{"id":3911,"date":"2024-09-15T22:27:15","date_gmt":"2024-09-15T20:27:15","guid":{"rendered":"https:\/\/ok5cav.cz\/?p=3911"},"modified":"2024-09-15T22:32:21","modified_gmt":"2024-09-15T20:32:21","slug":"pouziti-js8call-pro-tisnovou-komunikaci","status":"publish","type":"post","link":"https:\/\/ok5cav.cz\/index.php\/2024\/09\/15\/pouziti-js8call-pro-tisnovou-komunikaci\/","title":{"rendered":"Pou\u017eit\u00ed JS8Call pro t\u00eds\u0148ovou komunikaci"},"content":{"rendered":"\n<p>Digit\u00e1ln\u00ed p\u0159enosy v JS8Call (https:\/\/js8call.com) nejsou mo\u017en\u00e1 dokonal\u00e9, ale uva\u017eovala o nich komise pro t\u00eds\u0148ovou komunikaci IARU R1. Oproti dokonalej\u0161\u00edmu programu VARAC a protokolu VARA m\u00e1 dv\u011b v\u00fdhody:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>nemus\u00ed se za n\u011bj platit<\/li>\n\n\n\n<li>existuj\u00ed implementace i pro jin\u00e9 opera\u010dn\u00ed syst\u00e9my ne\u017e Windows<\/li>\n<\/ul>\n\n\n\n<p>Pro \u00fa\u010dely skupiny OK-RTS nyn\u00ed testujeme spojen\u00ed JS8Call v p\u00e1smu 7 MHz. Chci pod\u011bkovat Luk\u00e1\u0161ovi, OK1RE, a Martinovi, OK1MDX, \u017ee tento druh provozu aktivn\u011b testuj\u00ed, a Brunovi, OM1BAT, kter\u00fd za\u010dal navazovat spojen\u00ed JS8 okam\u017eit\u011b po skon\u010den\u00ed ned\u011bln\u00edho ARES TESTu ve slovensk\u00e9 DMR skupin\u011b TG23112. Douf\u00e1m, \u017ee se taky co nejd\u0159\u00edv p\u0159id\u00e1te!<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">N\u011bkolik z\u00e1kladn\u00edch informac\u00ed<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>V\u017edy, pokud je to mo\u017en\u00e9, poslouch\u00e1 stanice radioklubu OK1RAA a p\u0159ij\u00edm\u00e1 zpr\u00e1vy. <\/li>\n\n\n\n<li>Pravideln\u00e9 okno, kdy je p\u0159\u00edle\u017eitost nav\u00e1zat p\u0159\u00edm\u00e9 spojen\u00ed, je denn\u011b ve 20:30 m\u00edstn\u00edho \u010dasu (v l\u00e9t\u011b tedy 1830 UTC, v zim\u011b 1930 UTC). \u010cas je zat\u00edm experiment\u00e1ln\u00ed, jedn\u00edm z \u00fakol\u016f je ov\u011b\u0159it, zda je tento \u010das vhodn\u00fd pro pravideln\u00e1 spojen\u00ed.<\/li>\n\n\n\n<li>Zkuste v libovoln\u00e9m \u010dase OK1RAA kontaktovat zp\u016fsobem, kdy m\u016f\u017eete dostat automatickou odpov\u011b\u010f, tedy:\n<ul class=\"wp-block-list\">\n<li>Vy\u0161lete \u017e\u00e1dost o heartbeat. Pokud jste v OK1RAA sly\u0161et, stanice odpov\u00ed.<\/li>\n\n\n\n<li>M\u016f\u017eete vyslat \u017e\u00e1dost o info: OK1RAA INFO?