u00fcli v\u00e9tel eredm\u00e9nye a k\u00e9pen l\u00e1that\u00f3:<br \/>\n<img decoding=\"async\" alt=\"Mi \u00fajs\u00e1g a r\u00e1di\u00f3ad\u00e1sokban? \u00c9rdekes jeleket fogunk \u00e9s dek\u00f3dolunk\" src=\"\/wp-content\/uploads\/2019\/05\/278b57dddf9874a61f7ed4eeae82126f.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nEz a k\u00e9p k\u00f6zvetlen\u00fcl a sz\u00f6veg \u00edr\u00e1sa alatt k\u00e9sz\u00fclt. \u00c9rdekes, hogy a f\u00fcgg\u0151leges vonalak elcs\u00fasztak \u2014 a protokoll anal\u00f3g, \u00e9s a szinkroniz\u00e1l\u00e1s pontoss\u00e1ga kritikus, m\u00e9g a kis k\u00e9sleked\u00e9sek is elmozd\u00edtj\u00e1k a k\u00e9pet. Val\u00f3di vev\u0151 haszn\u00e1lata eset\u00e9n ilyen hat\u00e1s nem lesz.<\/p>\n<p>Term\u00e9szetesen, ak\u00e1rcsak a meteorol\u00f3giai teletippek eset\u00e9ben, a haj\u00f3kon senki sem dek\u00f3dolja a faxokat sz\u00e1m\u00edt\u00f3g\u00e9ppel \u2014 l\u00e9teznek speci\u00e1lis vev\u0151k\u00e9sz\u00fcl\u00e9kek (a cikk elej\u00e9n l\u00e1that\u00f3 k\u00e9p p\u00e9ld\u00e1ul), amelyek automatikusan elv\u00e9gzik az \u00f6sszes munk\u00e1t.<\/p>\n<h2>STANAG 4285<\/h2>\n<p>\nN\u00e9zz\u00fck meg most a r\u00f6vidhull\u00e1m\u00fa adat\u00e1tvitel modernebb szabv\u00e1ny\u00e1t \u2014 a Stanag 4285 modemet. Ezt a form\u00e1tumot a NATO sz\u00e1m\u00e1ra fejlesztett\u00e9k ki, \u00e9s k\u00fcl\u00f6nb\u00f6z\u0151 v\u00e1ltozatai l\u00e9teznek. Alapj\u00e1t a f\u00e1zismodul\u00e1ci\u00f3 k\u00e9pezi, a jel param\u00e9terei v\u00e1ltozhatnak, ahogy az a t\u00e1bl\u00e1zatb\u00f3l is l\u00e1that\u00f3, a sebess\u00e9g 75 \u00e9s 2400 bit\/s k\u00f6z\u00f6tt mozoghat. Ez tal\u00e1n kev\u00e9snek t\u0171nhet, de figyelembe v\u00e9ve az \u00e1tviteli k\u00f6rnyezetet \u2014 a r\u00f6vidhull\u00e1mokat, amelyeknek megakad\u00e1sai \u00e9s zavarai vannak, ez igaz\u00e1n j\u00f3 eredm\u00e9ny.<br \/>\n<img decoding=\"async\" alt=\"Mi \u00fajs\u00e1g a r\u00e1di\u00f3ad\u00e1sokban? \u00c9rdekes jeleket fogunk \u00e9s dek\u00f3dolunk\" src=\"\/wp-content\/uploads\/2019\/05\/74a25e98f7bb3630ce8f7c95b7083c4f.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nA MultiPSK program dek\u00f3dolni tudja a STANAG-ot, de az esetek 95%-\u00e1ban a dek\u00f3dol\u00e1s eredm\u00e9nye csak \u201eszem\u00e9t\u201d lesz \u2014 a form\u00e1tum csak egy bit-szint\u0171 alacsony szint\u0171 protokollt k\u00edn\u00e1l, m\u00edg az adatok titkos\u00edtottak lehetnek vagy saj\u00e1t form\u00e1tummal rendelkezhetnek. N\u00e9h\u00e1ny jel azonban dek\u00f3dolhat\u00f3, p\u00e9ld\u00e1ul az al\u00e1bbi felv\u00e9tel 8453 KHz-en. Valamilyen jelet dek\u00f3dolni a websdr vev\u0151n kereszt\u00fcl nem siker\u00fclt, val\u00f3sz\u00edn\u0171leg az online \u00e1tad\u00e1s