{"id":393,"date":"2019-02-02T10:25:30","date_gmt":"2019-02-02T09:25:30","guid":{"rendered":"http:\/\/www.is0pgf.it\/?page_id=393"},"modified":"2023-08-26T16:40:53","modified_gmt":"2023-08-26T14:40:53","slug":"is0pgf-log-periodica-loop-yagi","status":"publish","type":"page","link":"https:\/\/www.is0pgf.it\/?page_id=393","title":{"rendered":"Le mie Antenne"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"393\" class=\"elementor elementor-393\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-41d4f61 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"41d4f61\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-7b19f22\" data-id=\"7b19f22\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-fe9d241 elementor-widget elementor-widget-text-editor\" data-id=\"fe9d241\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>HF: Dipolo monobanda autocostruito per i 40mt (7Mhz) r.o.s 1.2, che accordo anche in altre bande<\/p><p><b>70Mhz (4m): <\/b>Antenna LFA-Q 3ele<\/p><p><strong>VHF:<\/strong> Antenna log-periodic televisiva comprata da Bricoman, ho smontato tutti gli elementi e posizionato 8 elementi tagliati e spaziati per la gamma 144-146mhz, la misura del ros \u00e8 stata eseguita con un Daiwa CN720II e uno strumento Gencomm GC724B con un risultato quasi piatto sui 2mhz di larghezza di banda.<br \/>Ho utilizzato barre filettate da 4mm e rifatto i fori alla giusta spaziatura tra un elemento e l&#8217;altro.<br \/>Il guadagno simulato con il software \u00e8 di circa 9,2dBi, il Boom \u00e8 1.15mt compresa la staffa di fissaggio.<\/p><p><strong>UHF:<\/strong> Antenna log-periodic televisiva comprata da Bricoman, ho smontato tutti gli elementi e posizionato 14 elementi tagliati e spaziati per la gamma 430-438mhz, la misura del ros \u00e8 stata eseguita con un Daiwa CN720II e uno strumento Gencomm GC724B con un risultato quasi piatto sugli 8mhz di larghezza di banda.<br \/>Ho utilizzato elementi in alluminio originali recuperati anche dalla realizzazione VHF e rifatto i fori alla giusta spaziatura tra un elemento e l&#8217;altro.<br \/>Il guadagno simulato con il software \u00e8 di circa 15,6dBi, il Boom \u00e8 1.13mt compresa la staffa di fissaggio.<\/p><p><strong>1.2Ghz (SHF)*<\/strong>: Antenna Loop-Yagi realizzata con un boom di 1.2mt compresa la staffa di fissaggio delle dimensioni di 15x15mm, sono presenti 12 direttori circolari dopo Dipolo e riflettore, tutti in alluminio fissati al boom con una vite e dado da 3mm.<br \/>Il dipolo \u00e8 realizzato con una striscia di ottone e cavo semirigido UT141, non si pu\u00f2 utilizzare alluminio in quanto bisogna saldare la calza del cavo al fissaggio del boom e alla parte superiore del cavo coassiale, le misure sono millimetriche.<\/p><p><strong>* SHF<\/strong>&#8211;In realt\u00e0 le SHF nello spettro Radio iniziano da 3Ghz e terminano a 30Ghz ma nel mondo Radioamatoriale capitava e capita ancora di trovare la dicitura SHF per l&#8217;uscita dei 1200.<br \/>Di sicuro per non confondarla con l&#8217;uscita UHF negli apparati multibanda.<\/p><p><strong>NUOVO<\/strong> Ricetrasmettitore ICOM IC-9700 VHF \/ UHF \/ SHF<br \/>Advantec S.r.l. \u2013 distributore ufficiale ICOM per l\u2019Italia \u2013 ha il piacere di annunciare che Icom Inc. ha rilasciato ulteriori dettagli sull\u2019uscita dell\u2019innovativo IC-9700, ricetrasmettitore SDR (Software Defined Radio) All-Mode per le bande VHF (2m) \/ UHF (70cm) \/ SHF (23cm). L\u2019apparato \u00e8 stato progettato con lo stesso concetto del popolare IC-7300 per le bande HF (160m-10m) e VHF (6m e 4m) e ne riprende lo stesso form-factor.<br \/><a href=\"http:\/\/www.is0pgf.it\/wp-content\/uploads\/2019\/02\/icom_ic-9700_538x218-1.jpg\"><img decoding=\"async\" class=\"alignnone size-medium wp-image-398\" src=\"http:\/\/www.is0pgf.it\/wp-content\/uploads\/2019\/02\/icom_ic-9700_538x218-1-300x122.jpg\" alt=\"\" width=\"300\" height=\"122\" srcset=\"https:\/\/www.is0pgf.it\/wp-content\/uploads\/2019\/02\/icom_ic-9700_538x218-1-300x122.jpg 300w, https:\/\/www.is0pgf.it\/wp-content\/uploads\/2019\/02\/icom_ic-9700_538x218-1.jpg 538w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-84caab1 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"84caab1\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-6dc86f2\" data-id=\"6dc86f2\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-e403efd elementor-widget elementor-widget-image\" data-id=\"e403efd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"474\" height=\"407\" src=\"https:\/\/www.is0pgf.it\/wp-content\/uploads\/2023\/08\/70Mhz-LFA-Q-3ele.jpg\" class=\"attachment-large size-large wp-image-2101\" alt=\"\" srcset=\"https:\/\/www.is0pgf.it\/wp-content\/uploads\/2023\/08\/70Mhz-LFA-Q-3ele.jpg 721w, https:\/\/www.is0pgf.it\/wp-content\/uploads\/2023\/08\/70Mhz-LFA-Q-3ele-300x258.jpg 300w\" sizes=\"(max-width: 474px) 100vw, 474px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">3elements LFA-Q<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>HF: Dipolo monobanda autocostruito per i 40mt (7Mhz) r.o.s 1.2, che accordo anche in altre bande 70Mhz (4m): Antenna LFA-Q 3ele VHF: Antenna log-periodic televisiva comprata da Bricoman, ho smontato tutti gli elementi e posizionato 8 elementi tagliati e spaziati per la gamma 144-146mhz, la misura del ros \u00e8 stata eseguita con un Daiwa CN720II &hellip; <a href=\"https:\/\/www.is0pgf.it\/?page_id=393\" class=\"more-link\">Continua la lettura di <span class=\"screen-reader-text\">Le mie Antenne<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":233,"parent":153,"menu_order":1,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-393","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - 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