<\/li>\n\n\n\n<li>M\u016f\u017eete se dot\u00e1zat, zda jsou pro v\u00e1s na stanici n\u011bjak\u00e9 zpr\u00e1vy: OK1RAA QUERY MSGS<\/li>\n\n\n\n<li>M\u016f\u017eete se dot\u00e1zat, zda a kdy stanice sly\u0161ela jinou stanici: OK1RAA QUERY CALL &lt;vola\u010dka><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>V libovoln\u00e9m \u010dase mi m\u016f\u017eete p\u0159es OK1RAA poslat zpr\u00e1vu: OK1RAA MSG TO: OK4RM &lt;text zpr\u00e1vy>. Nesed\u00edm u r\u00e1dia nep\u0159etr\u017eit\u011b, ale pokus\u00edm se aspo\u0148 3x t\u00fddn\u011b zpr\u00e1vy zkontrolovat.<\/li>\n\n\n\n<li>Podm\u00ednky pro spojen\u00ed JS8Call v p\u00e1smu 7 MHz aspo\u0148 s OK1RAA jsou zat\u00edm dobr\u00e9 po cel\u00fd den, aspo\u0148 pro OK1MDX, OK1RE a OK4RM.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Dal\u0161\u00ed doporu\u010den\u00ed a pravidla<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Nikdy <\/strong>nem\u011bjte oboustrann\u00e9 spojen\u00ed v offsetu 500-1000 Hz. Tento segment je vyhra\u017een pro heartbeat! Je to neslu\u0161n\u00e9, podobn\u011b jako jezdit na kole nebo na motorce po chodn\u00edku mezi chodci. Tento segment m\u00e1 p\u0159esn\u011b vymezen\u00fd \u00fa\u010del (na vodop\u00e1du je vyzna\u010den \u017elutou \u010d\u00e1rou &#8211; stejn\u011b jako pod\u00e9ln\u00e1 dopravn\u00ed zna\u010dka &#8222;z\u00e1kaz st\u00e1n\u00ed&#8220;). <\/li>\n\n\n\n<li>Relace JS8Call je pom\u011brn\u011b dlouh\u00e1. Na rozd\u00edl od FT8 se nep\u0159en\u00e1\u0161\u00ed jen zna\u010dky, tak\u017ee ka\u017ed\u00e1 relace je rozlo\u017eena do n\u011bkolika paket\u016f. V re\u017eimu &#8222;Normal&#8220; je perioda paketu 15 sekund a tak p\u0159enos i pom\u011brn\u011b kr\u00e1tk\u00e9 zpr\u00e1vy m\u016f\u017ee trvat a\u017e jednu minutu. V\u017edycky vy\u010dkejte, a\u017e uvid\u00edte znak ozna\u010duj\u00edc\u00ed konec zpr\u00e1vy (obvykle vypad\u00e1 jako koso\u010dtverec).<\/li>\n\n\n\n<li>Proto, pokud odklepnete text va\u0161\u00ed odpov\u011bdi je\u0161t\u011b ne\u017e skon\u010d\u00ed vys\u00edl\u00e1n\u00ed protistanice, neusly\u0161\u00edte konec (nebo kus) zpr\u00e1vy a zrovna tak protistanice neusly\u0161\u00ed va\u0161i zpr\u00e1vu, proto\u017ee zrovna vys\u00edl\u00e1.<\/li>\n\n\n\n<li>Krom\u011b toho, pokud neodklepnete text sv\u00e9 odpov\u011bdi ihned po skon\u010den\u00ed p\u0159ij\u00edman\u00e9 zpr\u00e1vy a program tedy nem\u016f\u017ee za\u010d\u00edt vys\u00edlat hned, za\u010dne vys\u00edlat a\u017e v dal\u0161\u00ed period\u011b po odklepnut\u00ed zpr\u00e1vy kl\u00e1vesou Enter v souladu s rastrem zvolen\u00e9 rychlosti (30, 15, 10 nebo 7,5 sekundy). Mezi posledn\u00edm paketem p\u0159ijat\u00e9 zpr\u00e1vy a za\u010d\u00e1tkem vys\u00edl\u00e1n\u00ed odpov\u011bdi tedy m\u016f\u017ee b\u00fdt pauza, a pokud protistanice teprve formuluje odpov\u011b\u010f, ta pauza m\u016f\u017ee trvat i d\u00e9le. Po skon\u010den\u00ed vys\u00edl\u00e1n\u00ed, pokud o\u010dek\u00e1v\u00e1m odpov\u011b\u010f, tedy \u010dek\u00e1m tak dlouho dokuse se protistanice znovu neozve. Minim\u00e1ln\u011b by to ale m\u011bly b\u00fdt t\u0159i periody.