Iluphi i-antenna oludingekayo kumabonakude wedijithali ezweni – ngaphandle nangaphakathi

Hlobo luni lwe-antenna oludingekayo ku-TV yedijithali endlini yezwe, emgwaqeni nasendlini. [i-id yamagama-ncazo = “okunamathiselwe_10926″ align=”aligncenter” wide=”750″]
uthi lwendlu yangasese yasehlobo[/caption]

Kafushane nge-TV yedijithali yezindlu zasehlobo – yini okudingeka ukwazi?

Ukuze ube nokuphila okunethezekile ezweni, umuntu udinga ukuthutheleka kolwazi njalo. Indima ebalulekile ekudalweni kwayo idlalwa ukutholakala kwethelevishini esezingeni eliphezulu. Ezimweni eziningi, inganikezwa uma wazi ukuthi ungayenza kanjani kahle. Ukuze uthole isignali ye-TV, uzodinga ukufaka uthi lwedijithali. Ukuzikhethela kwakhe kusekelwe ekutholakaleni kwamathuba afanelekile endaweni – ukuba khona kophindaphinda uhlobo oluthile lwesignali. Izimo ezilandelayo ngokuvamile zingenzeka:

1. Umabonakude wasemhlabeni ungasakazwa ebangeni lamamitha noma amadesimitha. Ama-antenna aklanyelwe ukuyithola avame ukusetshenziswa ezindlini zasehlobo. Inzuzo yabo izindleko zabo eziphansi, futhi okubi kwabo amandla abo alinganiselwe uma kuqhathaniswa nezinye izinhlobo zabo. Ikakhulukazi, inani elincane kuphela lamashaneli e-TV avame ukutholakala. Lolu khetho lungase lufaneleke kulabo abangavamile ukuvakashela indlu yezwe futhi abafuni ukuthenga imishini ebiza kakhulu. [i-id yamagama-ncazo = “okunamathiselwe_10924″ align=”aligncenter” wide=”458″] Umabonakude wasemhlabeni ungatholwa ngothi lwangaphandle[/caption]
2. Isignali yedijithali ingeyekhwalithi ephezulu. Endaweni engaphansi kwedolobha, okungenani iziteshi zethelevishini ezingama-20 zalolu hlobo zivame ukutholakala. Ukuze uthole isignali yedijithali, lolu hlobo lombhoshongo odluliselwe kufanele lube khona. Ukuqinisekisa ukwamukelwa kwe-TV yekhwalithi ephezulu, ngokuvamile ngeke udinge nje i-antenna yohlobo olufanele, kodwa futhi neshuna ye-DVB-T2. Kumamodeli e-TV amasha, ukwamukela kuyenzeka ngaphandle kokusebenzisa ibhokisi elibekwe phezulu.
3. Usebenzisa isitsha sesathelayithi , ungathola iziteshi eziningi. Kulokhu, asikho isidingo sombhoshongo odluliswayo. Isiginali izodluliswa isuka kusathelayithi iye othini oluqondiswe kuyo ngokuqondile. Kuye ngekhwalithi yayo, izakhiwo ezinobubanzi obuyi-60 kuya ku-90 cm zisetshenziswa.Inketho yokugcina isetshenziswa ezimweni lapho isignali ibuthakathaka. Lo mshini usezingeni eliphezulu kodwa ubiza kakhulu. Enye yezinkinga ezibaluleke kakhulu wukuqinisekisa ukuphepha kwayo ezweni.

Inketho engabizi kakhulu ehlinzeka ngekhwalithi enhle yokwamukela kanye nezinhlobonhlobo zamashaneli atholakalayo ukusebenzisa uthi ukuze uthole umabonakude wedijithali.