megs\u00e9rti az adatok strukt\u00far\u00e1j\u00e1t. Aki szeretn\u00e9, let\u00f6ltheti a val\u00f3s vev\u0151r\u0151l k\u00e9sz\u00fclt f\u00e1jlt a linken. <noindex><a rel=\"nofollow\" href=\"https:\/\/cloud.mail.ru\/public\/JRZs\/gH581X71s\">cloud.mail.ru\/public\/JRZs\/gH581X71s<\/a><\/noindex>. A MultiPSK-ban v\u00e9gzett dek\u00f3dol\u00e1s eredm\u00e9nyei az al\u00e1bbi k\u00e9perny\u0151k\u00e9pen l\u00e1that\u00f3k. Ahogy l\u00e1that\u00f3, a sebess\u00e9g enn\u00e9l a felv\u00e9teln\u00e9l 600 bps, a tartalm\u00e1nak pedig egy sz\u00f6veges f\u00e1jl \u00e1tvitele t\u0171nik.<br \/>\n<img decoding=\"async\" alt=\"Mi \u00fajs\u00e1g a r\u00e1di\u00f3ad\u00e1sokban? \u00c9rdekes jeleket fogunk \u00e9s dek\u00f3dolunk\" src=\"\/wp-content\/uploads\/2019\/05\/761ebe9eb3668e0e5bb34336e619ac43.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\n\u00c9rdekes, hogy ahogy a panor\u00e1m\u00e1ban l\u00e1that\u00f3, ebb\u0151l a jelb\u0151l val\u00f3ban rengeteg van az \u00e9terben:<br \/>\n<img decoding=\"async\" alt=\"Mi \u00fajs\u00e1g a r\u00e1di\u00f3ad\u00e1sokban? \u00c9rdekes jeleket fogunk \u00e9s dek\u00f3dolunk\" src=\"\/wp-content\/uploads\/2019\/05\/68880118c94f1e494f3d664ebde165b6.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nTerm\u00e9szetesen nem mind k\u00f6zvetlen\u00fcl a STANAG-hoz tartozik \u2014 hasonl\u00f3 elvek alapj\u00e1n m\u00e1s protokollok is l\u00e9teznek. P\u00e9ld\u00e1ul, itt van egy jel dek\u00f3dol\u00e1sa. <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>Mint a kor\u00e1bban t\u00e1rgyalt jelek eset\u00e9ben, a val\u00f3di v\u00e9telhez \u00e9s tov\u00e1bb\u00edt\u00e1shoz szakosodott eszk\u00f6z\u00f6kre van sz\u00fcks\u00e9g. P\u00e9ld\u00e1ul a f\u00e9nyk\u00e9pen l\u00e1that\u00f3 modem eset\u00e9ben. <noindex><a rel=\"nofollow\" href=\"http:\/\/nsgdata.com\/fredelec\/products\/4539.pdf\">NSGDatacom 4539<\/a><\/noindex> a sebess\u00e9g 75 \u00e9s 9600 bps k\u00f6z\u00f6tt van, a jels\u00e1vsz\u00e9less\u00e9g 3 KHz.<br \/>\n<img decoding=\"async\" alt=\"Mi \u00fajs\u00e1g a r\u00e1di\u00f3ad\u00e1sokban? \u00c9rdekes jeleket fogunk \u00e9s dek\u00f3dolunk\" src=\"\/wp-content\/uploads\/2019\/05\/33d24be4253248865f7ac2ee77e42f7d.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nA 9600-as sebess\u00e9g term\u00e9szetesen nem t\u00fal leny\u0171g\u00f6z\u0151, de figyelembe v\u00e9ve, hogy a jeleket ak\u00e1r dzsungelb\u0151l vagy haj\u00f3r\u00f3l is lehet tov\u00e1bb\u00edtani az \u00f3ce\u00e1nban, r\u00e1ad\u00e1sul a telecom szolg\u00e1ltat\u00f3nak nem kell \u00e9rte fizetni, ez nem is olyan rossz.<\/p>\n<p>N\u00e9zz\u00fck egy\u00e9bk\u00e9nt k\u00f6zelebbr\u0151l a fenti panor\u00e1m\u00e1t. Balra l\u00e1tjuk\u2026 helyesen, a r\u00e9gi j\u00f3 Morse-\u00e1b\u00e9c\u00e9t. Teh\u00e1t, l\u00e9pj\u00fcnk a k\u00f6vetkez\u0151 jelre.