Kunezindlela eziningi zokulalela umculo nokunye okuqukethwe komsindo emotweni yakho kunanini ngaphambili, kodwa iningi lazo alifani neze ukudlala kahle ngamayunithi amakhanda asebekhulile. Ngaphandle uma umsakazo wakho wemoto weza ngokufaka okusizayo, izinketho zakho zincane kakhulu. Yilapho abathumeli be-FM abasemotweni bengasiza ngempela kusukela la madivaysi engeza okokufaka okusizayo kunoma yimuphi umsakazo wemoto, futhi benza umsebenzi ongcono kunomshicileli wakho we-FM ovamile.
Iyini i-In-Car FM Modulator?
I-modulator ye-FM engaphakathi kwemoto ingummoduli wesisindo somsakazo oklanyelwe ukusetshenziswa ohlelweni lokulalelwayo lwemoto. Ama-modulators omsakazo we-radio basuke nje kuphela amadivaysi asebenzayo ayeklanyelwe ukuvumela izingxenye zangaphandle ukuba zifakwe emathelevishini nakuma-radios ekhaya.
Njengoba kokubili amathelevishini nama-radios ekhaya ekuqaleni kwaklanyelwe ukwamukela izimpendulo zeRF kuphela ezivela kuma-antenna, abathuthukisi be-RF bafaka ngokuyinhloko isignali yomsindo kanye / noma yevidiyo kumagagasi othwala, okungasetshenziselwa isethi ye-TV noma i-head unit njengoba nje yayitholwe nge-over the broadcast air.
I-Basics of Broadcasting
Konke kokusakazwa kwethelevishini nomsakazo, kufaka phakathi umsakazo we- AM ne-FM , sebenzisa ngendlela efanayo. Emsakazweni noma esiteshini sethelevishini, uhlelo lokulalelwayo kanye / noma lwevidiyo lengezwa ku-wave wave yenkampani yenethiwekhi nge-modulation noma ukumodulinganisa kwe-amplitude (AM). Ukusakazwa kwethelevishini ye-Analog esetshenziselwa ukusebenzisa i-vestigial sideband modulation, eyayihlobo lokulinganisa kwe-amplitude, nokusakazwa kwe-digital zisebenzisa izinhlobo eziningi ze-modulation. Isignali yenethiwekhi ethintekayo isakazwa emoyeni (OTA).
Uma umsakazo wenethiwekhi uthathwa ngophawu, isignali ishintshwe yi-hardware ngaphakathi kwithelevishini noma kumsakazo, okuyinto inqubo yokubuyisela idatha yangempela yomsindo kanye / noma yevidiyo kusuka kumagagasi esithwaliwe. Isibonakaliso singaboniswa ku-TV noma sidlalwe kumsakazo.
Kuze kube maduze nje, amashayipeletsele angenazo / izimpendulo ngaphandle kwe-antenna hookup, futhi eziningi zezinqamuleli zezimoto ziyaqhubeka zingenalo uhlobo lokufaka okusizayo. Ukuze kusebenze ukuxhumana kwamadivaysi afana nama-VCRs kumathelevishini, kanye ne-tape decks noma ama-CD abadlali kuma-radios emoto, ama-modulators e-RF asungulwa.
Ukukhohlisa i-Tuner ngeModulator ye-Car FM
Imisakazo yemoto kanye nethelevishini zenzelwe ukuthola uhlelo olubhekene nendawo ekhethekile kakhulu ye-spectrum electrumagnetic spectrum. Ihluke ngendlela iziteshi neziteshi ezichazwa ngayo, kodwa bobabili "baxhuma" kumvamisa othize ukuze bafinyelele noma yisiphi isiteshi esinikeziwe noma isiteshi. Empeleni, i-modulator yezimoto ze-FM isebenzisa lokho "ukukhohlisa" iyunithi yekhanda ukuze idlale okuthile ngaphandle kokusakazwa kwe-OTA. Ngendlela efanayo, konke okuvela ku-VCRs kuya kubadlali be-DVD namaseyimu wegeyimu yevidiyo kungaxhunyelwa kuma-TV amasethi angenayo imibono ye-A / V.
Ukuze ufeze lokhu, i-modulator yemoto ye-FM kufanele ifakwe phakathi kweyunithi yekhanda ne-antenna. Izimpawu ezisuka e-antenna zidlula ku-modulator futhi zibe yunithi yekhanda, kodwa ummoduli unomnikelo ongasiza ongathintwa kumdlali we-CD, i-iPod, umdlali we-MP3 ojwayelekile, noma omunye umthombo wezwi. Uma idivayisi ixhunyiwe ku-modulator ngaleyo ndlela, ngokuyinhloko yenza into efanayo eyenzeka esiteshini somsakazo: isignali yomsindo ingeziwe kumagagasi othwala, okudluliselwa kuwo kuze kube yunithi yekhanda.
Abathuthukisi be-Car FM ne-FM Transmitters
Ngesikhathi ama modulators e-FM nemoto ehamba phambili efana kakhulu, kukhona umehluko owodwa oyinhloko endleleni i-head unit eyamukela ngayo isignali. Ngenxa yemithetho evimbela amandla amathumeli womsakazo angavumelekile, abahambisa imoto ye-FM kufanele babe namandla aphansi kakhulu. Bomelele ngokwanele ukuhambisa izinyawo ezimbalwa ezibahlukanisa ngokujwayelekile emotweni ye-car, kodwa kulula ukuthi isignali encane ifakwe endaweni lapho kungekho khona khona "izikhala" ezifakiwe kwi-FM.
Njengoba izimoto zomshuwalense we-FM zithinta isignali ngqo kwiyunithi yekhanda, kuncane amathuba okuphazamiseka. Lawa madivayisi angakwazi ukuphazamiseka, futhi ngokuvamile akakwazi ukufanisa ikhwalithi yomsindo wechweba elisizayo, kodwa kuyindlela enhle yezinyunithi zekhanda ezingenawo amachweba asizayo.