{"id":203,"date":"2002-04-15T13:24:10","date_gmt":"2002-04-15T13:24:10","guid":{"rendered":"https:\/\/satelit.cz\/?p=203"},"modified":"2002-04-15T13:24:10","modified_gmt":"2002-04-15T13:24:10","slug":"informace-z-mikrovlnneho-setkani-2","status":"publish","type":"post","link":"https:\/\/satelit.cz\/?p=203","title":{"rendered":"Informace z Mikrovlnn\u00e9ho setk\u00e1n\u00ed"},"content":{"rendered":"

<\/a>Pokud se V\u00e1m nepoda\u0159ilo se o v\u00edkendu pod\u00edvat do Studnice u Nov\u00e9ho M\u011bsta na Morav\u011b, p\u0159in\u00e1\u0161\u00edm V\u00e1m stru\u010dn\u00fd pr\u016f\u0159ez p\u0159edn\u00e1\u0161kami, kter\u00e9 zde prob\u011bhly. Na okraj snad jen to, \u017ee cel\u00fd v\u00edkend byl prov\u00e1zen mlhav\u00fdm po\u010das\u00edm a tak se v podstat\u011b v\u0161e odehr\u00e1lo uvnit\u0159 chaty TJ Studnice.
\nJako ka\u017edoro\u010dn\u011b jsme se vypravili s klukama z OK1KIM na setk\u00e1n\u00ed v\u011bnovan\u00e9 mikrovlnn\u00e9 technice a EME do Studnice ji\u017e v p\u00e1tek odpoledne. Organizaci tentokr\u00e1t od Franty OK1CA p\u0159evzal Zden\u011bk OK1DFC a Frantovi tak zbylo v\u00edce \u010dasu na pl\u00e1novan\u00e1 m\u011b\u0159en\u00ed \u0161umov\u00fdch \u010d\u00edsel.
\n V sobotu po osm\u00e9 hodin\u011b rann\u00ed jsme se dostavili na sn\u00eddani a mus\u00edm uznat, \u017ee proti zku\u0161enostem z p\u0159edchoz\u00edch let prob\u011bhla za rozumn\u00e9 rychlosti obsluhy. Po t\u00e9 ji\u017e n\u00e1sledoval p\u0159esun do klubovny v prvn\u00edm pat\u0159e, kde soubor p\u0159edn\u00e1\u0161ek zah\u00e1jil Franta OK1CA rozd\u00e1n\u00edm diplom\u016f z UHF\/MW contestu 2001. Po t\u00e9 n\u00e1sledovala p\u0159edn\u00e1\u0161ka Zde\u0148ka OK1DFC o provozu EME a nadch\u00e1zej\u00edc\u00ed EME konferenci<\/a>, kter\u00e1 se uskute\u010dn\u00ed v srpnu Praze. Na konferenci by se m\u011bla objevit cel\u00e1 radioamat\u00e9rsk\u00e1 \u0161pi\u010dka zab\u00fdvaj\u00edc\u00ed se touto oblast\u00ed a snad se poprv\u00e9 poda\u0159\u00ed zajistit \u00fa\u010dast v\u0161ech aktivn\u00edch kontinent\u016f.
\n<\/a> Jako dal\u0161\u00ed p\u0159i\u0161el p\u0159isp\u011bt sv\u00fdmi znalostmi a \u00fasp\u011bchy Pep\u00edk OK1UWA, kter\u00e9mu se poda\u0159ilo nav\u00e1zat prvn\u00ed OKJA QSO v p\u00e1smu 3 cm. Jeho p\u0159edn\u00e1\u0161ka byla pojata jako n\u00e1vnada na dal\u0161\u00ed z\u00e1jemce o tento zat\u00edm bohu\u017eel m\u00e1lo roz\u0161\u00ed\u0159en\u00fd a vyu\u017e\u00edvan\u00fd druh provozu a i m\u011b nal\u00e1kala, \u017ee b\u011bhem v\u00edkendu nam\u00ed\u0159\u00edm sv\u00e9 ant\u00e9ny k m\u011bs\u00edci alespo\u0148 na poslech. Pepa zde p\u0159edvedl i za\u0159\u00edzen\u00ed za pomoc\u00ed kter\u00e9ho se mu spojen\u00ed poda\u0159ilo nav\u00e1zat a s v\u00fdkonem 35W z tranzistor\u016f se jedn\u00e1 opravdu o mistrovsk\u00e9 konstrukt\u00e9rsk\u00e9 d\u00edlo.