Iyiphi i-antenna edingekayo kumabonakude wedijithali endlini yezwe

Ukukhetha i-antenna yendawo yokuhlala ehlobo kudinga ukucabangela amapharamitha ahlukahlukene. Umthengi kufanele acabangele izici ezilandelayo:

1. Izinga lokwamukela isignali lincike kubukhulu benzuzo yamandla. Imele isilinganiso samandla wedivayisi yokudlulisa nokwamukela. Leli nani likalwa nge-dBi. Ngebanga eliya embhoshongweni odluliswayo ongadluli ku-50 km, inani le-13 dBi libhekwa njengelamukelekayo. Ebangeni elikhulu, ukwanda kwamandla kufanele kube phezulu.
2. Ukuba khona kwe-amplifier kuzothuthukisa ikhwalithi yokwamukela.
3. Isici esibalulekile ububanzi befrikhwensi etholiwe. Kubalulekile ukuthi ifake iziteshi ezidingwa ngumsebenzisi.

Lapho uthenga, udinga ukunaka ikhwalithi yekhebula le-
coaxial elisetshenzisiwe . Kuncike kakhulu ekutheni i-antenna inganikeza isithombe nomsindo. [i-id yamagama-ncazo = “okunamathiselwe_10922″ align=”aligncenter” wide=”1180″]
I-antenna ye-TV yedijithali ezweni[/caption]

Izinti zasendlini zokunikeza umabonakude wedijithali

Zifaneleka ezimweni lapho i-repeater iseduze futhi idala isignali yethelevishini enamandla. Kodwa-ke, kufanele kukhunjulwe ukuthi izinga lokwamukela lizothinteka ubukhulu bezindonga, ukuba khona kanye nendawo yamafasitela, kanye nezinye izici ezifanayo. I-antenna yasendlini iwumklamo ohlangene. Uma kunesidingo, ingafakwa i-amplifier yesignali. Izinzuzo zabo nazo ziyizindleko eziphansi, ukuhamba kalula nokufaka okulula. Njengokubi, ikhwalithi yokwamukela ibhekwa, ezithethelela kuphela phambi kwesignali eqinile. Ukuze usebenze, kudinga ukushuna ngokucophelela ukuze uthole ikhwalithi yesiginali etholakalayo.

I-antenna yangaphandle yethelevishini yedijithali

Lawa madivayisi anamandla amaningi futhi ahlinzeka ngekhwalithi ephezulu yesiginali eyamukelwe. Ama-antenna anjalo aqondisa, okwandisa kakhulu ububanzi bawo. Ukusetshenziswa kwama-antenna angaphandle kunenzuzo eyengeziwe, naphezu kwezindleko eziphakeme, ngoba zikuvumela ukuthi uthole ikhwalithi enhle yesignali eyamukelayo ngisho nokuphindaphinda okude. Ukuze uthuthukise isignali eyamukelwe, ungasebenzisa i-amplifier. Ukwanda kokusebenza kahle komsebenzi kungafinyelela ku-50%.

Indlela yokukhetha i-antenna

Lapho ukhetha uthi, umthengi kufanele anqume ukuthi yiziphi izimfanelo idivayisi ekhethiwe okufanele ibe nazo. Kulokhu, okulandelayo kufanele kucatshangelwe:

1. Udinga ukunquma ukuthi i-antenna kufanele ibekwe kuphi . Ukukhethwa kwe-antenna eyakhelwe ngaphakathi noma yangaphakathi kuyazithethelela phambi kwesignali yethelevishini enamandla. Uma lesi simo singahlangatshezwana nayo, udinga ukuthenga uthi olungaphandle.
2. Udinga ukukhetha ububanzi obulungile . Inketho enenzuzo eyengeziwe ukusebenzisa i-decimeter. Uma isignali yedijithali ibanjwe kabi, udinga ukucabanga ngokuthenga i-amplifier yesiginali eyamukelwe.

