Monga gawo lofunika kwambiri la kulumikizana opanda zingwe, ntchito yayikulu ya mlongoti ndikuwunikira ndikulandila mafunde a wailesi.Ntchito yake ndikusintha mafunde amagetsi kuchokera pa wailesi yakanema kukhala voteji yama siginecha kupita ku ma frequency apamwamba.
Momwe mlongoti wa pa TV umagwirira ntchito ndikuti pamene mafunde a electromagnetic akupita patsogolo, amagunda mlongoti wachitsulo, amadula chingwe cha maginito, ndipo amapanga mphamvu ya electromotive, yomwe ndi magetsi amagetsi.
Monga gawo lofunikira la machitidwe oyankhulana, ntchito ya antenna imakhudza mwachindunji ndondomeko ya njira yolankhulirana.Wogwiritsa ntchitoyo ayenera kuyang'anitsitsa momwe amagwirira ntchito posankha mlongoti.
Chimodzi mwa zizindikiro zazikulu za mlongoti ndi kupindula, komwe kumapangidwa ndi njira yoyendetsera kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe kake kamangidwe kachitidwe ka malo owulutsira mafunde a wailesi.Mwachidule, pansi pazikhalidwe zomwezo, kupindula kwakukulu, ndipamene mtunda wofalitsa mafunde a wailesi ukukwera.Nthawi zambiri, mlongoti wapansi umatenga mlongoti wopeza ndalama zambiri, ndipo mlongoti wa siteshoni yam'manja umatenga mlongoti wopeza wotsika.
Mlongoti wolandira TV nthawi zambiri umakhala wa mlongoti (mlongoti wolandira satelayiti ndi mlongoti wa pamwamba), malinga ndi kuchuluka kwa ma frequency omwe amalandila ma frequency apamwamba amatha kugawidwa mu VHF, mlongoti wa UHF ndi mlongoti wanjira zonse;Malinga ndi kuchuluka kwa ma frequency band ya mlongoti wolandila, imagawidwa kukhala mlongoti wanjira imodzi ndi mlongoti wafupipafupi.Malinga ndi kapangidwe kake, imatha kugawidwa kukhala mlongoti wowongolera, mlongoti wa mphete, mlongoti wa fishbone, log periodic antenna ndi zina zotero.
Pulogalamu ya TV yotseguka yolandilidwa ndi makina a TV TV makamaka imaphatikizapo magulu awiri afupipafupi: ⅵ (channel 1-4) ndi ⅷ (channel 6-12) mu VHF band ndi UIV (channel 13-24) ndi UV (channel 25- 48) mu gulu la UHF.Mu gulu la ma frequency a VHF, mlongoti wapadera wa tchanelo womwe umalandira chizindikiro cha TV panjira inayake nthawi zambiri umasankhidwa, ndipo malo olandirira bwino kwambiri amasankhidwa kuti ayike, kuti akhale ndi zabwino zambiri, kusankha bwino komanso mayendedwe amphamvu.Komabe, mlongoti wa partial-band womwe umagwiritsidwa ntchito mu ⅵ ndi ⅷ ndi mlongoti wamtundu uliwonse womwe umagwiritsidwa ntchito mu VHF uli ndi ma frequency ochuluka komanso kupindula kochepa, komwe kumangoyenera kumakina ang'onoang'ono.Mu band ya frequency ya UHF, tinyanga ta ma frequency band nthawi zambiri zimatha kulandira mapulogalamu apawailesi yakanema amakanema angapo omwe amapatukana kwambiri.
Nthawi yotumiza: Aug-25-2022