{"id":80389,"date":"2020-05-05T13:42:36","date_gmt":"2020-05-05T11:42:36","guid":{"rendered":"https:\/\/prohoster.info\/blog\/administrirovanie\/dzhon-rejnarcz-i-ego-legendarnyj-radiopriyomnik"},"modified":"2020-05-05T13:42:36","modified_gmt":"2020-05-05T11:42:36","slug":"dzhon-rejnarcz-i-ego-legendarnyj-radiopriyomnik","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hr\/blog\/administrirovanie\/dzhon-rejnarcz-i-ego-legendarnyj-radiopriyomnik","title":{"rendered":"John Reinarz i njegov legendarni radio prijemnik","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><img decoding=\"async\" alt=\"John Reinarz i njegov legendarni radio prijemnik\" src=\"\/wp-content\/uploads\/2020\/05\/786493ab9aa395d0ba4c6e7ace218e8d.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n27. studenog 1923. godine ameri\u010dki radioamateri John Reinartz (1QP) i Fred Schnell (1MO) uspostavili su dvosmjernu transatlantsku radio vezu s radioamaterom iz Francuske, Leonom Deloyem (F8AB), na valnoj duljini od oko 100 m. Ovaj doga\u0111aj imao je ogroman utjecaj na razvoj svjetskog radioamaterskog pokreta i kratkovalnog radija. Jedan od odlu\u010duju\u0107ih faktora koji su utjecali na uspjeh bila je dorada Schnell-a i Reinartz-a sheme regenerativnog radio prijemnika Armstrong. Dorede su bile toliko uspje\u0161ne da su imena \u201eSchnell\u201c i \u201eReinartz\u201c postala sinonimi za ovakve prijemnike.<br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<h1>To je bio obi\u010dni \u201erejnar\u201d&#8230;<\/h1>\n<p>\nSveobuhvatna Wikipedia o Johnu Reinartzu nije mi mogla re\u0107i ni\u0161ta. Ova povijesna esej napisana je prema fragmentiranim publikacijama ameri\u010dkih radioamatera, kao i materijalima iz sije\u010danjskog izdanja \u010dasopisa \u201eQST\u201c iz 1924. godine i broja 23-24 \u010dasopisa \u201eRadioamaters\u201c iz 1926. godine.<\/p>\n<p>John Reinartz ro\u0111en je 6. o\u017eujka 1894. godine u Njema\u010dkoj. Godine 1904. Reinartz obitelj preselila se iz Njema\u010dke u Ju\u017eni Manchester, Connecticut, SAD. Godine 1908. John se zainteresirao za radio, a 1915. godine jedan je od prvih u zemlji postao \u010dlan nacionalne asocijacije ameri\u010dkih radioamatera (ARRL).<\/p>\n<p>Po\u010dela je era osvajanja radio valova. I vode\u0107e svjetske laboratorije i obi\u010dni entuzijasti tra\u017eili su tehni\u010dka rje\u0161enja za radio prijemne i prijenosne ure\u0111aje. Kao \u0161to sam ve\u0107 pisao u prethodnim \u010dlancima ove serije, elektromehani\u010dki generatori i kristalni detektori tada su aktivno zamijenjeni rje\u0161enjima temeljenim na elektronskim cijevima.<\/p>\n<p>Jedan od proboja tog vremena bilo je izum <noindex><a rel=\"nofollow\" href=\"https:\/\/ru.wikipedia.org\/wiki\/%D0%90%D1%80%D0%BC%D1%81%D1%82%D1%80%D0%BE%D0%BD%D0%B3,_%D0%AD%D0%B4%D0%B2%D0%B8%D0%BD\">Armstronga<\/a><\/noindex> regenerativnog radio prijemnika. Rje\u0161enje je bilo jednostavno, jeftino, i omogu\u0107ilo je stvaranje ure\u0111aja za dalekometni radio prijem samo s jednom radio cijevi. Slo\u017eenost je bila u mehani\u010dkom pode\u0161avanju polo\u017eaja zavojnice povratne informacije. \u0160to je bila vi\u0161a frekvencija prijema, to je vi\u0161e \u201eo\u0161tra\u201c bila ta postavka.