Iyiphi I-Commercial FM Radio Transmitter Engcono Kakhulu?
Umsakazi womsakazo we-FM kuwumongo wazo zonke izinkampani ezisakaza ezohwebo, ngoba inhloso yesiteshi somsakazo ukuhlanganisa indawo ethile nokudlulisa isignali yomsakazo kuwo wonke owamukelayo, njengomsakazo. I-FM Transmitter iyisisetshenziswa sikagesi esidlulisa amasignali omsakazo.
Iyini I-FM Radio Transmitter ?
Ekusakazweni komsakazo, isidluliseli somsakazo we-FM akungabazeki ukuthi iyimishini ebaluleke kakhulu, ngoba inesibopho sokuguqula izwi lommemezeli kanye nezwi lokunye okuqukethwe okusakazwayo kube amasignali omsakazo, futhi iwasakaze kumamukeli wendawo yonke yokulalela ngothi. Esiteshini somsakazo, umbhobho wakho ungase ungabi muhle ngokwanele, noma ungase ungabi nayo i-audio processor ne-mix ukuze wenze umsindo ube ngcono, kodwa uma singekho isidluliseli somsakazo we-FM, noma ukusabalala kwawo kungenele, ngeke ukwazi. ukusakaza izwi lakho ngaphandle.
Amandla omsakazo we-FM asukela ku-1W kuye ku-10kW. Ivamise ukusebenzisana nothi lwe-FM nezinye izinto ezisetshenziswayo zomsindo nokukhiphayo, njengemakrofoni, umsakazo, isixhumi, iphrosesa yomsindo, njll. Ngokufanelekile, kuye ngamandla nezinye izici, isidluliseli se-FM singamboza irediyasi esukela kumakhulu amamitha. ukuya emashumini amakhilomitha. Ngakho-ke, inohlu olubanzi lokusebenzisa. Ingasetshenziselwa ukusakaza komphakathi, ukushayela enkonzweni, iziteshi zomsakazo eziqeqeshiwe, njalonjalo.
Lokhu kuyiqiniso ikakhulukazi ezinkampanini zokusakaza ezentengiso. Kumelwe bathenge ama-transmitters asebenza kahle kakhulu ukuze baqinisekise ukuthi ububanzi bokusakaza bukhulu ngokwanele futhi isignali yomsakazo izinzile ngokwanele, ukuze inikeze izinkonzo zokusakaza ezihamba phambili kubalaleli futhi ivelele phakathi kwezinkampani eziningi zokusakaza zentengiso. Ngakho-ke hlobo luni lomsakazi we-FM olufaneleka kakhulu ezinkampanini zokusakaza? Okulandelayo kuzokutshela ngokuningiliziwe.
Iluphi uhlobo Lwesidlulisi Esifaneleka Kakhulu Ukuze Sisetshenziswe Kwezentengiso?
Uma kukhulunywa ngokusakaza kwezentengiselwano, yimaphi amagama angukhiye owacabanga ngawo? Ukusabalala okukhulu, ikhwalithi yomsindo enhle kakhulu, isikhathi eside kakhulu sokusakaza, imishini yokusakaza echwepheshile. Konke lokhu kulungile. Uma abasakazi befuna ukwakha lo msakazo, badinga umsakazi osebenza kahle kakhulu. Umsakazi onjalo we-FM uzohlangabezana nalezi zimo.
Ibanga lokusakaza likhulu ngokwanele - isiteshi somsakazo esithengisayo singavala idolobha lonke, okusho ukuthi singase sidinge ububanzi bokukhava obungamashumi amakhilomitha, ngakho-ke ungase udinge isidlulisi esinamandla amakhulu wama-watts noma ama-kilowatts. Uma ufuna ukwazi ukuthi i-transmitter enamandla ahlukene ingamboza kangakanani, chofoza lapha ukuze ufunde kabanzi.
Kuyiphi i-frequency band- Lena yinkinga ebaluleke kakhulu. Amazwe amaningi emhlabeni asebenzisa u-87.5 - 108.0 MHz njengebhendi yefrikhwensi yokusakaza, kodwa amanye amazwe asebenzisa amanye amabhendi amafrikhwensi njengebhendi yefrikhwensi yokusakaza. Isibonelo, i-Japan isebenzisa ibhendi engu-76.0 - 95.0 MHz, kuyilapho amanye amazwe aseMpumalanga Yurophu esebenzisa ibhendi engu-65.8 - 74.0 MHz. Imvamisa yokusebenza komthumeli oyithengayo idinga ukuhlangabezana nebanga lebhendi yefrikhwensi evunyelwe ezweni lakini.
