Antennas kwa ma TV amadziwika kuyambira pachiyambi cha mbiri ya TV, chifukwa TV ilibe chizindikiro. Poyamba, anthu amagwiritsa ntchito zipangizo zamkati kapena zakunja zogwirizana ndi waya "bokosi". Njira yamakono yogwiritsira ntchito zizindikiro kuchokera ku nsanja yapailesi yakanema ilipo lero. Panthawi imodzimodziyo, chiwerengero chazitsulo n'chochepa kwambiri, ndipo khalidwe la chithunzicho limachoka nthawi zambiri.
Pofuna kuthetsa mavutowa, anthu potsiriza amapanga TV satana. Pachifukwa ichi, si analog, koma chizindikiro cha digito sichidutsa kupyola mu nyumba ya TV, koma kupyolera mu satellites akuuluka kudenga. Izi zakhala zosangalatsa zokwera mtengo, zomwe sizikupezeka kwa aliyense.
Kupitabe patsogolo sikunayimebe, ndipo pulogalamu yamapulogalamu yowonjezera yapamwamba idalengedwa - digito. Ikuphatikizapo njira zingapo zoyendetsera deta:
- kupyolera mu nyumba ya TV (padziko lapansi);
- kudzera mu chingwe (cable digital TV);
- kupyolera mu satellite;
- pogwiritsa ntchito intaneti pogwiritsa ntchito zipangizo zamakono (IP-TV).
Aliyense wa iwo amatha kupeza ma TV ambirimbiri apanyumba komanso akunja.
Dongosolo la Satellite la TV
Ngati kale, mbale ya satana inali yapamwamba ndipo tinkachitira nsanje "mbale" m'nyumba za anthu olemera, lero zowonjezera mtengo wawo, chifukwa cha televizioni yomwe inakhala yofikira kwambiri.
Ndalama yabwino ya satana kuti TV ikugwire njira zambiri. Mtengo wa chizindikiro ndi wabwino kwambiri. Ikhoza kuchepetsedwa ndi mphepo yazitali mwa mawonekedwe a mvula kapena chisanu.
Antenna yachinsinsi ya TV
Monga tanenera kale, pali njira zingapo zomwe zingasankhidwe pa televizioni yamtunduwu , motero, kwa aliyense wa iwo pali mtundu wa antenna. Kodi mungasankhe bwanji antenna pa TV, pamene chisankhocho chiri chachikulu? Mukhoza kuzigawa ndi magawo angapo. Kotero, mu malo a kukhazikitsa izo zingakhale:
- antenna zamkati;
- antennas akunja.
Malo, monga omveka kuchokera ku dzina, amaikidwa mkati mwa malo omwe amati otetezeka. M'midzi ndi midzi ya tchuthi la kumidzi, sikuyenera kuyembekezera zithunzi zoterezi kuchokera kuzinthu zoterezi. Kuti mukhale ndi khalidwe la chithunzi, ndibwino kugwiritsa ntchito zipangizo zamakono ndi zowonjezera pa TV.
Antennas akunja bwino mu magawo awo ndipo angagwiritsidwe ntchito kulikonse. Zimakhala zovuta kukhazikitsa chingwe choterechi, ndipo zina zimafunika, koma zotsatira zake ndi zoyenera.
Mwa mtundu wa chizindikiro chokulitsa, ziphuphu zimagawidwa mu:
- chokhalira;
- yogwira ntchito.
Manyowa amatha kulandira ndikulitsa chizindikiro chifukwa cha mawonekedwe awo. Panthawi imodzimodziyo, iwo alibe zinthu zowonjezereka - osati transistors kapena microchips. Chifukwa cha izi, zizindikiro zoterezi sizinapangitse phokoso kapena phokoso lina lololedwa mu chizindikiro chovomerezeka, chomwe chimaphatikizapo zipangizo zamagetsi. Komabe, sangathe nthawi zonse kulandira kulandiridwa kwapamwamba chifukwa cha zochepa zomwe angathe.
Antennas akulimbikitsitsa chizindikiro chomwe analandira osati kokha chifukwa cha mawonekedwe ake, komanso ndi makina opangidwa ndi zipangizo zamakono. Amadyetsa ziwalo zotere m'maunyolo. Ndiko komwe kumayambitsa kusokoneza ndi phokoso m'mavuto ena: pamene ali m'dera lopanda kulandiridwa kwenikweni, ngati amplifier akuwonjezera mphamvu kapena amplifier amapangidwa ndi wosadziwika wopanga, ndiko kuti, ali ndi khalidwe losafunika.
Malinga ndi maulendo ovomerezeka, maina a digito ndi awa:
- chithandizo;
- choyimira;
- zonse-mawonekedwe.
Njira zachitsulo zimalandira maulendo osiyana pafupipafupi ndipo sizigwiritsidwa ntchito ndi owonerera wamba, koma m'malo mwake.
Mankhwala amtunduwu amagwiritsidwa ntchito pa nthawi pamene kuli koyenera kutenga MB okha (mafunde a mamita) kapena mzere wa DMW (mafunde a decimeter). Kotero ku Russia kokha DMV-range ikugwiritsidwa ntchito, ndipo nyerere yogwira ntchitoyi ndi yokwanira.
Zilonda zonsezi zimagwirizana panthawi imodzi. Kawirikawiri, owonera TV akugula mazinthu oterewa, chifukwa akufuna kuwatenga njira, akufalitsidwa m'magulu a MV ndi a DMV.