<\/p>\n<p>John Reinartz zna\u010dajno je unaprijedio shemu Armstronga, \u010dvrsto u\u010dvrstiv\u0161i zavojnicu povratne informacije. Pode\u0161avanje koli\u010dine povratne informacije u Reinartz-ovom prijemniku (Reinartz Tuner) vr\u0161ilo se kondenzatorom promjenjive kapacitete (KPE). Za smanjenje \u201eo\u0161trine\u201c pode\u0161avanja, KPE su kori\u0161teni vernierski ure\u0111aji.<\/p>\n<p>Za razliku od Armstronga, koji se cijeli svoj \u017eivot tu\u017eio za svoje patente i prioritete, Reynarz je jednostavno objavio svoju konstrukciju u lipanjskom broju \"QST\" iz 1921. godine. Nakon toga slijedile su jo\u0161 dvije \u010dlanke s pobolj\u0161anjima.<\/p>\n<p>U <noindex><a rel=\"nofollow\" href=\"http:\/\/www.k2tqn.net\/oldradio\/arrl\/2014-03\/The%20Reinartz%20Tuner.html\">objave ameri\u010dkog radioamatera Johna Dilksa (K2TQN)<\/a><\/noindex> ima primjer implementacije prijemnika Reynarza na jednoj cijevi:<\/p>\n<p><img decoding=\"async\" alt=\"John Reinarz i njegov legendarni radio prijemnik\" src=\"\/wp-content\/uploads\/2020\/05\/6f90490678e64ea2c5493e738432f7a0.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<h1>\u2026 i radio je vrlo jednostavno&#8230;<\/h1>\n<p>\nCjevna shematika privla\u010di surovom ljepotom tehni\u010dkih rje\u0161enja. Sve na svom mjestu, ni\u0161ta suvi\u0161no.<\/p>\n<p>U \u010dlanku sam namjerno odlu\u010dio ne navoditi sheme iz publikacija 20-ih godina XX stolje\u0107a, ve\u0107 sam se oslonio na antologijsko prvo izdanje \"Mla\u0111eg radioamatera\" Borisova. Tako je jednostavno i slikovito prikazano njegov rad prijemnika s izravnom amplifikacijom na jednoj cijevi:<\/p>\n<p><img decoding=\"async\" alt=\"John Reinarz i njegov legendarni radio prijemnik\" src=\"\/wp-content\/uploads\/2020\/05\/858fe1bcd5fb5412b00be9c605cebd63.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nRad rezonantnog kruga na ulazu sheme i slu\u0161alice s blokiraju\u0107im kondenzatorom na izlazu razlo\u017eili smo u \u010dlanku o \"kristadinu\" Loseva. Razlo\u017eit \u0107emo rad kruga RcCc na ulazu triodnog poja\u010dala.<\/p>\n<p>Krug RcCc zove se \"gridlik\" (od engleskog: grid leak \u2014 curenje re\u0161etke), pomo\u0107u njega se provodi \"re\u0161etkasto detektiranje\", kada poja\u010dalo na cijevi i detektira signal i poja\u010dava ga.<\/p>\n<p>Grafikon (a) prikazuje anodni tok poja\u010dala kada \"gridlik\" ne postoji. Vidimo da se ulazni signal poja\u010dava izravno.<\/p>\n<p>Nakon uklju\u010divanja \"gridlika\" u krug upravlja\u010dke re\u0161etke promatramo u anodnim krugovima pulsacije struje (grafikon b). Blokiraju\u0107i kondenzator filtrira visokofrekventne komponente (grafikon c), i dobivamo u slu\u0161alicama signale zvu\u010dne frekvencije.<\/p>\n<p>Sada \u0107emo pogledati \u0161to su s ovom shemom u\u010dinili Armstrong i Reynarz:<\/p>\n<p><img decoding=\"async\" alt=\"John Reinarz i njegov legendarni radio prijemnik\" src=\"\/wp-content\/uploads\/2020\/05\/d67ba7545c431cb4c9ef13d8c5cd6943.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nArmstrong je u anodne krugove poja\u010dala uveo namotaj povratne sprege. U slu\u010daju pozitivne povratne sprege, signalu u rezonantnom krugu dodaje se signal iz namotaja povratne sprege. Razina povratne sprege se bira tako da je poja\u010dalo na granici samovima\u0107enja, \u0161to osigurava maksimalnu razinu poja\u010danja ulaznog signala.