Lo mshini isignali ithelevishini futhi ezahlukeneyo zalo

Njengoba umkhuba ubonisa, isithombe esikrinini TV ayisekeli njalo ukwanelisa ikhasimende ngekhwalithi yabo. Ezimweni ezinjalo ngokuvamile kungasiza isignali ithelevishini amplifier - idivayisi elikuvumela ukunikeza ezingeni best of ukusebenza umamukeli. It akalilahlile ngokuhlathulula ukusebenza kwawo ngisho phakathi ukuthuthukiswa ngokushesha ikhebula ubuchwepheshe. Iqiniso lokuthi leli thuluzi kungasetshenziswa ngabasebenzisi njengoba amanethiwekhi elakhiwa abantu abaningi, kanye "ikhebula" ababhalisile.

Isicelo yezwe

Lo mshini we isignali ithelevishini ukunikeza Cottage ikhambi ephelele kubantu abahlala ngaphandle amadolobha. Iqiniso liwukuthi, singekho kungenzeka uxhumano kunethiwekhi ikhebula, abampofu isignali reception antenna, noma umane khona abamukelayo eziningana (TV), kule divayisi lubaluleke. Lokhu kuyiqiniso ikakhulukazi ngokuphathelene lezo zindawo lapho lizinga umsindo wemvelo kuthinta iqophelo isiginali. Kufanele kuqashelwe ukuthi ezimweni ezinjalo, ochwepheshe batusa ukusebenzisa amadivaysi ezinjalo ngenxa amazinga misalignment okuncane agcwele isignali okufakwayo. Ngaphambi sikhonza ithelevishini isignali amandla ezingeni edlelana kusiteshi ngalinye ngokuhlukile.

antenna yokukhulisa umsindo

Esimweni lapho owamukelayo isignali itholakala kude ngalesi siteshi sethelevishini, futhi ukuze sivale lapho sisilela khona ukulahlekelwa ukuba senziwe izintambo ezinde, kuzuzisa ukusebenzisa yokukhulisa umsindo lukamakhalekhukhwini. Babuye uvame ukubizwa ngokuthi "antenna asebenzayo". Iyasebenza, ukwenyuka izinga isignali kungase kube into evamile (wideband) noma ukuhlukana (UHF futhi VHF).

Kukhethwa amplifier

A evame kakhulu umbuzo abathengi ezihambisana nedivaysi ezifana ithelevishini isignali amplifier, "Indlela ukukhetha idivayisi efanelekayo," Kuyadingeka ukuba acabangele ezinye nemingcele ukhiye. Esokuqala ukusebenza Ibhendi yokuvama. Iqiniso lokuthi imigudu yokwamukela antenna uqobo kanye amplifier kufanele uhambisane. Esinye isici - a esiphezulu okukhipha ezingeni (uma idivayisi ezinhle, lesi sibalo akusiyo esingaphansi 100 dB / UV). Caveat sesithathu siwukuthi inzuzo kumele kube njengoba eseduze ukuze inkomba 40 dB. Ejwayelekile amandla ukusetshenziswa ngokuvamile in the ezahlukene 10 kuya ku-60 ma. Kufinyeta kudivayisi Ukukhetha, kufanele kuphawulwe ukuthi ithelevishini isignali amplifier kumele babe inzuzo enkulu kakhulu nganoma imvamisa low.

Yokukhulisa umsindo ukuze ikhebula amanethiwekhi nezinhlobo zabo

Ukufaka amplifier kungavuka ezingxenyeni ezihlukahlukene kwenethiwekhi ababhalisile cable TV. Kule ndaba, kukhona onobuhle eziningi zalezi amadivaysi. Ukukhetha kwabo kuncike ngokuyinhloko indawo lapho idivayisi lizofakwa. Izinhlobo ezinkulu amadivayisi - lokhu izindlu isiqu yokukhulisa umsindo. Uhlobo lokuqala iyona elula. Instruments ngalo iphathwa, ngokuvamile efakwe kule zokuhlala, lapho kudingeka ukuba uxhume TV amaningi. Wendlovu yokukhulisa umsindo, okusekelwe amagama abo, isethwe imizila ikhebula. Ezimweni eziningi, ezibekwe umzimba die-cast uphawu, ngakho-ke kungenziwa etholakala noma iyiphi ingxenye inethiwekhi.

yokukhulisa umsindo Isethelayithi

Satellite TV kudivayisi isignali amplifier kungenazo entsha. Inikeza umsebenzisi ithuba ukuthatha kokubili ithelevishini kanye isignali satellite. Lapho ukusetshenziswa ibanga kude antenna zenzeka isignali ukulahlekelwa isinxephezelo nokusakazwa kwayo phakathi abamukelayo eziningi. yokukhulisa umsindo okunjalo kungaba kuhlanganiswe noma ukusebenza ngokwehlukile.