<\/p>\n<h2>Morse-k\u00f3d (CW)<\/h2>\n<p>\nA 8423 kHz frekvenci\u00e1n pontosan ezt halljuk. A Morse-abc hall\u00e1s\u00e1nak m\u0171v\u00e9szete szinte elveszett, ez\u00e9rt a MultiPSK-t fogjuk haszn\u00e1lni (b\u00e1r a dek\u00f3dol\u00e1sa nem a legjobb, a CW Skimmer sokkal jobban teljes\u00edt).<br \/>\n<img decoding=\"async\" alt=\"Mi \u00fajs\u00e1g a r\u00e1di\u00f3ad\u00e1sokban? \u00c9rdekes jeleket fogunk \u00e9s dek\u00f3dolunk\" src=\"\/wp-content\/uploads\/2019\/05\/4c4d7ee062d5972cf0ce2e8e8e602e81.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nAhogy l\u00e1that\u00f3, a DE SVO folyamatosan ism\u00e9tl\u0151d\u0151 sz\u00f6veget tov\u00e1bb\u00edt, ha hihet\u00fcnk neki. <noindex><a rel=\"nofollow\" href=\"http:\/\/www.radioscanner.ru\/base\/freq391.html\">a radioscanner weboldalnak,<\/a><\/noindex>, az \u00e1llom\u00e1s G\u00f6r\u00f6gorsz\u00e1gban tal\u00e1lhat\u00f3. <\/p>\n<p>Term\u00e9szetesen m\u00e1r kev\u00e9s ilyen jel l\u00e9tezik, de m\u00e9g mindig fellelhet\u0151k. P\u00e9ld\u00e1ul eml\u00edthet\u00fcnk egy r\u00e9gi \u00e1llom\u00e1st 4331 kHz-en, amely ism\u00e9tl\u0151d\u0151 \"VVV DE E4X4XZ\" jeleket ad \u00e1t. A Google szerint az \u00e1llom\u00e1s az izraeli haditenger\u00e9szethez tartozik. Tov\u00e1bb\u00edt-e valami m\u00e1st ezen a frekvenci\u00e1n? A v\u00e1lasz ismeretlen, az \u00e9rdekl\u0151d\u0151k hallgathatnak \u00e9s ellen\u0151rizhetik maguk. <\/p>\n<h2>A Buzzer (\u0423\u0412\u0411-76)<\/h2>\n<p>\nA mi lista v\u00e9g\u00e9n a legh\u00edresebb jel \u00e1ll \u2014 ismert Oroszorsz\u00e1gban \u00e9s azon k\u00edv\u00fcl is, a 4625 kHz-es frekvenci\u00e1n. <br \/>\n<img decoding=\"async\" alt=\"Mi \u00fajs\u00e1g a r\u00e1di\u00f3ad\u00e1sokban? \u00c9rdekes jeleket fogunk \u00e9s dek\u00f3dolunk\" src=\"\/wp-content\/uploads\/2019\/05\/8b3545e5097368148063e95ca63dbbd0.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nA jelet a csapatok \u00e9rtes\u00edt\u00e9s\u00e9re haszn\u00e1lj\u00e1k, \u00e9s ism\u00e9tl\u0151d\u0151 hangjelekb\u0151l \u00e1ll, amelyek k\u00f6z\u00f6tt id\u0151nk\u00e9nt k\u00f3dolt kifejez\u00e9sek ker\u00fclnek tov\u00e1bb\u00edt\u00e1sra a titkos noteszb\u00f3l (abstrakt szavak, mint p\u00e9ld\u00e1ul \"\u041a\u0420\u041e\u041b\u0418\u0421\u0422\" vagy \"\u0411\u0420\u0410\u041c\u0418\u0420\u041a\u0410\"). Egyesek azt \u00edrj\u00e1k, hogy ilyen vev\u0151ket l\u00e1ttak a katonas\u00e1gn\u00e1l, m\u00e1sok azt mondj\u00e1k, hogy ez a \"holttest k\u00e9z\" rendszer\u00e9nek r\u00e9sze, mindenesetre a jel a Stalker, a megfigyel\u0151 elm\u00e9letek, a \"hidegh\u00e1bor\u00fa\" \u00e9s egyebek kedvel\u0151inek Mekk\u00e1ja. Az \u00e9rdekl\u0151d\u0151k kereshetnek \"\u0423\u0412\u0411-76\"-t, \u00e9s biztos vagyok benne, hogy izgalmas olvasm\u00e1nyra sz\u00e1m\u00edthatnak az est\u00e9re (b\u00e1r nem \u00e9rdemes mindent komolyan venni). Ugyanakkor a rendszer el\u00e9g \u00e9rdekes, hiszen a \"hidegh\u00e1bor\u00fa\" \u00f3ta m\u0171k\u00f6dik, b\u00e1r neh\u00e9z megmondani, hogy sz\u00fcks\u00e9ge van-e r\u00e1 b\u00e1rkinek ma. <\/p>\n<h2>Befejez\u00e9s<\/h2>\n<p>\nEz a lista messze nem teljes. R\u00e1di\u00f3vev\u0151 seg\u00edts\u00e9g\u00e9vel hallhat\u00f3 (vagy pontosabban l\u00e1that\u00f3) a tengeralattj\u00e1r\u00f3kkal val\u00f3 kapcsolattart\u00e1si jel valamint a f\u00f6ld alatti radarrendszerek \u00e9s a gyorsan v\u00e1ltoz\u00f3 frequency hopping jelek, \u00e9s m\u00e9g sok m\u00e1s. <\/p>\n<p>\u00cdme egy p\u00e9lda a mostani 8 MHz-es frekvenci\u00e1n k\u00e9sz\u00fclt k\u00e9pr\u0151l, amelyen minimum 5 k\u00fcl\u00f6nb\u00f6z\u0151 t\u00edpus\u00fa jel l\u00e1that\u00f3. <br \/>\n<img decoding=\"async\" alt=\"Mi \u00fajs\u00e1g a r\u00e1di\u00f3ad\u00e1sokban? \u00c9rdekes jeleket fogunk \u00e9s dek\u00f3dolunk\" src=\"\/wp-content\/uploads\/2019\/05\/e9b9b91070293f10597928aec4300d31.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nMit is k\u00e9pviselnek \u2014 gyakran nem ismert, legal\u00e1bbis a ny\u00edlt forr\u00e1sokban nem minden inform\u00e1ci\u00f3 tal\u00e1lhat\u00f3 meg (b\u00e1r vannak olyan weboldalak, mint <noindex><a rel=\"nofollow\" href=\"https:\/\/www.sigidwiki.com\/wiki\/Signal_Identification_Guide\">www.sigidwiki.com\/wiki\/Signal_Identification_Guide<\/a><\/noindex> \u00e9s <noindex><a rel=\"nofollow\" href=\"http:\/\/www.radioscanner.ru\/base\/\">www.radioscanner.ru\/base<\/a><\/noindex>). Az ilyen jelek tanulm\u00e1nyoz\u00e1sa nagyon \u00e9rdekes, mind a matematika, programoz\u00e1s \u00e9s a t\u00e1vk\u00f6zl\u00e9s szempontj\u00e1b\u00f3l, mind pedig mint \u00faj dolgok felfedez\u00e9s\u00e9nek m\u00f3dja a k\u00f6r\u00fcl\u00f6tt\u00fcnk l\u00e9v\u0151 vil\u00e1gr\u00f3l.<\/p>\n<p>\u00c9rdekes az is, hogy ahelyett, hogy az internet \u00e9s a kommunik\u00e1ci\u00f3k fejl\u0151d\u00e9s\u00e9vel a r\u00e1di\u00f3 h\u00e1tt\u00e9rbe szorulna, \u00e9ppen ellenkez\u0151leg - az adatok k\u00f6zvetlen tov\u00e1bb\u00edt\u00e1s\u00e1nak lehet\u0151s\u00e9ge az elk\u00fcld\u0151 \u00e9s a c\u00edmzett k\u00f6z\u00f6tt, cenz\u00fara, forgalomellen\u0151rz\u00e9s \u00e9s csomagk\u00f6vet\u00e9s n\u00e9lk\u00fcl, \u00fajra aktu\u00e1liss\u00e1 v\u00e1lhat (b\u00e1r rem\u00e9lj\u00fck, hogy ez m\u00e9gsem fog megt\u00f6rt\u00e9nni)...<br \/>\n<br \/>Forr\u00e1s: <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 5.0.3 - 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