<\/p>\n<p>Prilikom prijema na kratkim valovima, pode\u0161avanje sheme Armstronga za rad u regenerativnom re\u017eimu bilo je problemati\u010dno: najmanje pomicanje namotaja povratne sprege dovodilo je do velikih promjena u parametrima prijema.<\/p>\n<p>John Reynarz rije\u0161io je problem fiksiranjem me\u0111usobnog polo\u017eaja namotaja L1 i L2 kako bi me\u0111uinvokacije izme\u0111u njih i promjene kapaciteta povratnog kondenzatora bile dovoljne za rad prijemnika u re\u017eimu regeneracije u \u0161irokom rasponu valnih duljina. <\/p>\n<p>Za pove\u0107anje stabilnosti rada u anodne krugove lampi uveden je reaktorski napon. Osiguravao je razdvajanje visokofrekventnih krugova prijemnika od niskofrekventnih i u\u010dinkovito filtrirao iz signala zvu\u010dnu frekvencijsku komponentu radiovalne frekvencije.<\/p>\n<p>Za \"rastezanje\" postavki frekvencije i povratne informacije kori\u0161teni su vernieri - smanjuju\u0107i reduktori izme\u0111u pode\u0161avanja i osi kondenzatora. Ova tehni\u010dka rje\u0161enja osigurala su glatko pode\u0161avanje frekvencije prijema, a \u0161to je najva\u017enije - razinu povratne informacije.<\/p>\n<p>Prilikom pode\u0161avanja prijemnika na radiostanicu, prvo se postavljao razina povratne informacije s pove\u0107anjem glasno\u0107e \u0161uma etera. Prijemnik je, u biti, ulazio u re\u017eim \"autodina\", tj. po\u010dinjao raditi kao heterodinski prijemnik. Prilikom pode\u0161avanja na frekvenciju stanice, u ovom slu\u010daju, prvo se pojavljivao zvi\u017eduk od udarca vlastitih oscilacija i frekvencije nositelja. Na taj na\u010din primali su rad radio telegrafom (CW).<\/p>\n<p>Prilikom prijema emitivnih radiostanica (AM), daljnje pode\u0161avanje frekvencije nastavljalo se do postizanja \"nultih udaraca\", nakon \u010dega se smanjivala razina povratne informacije, usmjeravaju\u0107i se prema kvaliteti zvuka.<\/p>\n<p>Usput, primije\u0107en je zanimljiv u\u010dinak: regenerativni prijemnik pri neto\u010dnom pode\u0161avanju na stanicu \u010desto je po\u010dinjao prilago\u0111avati frekvenciju i fazu vlastitih oscilacija prema signalu nositelja. Ova automatska prilagodba osigurala je sinkroni na\u010din prijema.<\/p>\n<h1>\u2026 iako ne savr\u0161eno<\/h1>\n<p>\nRegenerativni prijemnici imaju niz prednosti, ali i niz nedostataka.<\/p>\n<p>Me\u0111u prednostima treba istaknuti visoki omjer \"cijena-kvaliteta\". Osim toga, \"regeneratori\" su osiguravali odre\u0111enu svestranost u kori\u0161tenju: omogu\u0107avali su prijem emitivnih stanica u re\u017eimu regeneracije; u re\u017eimu autogeneracije radili su kao heterodinski prijemnici, a na njima se moglo primati radio telegraf.<\/p>\n<p>Glavni nedostatak bila je potreba za stalnim pode\u0161avanjem povratne informacije i parazitsko zra\u010denje prijemnika u eter. Podsjetite se na Vasyu Taburetkin!<\/p>\n<p>Nakon rata, regenerativni prijemnici su po\u010deli biti potisnuti superheterodinskim. Ali to je ve\u0107 druga pri\u010da\u2026<\/p>\n<h4>Od autora<\/h4>\n<p>\nU 20-im godinama, John Reynarz se bavio istra\u017eivanjem \u0161irenja kratkih valova. Sudjelovao je u arkti\u010dkoj ekspediciji.<br \/>\nOd 1933. godine radio je u RCA.<br \/>\nGodine 1938. primljen je u vojsku, zavr\u0161io je slu\u017ebu 1946. godine kao kapetan.<br \/>\nGodine 1946. se vratio na posao u RCA.