{"id":1882,"date":"2012-09-26T14:43:30","date_gmt":"2012-09-26T12:43:30","guid":{"rendered":"http:\/\/oz7sac.dk\/?p=1882"},"modified":"2015-11-12T11:19:03","modified_gmt":"2015-11-12T09:19:03","slug":"1882","status":"publish","type":"post","link":"http:\/\/oz7sac.dk\/?p=1882","title":{"rendered":"Foredrag om LDMOS v. OZ1PIF Peter Frenning"},"content":{"rendered":"

\"DSC_9258\"<\/a>Tilf\u00f8jet den 26-09-2012
\naf Jan Anderschou<\/p>\n

Den 25. september havde vi i Silkeborg bes\u00f8g af OZ1PIF, der har bygget et 2M PA trin baseret p\u00e5 den nyeste teknologi fra Freescale, nemlig LDMOS transistoren.<\/p>\n

Peter gav en sp\u00e6ndende indf\u00f8ring i emnet, der gav svar p\u00e5 mange praktiske problemstillinger. F\u00f8rst skulle vi dog se en sp\u00e6ndende video, der satte sp\u00f8rgsm\u00e5let om robusthed p\u00e5 plads. Lysbuen dansede over sk\u00e6rmen og overbeviste os om, at her var tale om mere end almindelig HF transistorer.<\/p>\n

P\u00e5 disse frekvenser, et godt stykke over DC, er der mange udfordringer, der hurtigt viser sig som bl\u00e5 r\u00f8g, hvis man ikke tager sine forholdsregler. Peter forklarede beredvilligt og vi kunne h\u00f8ste mange gode tip, der forh\u00e5bentlig kan spare os for store overraskelser hvis vi (n\u00e5r vi) kaster os ud i et tilsvarende projekt.<\/p>\n

Og s\u00e5 blev l\u00e5get taget af kassen, s\u00e5 staldfiduserne kunne tages i \u00f8jensyn og foreviges til n\u00e6rmere hjemmestudium.<\/p>\n

Peter kunne ogs\u00e5 referere til links til diverse beskrivelser og kompoonenter, heraf nogle meget eksotiske, der \u00e5benbart ikke h\u00e6nger p\u00e5 tr\u00e6erne. Men de findes til geng\u00e6ld p\u00e5 Internettet, sammen med teflonprint og andre forn\u00f8denheder.<\/p>\n

http:\/\/www.frenning.dk\/OZ1PIF_HOMEPAGE\/LDMOS_SSPA.html<\/a>
\nhttp:\/\/www.rfham.com\/index.html?c85html<\/a>
\nhttp:\/\/www.f1te.org\/index.php?option=com_content&view=article&id=22&ItemID=48<\/a>
\nhttp:\/\/www.w6pql.com\/1_kw_2m_ldmos_amplifier.htm<\/a>
\nhttp:\/\/www.vk4dd.com\/index.php?option=com_content&view=article&id=26&ItemID=37<\/a>
\nhttp:\/\/cache.freescale.com\/files\/rf_if\/doc\/data_sheet\/MRFE6VP61K25H.pdf?pspll=1<\/a>
\nhttp:\/\/www.qsl.net\/f1jrd\/MRFE6VP61K25H.html<\/a>
\nhttp:\/\/dl.dropbox.com\/u\/11270449\/LDMOS%20SSPA.ppt<\/a><\/p>\n

Tak til Peter for et sp\u00e6ndende og relevant foredrag for eksperimenterende radioamat\u00f8rer.<\/p>\n

\"DSC_9271\"<\/a> \"DSC_9270\"<\/a> \"DSC_9296\"<\/a> \"DSC_9291\"<\/a> \"DSC_9277\"<\/a> \"DSC_9275\"<\/a> \"DSC_9278\"<\/a>
\n\"DSC_9268\"<\/a> \"DSC_9261\"<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Tilf\u00f8jet den 26-09-2012 af Jan Anderschou Den 25. september havde vi i Silkeborg bes\u00f8g af OZ1PIF, de\u2026<\/p>\n

L\u00e6s videre<\/span><\/i><\/a> <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"pgc_sgb_lightbox_settings":""},"categories":[4],"tags":[],"_links":{"self":[{"href":"http:\/\/oz7sac.dk\/index.php?rest_route=\/wp\/v2\/posts\/1882"}],"collection":[{"href":"http:\/\/oz7sac.dk\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/oz7sac.dk\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/oz7sac.dk\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/oz7sac.dk\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1882"}],"version-history":[{"count":4,"href":"http:\/\/oz7sac.dk\/index.php?rest_route=\/wp\/v2\/posts\/1882\/revisions"}],"predecessor-version":[{"id":2342,"href":"http:\/\/oz7sac.dk\/index.php?rest_route=\/wp\/v2\/posts\/1882\/revisions\/2342"}],"wp:attachment":[{"href":"http:\/\/oz7sac.dk\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1882"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/oz7sac.dk\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1882"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/oz7sac.dk\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1882"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}