<\/li>\n\n\n\n<li>Z v\u00fd\u0161e uveden\u00fdch d\u016fvod\u016f je pot\u0159eba, aby komunikace byla maxim\u00e1ln\u011b stru\u010dn\u00e1. Pou\u017e\u00edvejte tedy co nej\u010dast\u011bji zkratky a Q k\u00f3dy. Tak\u00e9 je nutn\u00e9, aby v p\u0159\u00edpad\u011b skute\u010dn\u00e9 t\u00eds\u0148ov\u00e9 komunikace nezdr\u017eovaly zdvo\u0159ilostn\u00ed fr\u00e1ze a zbyte\u010dn\u00e1 slova. Nap\u0159\u00edklad:<\/li>\n\n\n\n<li>M\u00edsto &#8222;ODKUD VYSILAS?&#8220; (2 periody) => &#8222;QTH?&#8220; (1 perioda). Podobn\u011b je nutno zach\u00e1zet se v\u0161emi dostupn\u00fdmi Q-k\u00f3dy.<\/li>\n\n\n\n<li>V t\u00eds\u0148ov\u00e9 komunikaci vynech\u00e1vejte slova jako PLS (zabere p\u016fl periody) nebo dokonce PROSIM a a\u0165 v\u00e1s v\u016fbec nenapadne ps\u00e1t v\u011bci jako &#8222;ALE OPRAVDU NENI ZAC KAMARADE!&#8220; (t\u0159i periody). P\u0159edpokl\u00e1dejme, \u017ee jsme v\u016f\u010di sob\u011b maxim\u00e1ln\u011b zdvo\u0159il\u00ed i kdy\u017e to nen\u00ed v textu, a pro stav, kdy bychom se bez t\u011bchto fr\u00e1z\u00ed neobe\u0161li, bude pot\u0159eba adaptovat n\u011bkter\u00e9 z existuj\u00edc\u00edch zkratek. (N\u00e1vrh: poj\u010fme nav\u00e1zat na dvoum\u00edstn\u00e9 \u010d\u00edseln\u00e9 k\u00f3dy 73, 88, 44, 72 a podobn\u011b).<\/li>\n\n\n\n<li>Pokud je dobr\u00e1 sly\u0161itelnost mezi ob\u011bma stanicemi a p\u00e1smo pro JS8 nen\u00ed p\u0159epln\u011bn\u00e9, pou\u017e\u00edvejte p\u0159i spojen\u00ed nejvy\u0161\u0161\u00ed mo\u017enou rychlost.<\/li>\n\n\n\n<li>Jeliko\u017e <strong>vy\u0161\u0161\u00ed rychlost<\/strong> znamen\u00e1 i <strong>v\u011bt\u0161\u00ed zabranou \u0161\u00ed\u0159ku p\u00e1sma<\/strong>, pokud pou\u017e\u00edv\u00e1te Turbo (\u0161\u00ed\u0159ka p\u00e1sma 160 Hz), sna\u017ete se vys\u00edlat na offsetu 2000 Hz nebo v\u00fd\u0161. Toto je n\u00e1vrh, ve skupin\u011b si mus\u00edme odsouhlasit, zda je to vhodn\u00e9 pravidlo a taky jak vysoko je\u0161t\u011b m\u016f\u017eeme j\u00edt, aby n\u011bkterou ze stanic neomezovala \u0161\u00ed\u0159ka p\u00e1sma filtru. Mysl\u00edm, \u017ee 2400 Hz by je\u0161t\u011b pro v\u0161echny transceivery m\u011blo b\u00fdt dosa\u017eiteln\u00e9, v\u00fd\u0161 budou mo\u017en\u00e1 fungovat jen SDR transceivery a p\u0159ij\u00edma\u010de a krom\u011b toho n\u011bkde kolem 7081 mysl\u00edm za\u010d\u00edn\u00e1 &#8222;expedi\u010dn\u00ed segment&#8220; FT8, kter\u00fd by n\u00e1s mohl ru\u0161it.