Qinisekisa izinga eliphezulu lomsindo - udinga ukwenza ngomsakazo we-FM ngekhwalithi yomsindo eyanele. Ungakhetha ngokwaleli zinga. I-SNR inkulu kuno-40dB, ukuhlukaniswa kwesitiriyo kukhulu kuno-40dB, futhi ukuhlanekezela kungaphansi kuka-1%. Umsindo womsindo odluliswa isidlulisi esihlangabezana nalawa mazinga uzoba mncane uma kuqhathaniswa. I-transmitter kufanele futhi ifakwe ubuchwepheshe bedijithali ye-DSP / DDS ukucubungula umsindo, ngoba ikhwalithi yomsindo izothuthukiswa kakhulu.
Kungase kube khona izifinyezo. Ake senze isibonelo, i-fmuser's fu618f-1000c FM esakaza isidluliseli se-stereo. Ngenxa yokuhlukaniswa kwayo kwe-75db SNR kanye ne-60dB stereo, kuphela izinga lokuhlanekezela elingu-0.05%, futhi ifakwe ubuchwepheshe bakamuva bedijithali ye-DSP ne-DDP, isibe esinye sezisakazo ze-Fmuser ezithengiswa kakhulu zezentengiselwano, futhi iye yanconywa kakhulu njengokuthi "phezulu. ikhwalithi yomsindo" kanye "nomsindo ophansi".
Ukusakaza isikhathi eside - imisakazo yezohwebo kusho ukuthi awukwazi ukuwenza amaphutha, njengokungaphumi komsindo kungazelelwe imizuzwana embalwa, okuzophazamisa kakhulu isithunzi nenzuzo yenkampani yokusakaza. Ngakho-ke, ukuze usakaze ngokuzinza futhi isikhathi eside, isidluliseli sidinga ukuhlonyiswa ngalobu buchwepheshe:
- I-PLL ivumela isidluliseli ukuthi sisebenze ngokuzinza kufrikhwensi eyodwa isikhathi eside ngaphandle kokukhukhuleka
- Ipulaki eshisayo ivumela isidluliseli ukuthi simiselele amamojula alimele futhi anephutha ngaphandle kokumisa ukusakaza
Lapho isidluliseli esikhulu sihluleka, uhlelo lwe-N + 1 luzoqala ngokuzenzakalelayo umshini olindile ukuze kuqinisekiswe ukusebenza okuvamile kwesiteshi somsakazo. Lokhu angeke kufake ngokugcwele zonke izidingo zesiteshi somsakazo esithengisayo. Uma usebenza esiteshini somsakazo esithengisayo futhi udinga ukubeka phambili ezinye izidingo zokusakaza, sicela uthinte ithimba lonjiniyela be-fmuser, futhi sizophendula imibuzo yakho ngokwesimo sakho sangempela.
Futhi Udinga Umhlinzeki Othembekile
Izinkampani zokusakaza ezentengiselwano azidingi nje kuphela okokusebenza okuhle kakhulu, kodwa futhi zidinga umphakeli wemishini onokwethenjelwa ukuze akunikeze isevisi ephelele ngemva kokuthengisa ukuze ugweme izinkinga ngesikhathi sokusebenzisa. Ngesikhathi esifanayo, ukukhetha abahlinzeki abafanelekile nakho kungakongela izindleko eziningi. Emsakazweni nakumabonakude, kubaluleke kakhulu ukwehlisa izindleko. Kungani ungakhethi i-fuser? UFmuser ungumhlinzeki onokwethenjelwa wezinto zokusakaza zomsakazo kanye nezixazululo, ezingakunikeza iphakheji yomsakazo we-FM esezingeni eliphezulu futhi engabizi kakhulu eziteshini zomsakazo zentengiso. Uma unentshisekelo, sicela ukhululeke ukuxhumana nathi! Sizokwenza uzizwe sengathi izidingo zakho ziyazwakala futhi ziyaqondwa.