\n Po kr\u00e1tk\u00e9 p\u0159est\u00e1vce p\u0159i\u0161el Pep\u00edka vyst\u0159\u00eddat Zden\u011bk OK1DFC se svou koncepc\u00ed transverotu pro mikrovlnn\u00e1 p\u00e1sma 13, 9 a 6 cm. Jako c\u00edl si Zden\u011bk stanovil mo\u017enost vyu\u017eit\u00ed v EME i tropo provozu prost\u0159ednictv\u00edm jednoho koncov\u00e9ho stupn\u011b realizovan\u00e9ho koncovou elektronkou s postupnou vlnou a jedn\u00e9 parabolick\u00e9 ant\u00e9ny se speci\u00e1ln\u00edm oza\u0159ova\u010dem pro tato t\u0159i p\u00e1sma. Nyn\u00ed ji\u017e n\u00e1sledoval ob\u011bd, kter\u00fd jako sn\u00eddan\u011b prob\u011bhl za neobvykl\u00e9 rychlosti obsluhy a tak nebylo nutn\u00e9 cestovat do sousedn\u00ed vesni\u010dky do hosp\u016fdky.
\n <\/a>Po ob\u011bd\u011b n\u00e1s p\u0159i\u0161el Mirek OK2AQK sezn\u00e1mit s novinkami okolo AO-40 a o rizik\u00e1ch a mo\u017enostech pl\u00e1novan\u00e9ho p\u0159echodu do t\u0159\u00edose stabilizovan\u00e9 polohy. D\u00e1le se rozhovo\u0159il o mo\u017enosti d\u00e1lkov\u00e9 spr\u00e1vy dru\u017eice prost\u0159ednictv\u00edm internetu a o budoucnosti dal\u0161\u00ed radioamat\u00e9rsk\u00e9 dru\u017eicov\u00e9 komunikace. Na z\u00e1v\u011br n\u00e1s sezn\u00e1mil s nov\u011b pl\u00e1novan\u00fdmi digit\u00e1ln\u00edmi druhy provozu s \u010dasov\u00fdm multiplexem (vzd\u00e1len\u011b podobn\u00fd syst\u00e9mu GSM na jednom kan\u00e1le), kter\u00fd bude mo\u017en\u00e1 nasazen na n\u011bkterou z budouc\u00edch dru\u017eic.
\n Mirka pak vyst\u0159\u00eddal Ruda OK2ZZ s informace o prefesion\u00e1ln\u00edm p\u0159\u00edstupu k n\u00e1vrhu ant\u00e9n a oza\u0159ova\u010d\u016f nejen pro radioamat\u00e9rsk\u00e1 p\u00e1sma. Na m\u00edst\u011b n\u00e1m p\u0159edvedl probl\u00e9m s rozlad\u011bn\u00edm ant\u00e9ny v d\u016fsledku n\u00e1mrazy a sezn\u00e1mil n\u00e1s s n\u00e1roky kladen\u00fdmi jak na b\u011b\u017en\u00e9 ant\u00e9ny, tak i na oza\u0159ova\u010de parabolick\u00fdch ant\u00e9n.
\n Po kr\u00e1tk\u00e9 p\u0159est\u00e1vce se ji\u017e do \u010dela postavil Ondra OK1CDJ, kter\u00fd jako pr\u016fkopn\u00edk v roce 2000 p\u0159i\u0161el s koncepc\u00ed elektronick\u00e9ho vyhodnocen\u00ed VKV z\u00e1vod\u016f v r\u00e1mci OK. Byly zde nast\u00edn\u011bny nej\u010dast\u011bj\u0161\u00ed probl\u00e9my s vypl\u0148ov\u00e1n\u00edm elektronick\u00fdch den\u00edk\u016f a dal\u0161\u00ed zaj\u00edmav\u00e9 informace ke kter\u00fdm se rozpoutala rozs\u00e1hl\u00e1 diskuze. Zapojil se do n\u00ed tak\u00e9 Karel OK2ZI, kter\u00fd p\u0159isl\u00edbil prosazen\u00ed p\u0159ednesen\u00fdch n\u00e1vrh\u016f do „V\u0161eobecn\u00fdch podm\u00ednek z\u00e1vod\u016f na VKV“<\/a>, podle kter\u00fdch \u010cRK vyhla\u0161uje sv\u00e9 z\u00e1vody. Za nejzaj\u00edmav\u011bj\u0161\u00ed informace bych pova\u017eoval zve\u0159ejn\u011bn\u00ed z\u00e1vodn\u00edch den\u00edk\u016f v\u0161ech sout\u011b\u017e\u00edc\u00edch stanic a nebo p\u0159\u00edjem den\u00edku v pap\u00edrov\u00e9 form\u011b pouze od stanic, kter\u00e9 jej vypln\u00ed ru\u010dn\u011b.