<\/li>\n\n\n\n<li>Obdobn\u011b bych si dovolil p\u0159edb\u011b\u017en\u011b navrhnout, aby se \u00fazkop\u00e1smov\u00e1 (pomal\u00e1) t\u00eds\u0148ov\u00e1 komunikace (rychlosti SLOW &#8211; 25 Hz a NORMAL &#8211; 50 Hz) odehr\u00e1vala v segmentu 1000-1250 Hz. To je kv\u016fli tomu, abychom v p\u0159\u00edpad\u011b skute\u010dn\u00e9 t\u00eds\u0148ov\u00e9 komunikace mohli smyslupln\u011b \u017e\u00e1dat o uvoln\u011bn\u00ed tohoto \u00fazk\u00e9ho segmentu od b\u011b\u017en\u00e9ho provozu.<\/li>\n\n\n\n<li>Stanice OK1RAA je standardn\u011b nastavena na rychlost Normal (perioda 15 s) a vys\u00edl\u00e1 s offsetem kolem 1050 Hz. Mysl\u00edm, \u017ee obvykle vys\u00edl\u00e1 heartbeat ka\u017ed\u00fdch 15 minut, tak\u017ee pokud si v hamshacku ud\u011bl\u00e1te medita\u010dn\u00ed p\u016flhodinku, m\u011bli byste na ni narazit.<\/li>\n<\/ul>\n\n\n\n<p>To je zat\u00edm v\u0161e, budu se t\u011b\u0161it na spojen\u00ed na JS8 i na p\u0159\u00edpadn\u00e9 podn\u011bty v na\u0161\u00ed telegramov\u00e9 skupin\u011b.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Digit\u00e1ln\u00ed p\u0159enosy v JS8Call nejsou mo\u017en\u00e1 dokonal\u00e9, oproti VARACu a protokolu VARA m\u00e1 dv\u011b v\u00fdhody: je zdarma (a opensource) a funguje i na Linuxu, nejen ve Windows.<br \/>\nNechete se p\u0159idat k pravideln\u00fdm test\u016fm?<span class=\"more-link\"><a href=\"https:\/\/ok5cav.cz\/index.php\/2024\/09\/15\/pouziti-js8call-pro-tisnovou-komunikaci\/\">\u010ct\u011bte d\u00e1le&#8230;<\/a><\/span><\/p>\n","protected":false},"author":3,"featured_media":1772,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[88],"tags":[],"class_list":["entry","author-ok4rm","has-excerpt","post-3911","post","type-post","status-publish","format-standard","has-post-thumbnail","category-ok-ares"],"_links":{"self":[{"href":"https:\/\/ok5cav.cz\/index.php\/wp-json\/wp\/v2\/posts\/3911"}],"collection":[{"href":"https:\/\/ok5cav.cz\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ok5cav.cz\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ok5cav.cz\/index.php\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/ok5cav.cz\/index.php\/wp-json\/wp\/v2\/comments?post=3911"}],"version-history":[{"count":2,"href":"https:\/\/ok5cav.cz\/index.php\/wp-json\/wp\/v2\/posts\/3911\/revisions"}],"predecessor-version":[{"id":3913,"href":"https:\/\/ok5cav.cz\/index.php\/wp-json\/wp\/v2\/posts\/3911\/revisions\/3913"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ok5cav.cz\/index.php\/wp-json\/wp\/v2\/media\/1772"}],"wp:attachment":[{"href":"https:\/\/ok5cav.cz\/index.php\/wp-json\/wp\/v2\/media?parent=3911"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ok5cav.cz\/index.php\/wp-json\/wp\/v2\/categories?post=3911"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ok5cav.cz\/index.php\/wp-json\/wp\/v2\/tags?post=3911"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}