<br \/>\nOd 1949. godine radio je u Eimacu.<br \/>\n1. velja\u010de 1960. godine odr\u017ean je veli\u010danstveni banket povodom odlaska Reynarza u mirovinu, na kojem je sudjelovalo vi\u0161e od dvjesto uglednih radio-amatera.<br \/>\nPreminuo je 18. rujna 1964. godine. <\/p>\n<h4>Kori\u0161teni izvori<\/h4>\n<p>\n1. \u201eQST\u201c, 1924, br. 1<br \/>\n2. \u201eRadioamater\u201c, 1926, br. 23-24<br \/>\n3. Borisov V.G. Mladom radioamateru \u2013 M.: Gosenergoizdat, 1951<\/p>\n<h4>Druge publikacije ciklusa<\/h4>\n<p>\n1. <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/466605\/\">Ni\u017enjegorodska radiolaboratorija i amaterska radio-veza na KV-u<\/a><\/noindex><br \/>\n2. <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/474532\/\">Ni\u017enjegorodska radiolaboratorija i radio prijemnici na kristalnim detektorima<\/a><\/noindex><br \/>\n3. <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/474720\/\">Ni\u017enjegorodska radiolaboratorija i \u201ekrystadin\u201c Loseva<\/a><\/noindex><br \/>\n4. <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/489378\/\">John Reinarz i njegov legendarni radio prijemnik<\/a><\/noindex><br \/>\n<br \/>Izvor: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/489378\/\">habr.com<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>27 \u043d\u043e\u044f\u0431\u0440\u044f 1923 \u0433\u043e\u0434\u0430 \u0430\u043c\u0435\u0440\u0438\u043a\u0430\u043d\u0441\u043a\u0438\u0435 \u0440\u0430\u0434\u0438\u043e\u043b\u044e\u0431\u0438\u0442\u0435\u043b\u0438 \u0414\u0436\u043e\u043d \u0420\u0435\u0439\u043d\u0430\u0440\u0446 (John L. Reinartz, 1QP) \u0438 \u0424\u0440\u0435\u0434 \u0428\u043d\u0435\u043b\u043b\u044c (Fred H. Schnell, 1MO) \u043f\u0440\u043e\u0432\u0435\u043b\u0438 \u0434\u0432\u0443\u0441\u0442\u043e\u0440\u043e\u043d\u043d\u044e\u044e \u0442\u0440\u0430\u043d\u0441\u0430\u0442\u043b\u0430\u043d\u0442\u0438\u0447\u0435\u0441\u043a\u0443\u044e \u0440\u0430\u0434\u0438\u043e\u0441\u0432\u044f\u0437\u044c \u0441 \u0440\u0430\u0434\u0438\u043e\u043b\u044e\u0431\u0438\u0442\u0435\u043b\u0435\u043c \u0438\u0437 \u0424\u0440\u0430\u043d\u0446\u0438\u0438 \u041b\u0435\u043e\u043d\u043e\u043c \u0414\u0435\u043b\u043e\u0435\u043c (Leon Deloy, F8AB) \u043d\u0430 \u0434\u043b\u0438\u043d\u0435 \u0432\u043e\u043b\u043d\u044b \u043e\u043a\u043e\u043b\u043e 100 \u043c. \u042d\u0442\u043e \u0441\u043e\u0431\u044b\u0442\u0438\u0435 \u043e\u043a\u0430\u0437\u0430\u043b\u043e \u043e\u0433\u0440\u043e\u043c\u043d\u043e\u0435 \u0432\u043b\u0438\u044f\u043d\u0438\u0435 \u043d\u0430 \u0440\u0430\u0437\u0432\u0438\u0442\u0438\u0435 \u043c\u0438\u0440\u043e\u0432\u043e\u0433\u043e \u0440\u0430\u0434\u0438\u043e\u043b\u044e\u0431\u0438\u0442\u0435\u043b\u044c\u0441\u043a\u043e\u0433\u043e \u0434\u0432\u0438\u0436\u0435\u043d\u0438\u044f \u0438 \u0440\u0430\u0434\u0438\u043e\u0441\u0432\u044f\u0437\u0438 \u043d\u0430 \u043a\u043e\u0440\u043e\u0442\u043a\u0438\u0445 \u0432\u043e\u043b\u043d\u0430\u0445. \u041e\u0434\u043d\u0438\u043c \u0438\u0437 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":80390,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-80389","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=\"27 \u043d\u043e\u044f\u0431\u0440\u044f 1923 \u0433\u043e\u0434\u0430 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