\n Po t\u00e9to zaj\u00edmav\u00e9 debat\u011b n\u00e1sledovala p\u0159edn\u00e1\u0161ka Ras\u0165i OM6AA o stanoven\u00ed priorit p\u0159i konstrukci modern\u00edho transvertoru pro VKV p\u00e1sma s vysokou \u0161\u00ed\u0159kou p\u00e1sma. V z\u00e1v\u011bru bylo nast\u00edn\u011bno, jak ji\u017e p\u0159i kvalitn\u00ed konstrukci nar\u00e1\u017e\u00edme i na probl\u00e9my s \u0161\u00ed\u0159kou p\u00e1sma vlastn\u00edho MF KV za\u0159\u00edzen\u00ed (By\u0165 i kvalitn\u00edho).
\n <\/a> Po teoretick\u00e9m rozbotu n\u00e1sledoval Vl\u00e1\u010fa OK1VPZ se sv\u00fdm rozborem konstrukc\u00ed koncov\u00fdch stup\u0148\u016f pro p\u00e1smo 23 cm, kde nast\u00ednil probl\u00e9my, kter\u00e9 vznikaj\u00ed s neutralizac\u00ed elektronky GI-7B p\u0159i pou\u017eit\u00ed v amat\u00e9rsk\u00fdch p\u00e1smech. P\u0159ednesl zde zaj\u00edmavou hypot\u00e9zu o mo\u017enostech neutralizace prost\u0159ednictv\u00edm otvor\u016f slou\u017e\u00edc\u00edch sekund\u00e1rn\u011b tak\u00e9 pro chlazen\u00ed katody.
\n Jako z\u00e1v\u011bre\u010dnou \u0159e\u010d p\u0159i\u0161el pron\u00e9st Franta OK1CA, kter\u00fd s Jirkou OK1DCI shrnul leto\u0161n\u00ed m\u011b\u0159en\u00ed dovezen\u00fdch za\u0159\u00edzen\u00ed. Jako zaj\u00edmavost jsem si zvolil p\u0159edzesilova\u010d Honzy OK1VCO z pou\u017eit\u00fdm tranzistorem z GSM vy\u0159azen\u00e9 technologie Siemens, kter\u00fd dos\u00e1hl vynikaj\u00edc\u00edch parametr\u016f : Zisku 23 dB, \u0161umov\u00e9ho \u010d\u00edsla 0,55 dB a IP3=+7dBm !!! Proto\u017ee je mo\u017en\u00e9 m\u00edsto pou\u017eit\u00e9ho nezn\u00e1m\u00e9ho tranzistoru po\u017e\u00edt i jin\u00e9 b\u011b\u017en\u011b dostupn\u00e9 typy, v nejbli\u017e\u0161\u00ed dob\u011b V\u00e1m zde p\u0159inesu konstruk\u010dn\u00ed n\u00e1vod jak za\u010d\u00edt s p\u0159estavbou za\u0159\u00edzen\u00ed do na\u0161ich stanicemi zahu\u0161t\u011bn\u00fdch kon\u010din.
\n Na z\u00e1v\u011br n\u00e1s kluci v \u010dele s Jirkou OK1DCI p\u0159i\u0161li sezn\u00e1mit se stavbou unik\u00e1tn\u00ed 6m parabolick\u00e9 ant\u00e9ny pro EME, kterou ned\u00e1vno z\u00edskali pro radioklub OK1KIR.<\/p>\n

Pokud si chete prohl\u00e9dnou v\u0161echny mnou po\u0159\u00edzen\u00e9 fotografie<\/a>, m\u016f\u017eete zde. Dal\u0161\u00ed informace ze setk\u00e1n\u00ed popsal Vl\u00e1\u010fa OK1VPZ na serveru OK2KKW<\/a> a Radek OK2XDX<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

Pokud se V\u00e1m nepoda\u0159ilo se o v\u00edkendu pod\u00edvat do Studnice u Nov\u00e9ho M\u011bsta na Morav\u011b, p\u0159in\u00e1\u0161\u00edm V\u00e1m stru\u010dn\u00fd pr\u016f\u0159ez p\u0159edn\u00e1\u0161kami, kter\u00e9 zde prob\u011bhly. Na okraj snad jen to, \u017ee cel\u00fd v\u00edkend byl prov\u00e1zen mlhav\u00fdm po\u010das\u00edm a tak se v podstat\u011b v\u0161e odehr\u00e1lo uvnit\u0159 chaty TJ Studnice. Jako ka\u017edoro\u010dn\u011b jsme se vypravili s klukama z OK1KIM…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[2],"tags":[],"class_list":["post-203","post","type-post","status-publish","format-standard","hentry","category-radioamateri"],"_links":{"self":[{"href":"https:\/\/satelit.cz\/index.php?rest_route=\/wp\/v2\/posts\/203","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/satelit.cz\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/satelit.cz\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/satelit.cz\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/satelit.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=203"}],"version-history":[{"count":0,"href":"https:\/\/satelit.cz\/index.php?rest_route=\/wp\/v2\/posts\/203\/revisions"}],"wp:attachment":[{"href":"https:\/\/satelit.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=203"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/satelit.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=203"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/satelit.cz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=203"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}