3. Udinga ukunquma ukuthi yiluphi uthi oludingekayo, olusebenzayo noma lwenziwa . Esimweni sokuqala, kufanele ibe ne-amplifier yesignali eyakhelwe ngaphakathi. Ifaneleka lapho isignali evela kophindayo ingenamandla ngokwanele. Ukuze uthole i-antenna ye-passive, ungasebenzisa i-amplifier eyakhelwe ngaphakathi. Esimweni sokugcina, kungenzeka ukukhetha i-amplifier efanelekile. Phakathi nokuduma kwezulu, lokhu kunciphisa ingcuphe yokutubeka kwe-amplifier, ephakeme kakhulu kudivayisi esebenzayo. Kuyunithi yangaphandle ye-passive, i-amplifier itholakala ekamelweni, okwandisa ukuthembeka kokusebenza.
4. Kudingeka ukucabangela ibanga eliya embhoshongweni oseduze odluliselwe phambili . Uma iseduze, ungasebenzisa i-antenna eyakhelwe ngaphakathi noma yasendlini. Uma kungenjalo, kungcono ukukhetha ingaphandle.
5. Intengo yedivayisi kufanele ihambisane namakhono omthengi. Nokho, ukuze uthenge uthi, udinga ukukhetha idivayisi esezingeni eliphezulu kakhulu.
6. Kudingekile ukucabangela ikhwalithi yesithombe esiphumela kanye nomsindo , kanye nokukhetha imodeli enokuthembeka okuphezulu nokuphila kwenkonzo. Kulokhu, kufanele kucatshangelwe ukuthi i-antenna yangaphandle, nakuba inikeza ukwamukela okuhle kwesignali, nokho ingaphansi komswakama, umoya, ukulimala komshini nezinye izici.

7. Kudingekile ukucabangela ukuba khona kwamabakaki okufakwa futhi unake impahla yokukhiqiza. Ngokuvamile isetshenziswa njengensimbi noma i-aluminium. Esimweni sokuqala, i-antenna izohlala isikhathi eside, okwesibili ngeke ithinteke ukugqwala.
8. Lawa madivayisi angasebenzisa izimo ezihlukahlukene kanye nemiklamo . Ngaphambi kokufaka, umsebenzisi kufanele acabangele ukuthi ukufakwa kuzoba lula kangakanani, futhi anake ukuhambisana kwedivayisi nomklamo okhona.
9. Lapho uthenga, udinga ukwenza isiqiniseko sokuthi kukhona izinga elifanelekile lokumelana nomthwalo womoya e. Libonakala ngamavelu amabili – isivinini somoya esiphezulu esivumelekile lapho ukusebenza okujwayelekile kungenzeka khona, kanye nesivinini lapho iyunithi izobhujiswa. Amanani we-20 no-40 afanelekile, isibonelo, i-dacha endaweni ethule endaweni ephansi. Uma itholakala egqumeni, udinga ukusebenzisa 25-30 kanye 50.

Ngezinye izikhathi, ngaphambi kokukhetha i-antenna, kunengqondo ukubonisana nomakhelwane asebevele benayo i-antenna. Bazokwazi ukwabelana ngolwazi lwabo lokusebenzisa idivayisi.

I-antenna ye-TV yedijithali eya endlini yezwe ngaphandle – ongakhetha ukukunikeza izimpondo ezisebenzayo nezingenzi lutho: https://youtu.be/eX9gUHRO5ps

Iyiphi i-antenna ongakhetha kuyo ithelevishini yedijithali yendawo yokuhlala ehlobo – amamodeli angcono kakhulu ka-2022

Lapho ukhetha i-antenna yedijithali yendawo yokuhlala ehlobo, ungagxila kumamodeli afakazele ikhwalithi yawo ekusebenzeni. Okulandelayo kuchaza okudume kakhulu kubo.

I-Locus Meridian-07 AF TURBO L025.07DT

Le antenna yenziwe nge-aluminium. Ilula futhi incane ngosayizi. Idizayini inikeza isignali ye-TV yekhwalithi futhi inikeza isithombe esihle nomsindo. Ikhithi ihlanganisa i-amplifier ezohlinzeka ngokwamukela ngisho nebanga elide ukusuka kumbhoshongo wokudlulisa. Njengokubi, kufanele kuqashelwe ukuntuleka kwamabakaki okufakwa, kanye nokunikezwa kwamandla okusebenza kwe-amplifier. Owokugcina uzodinga ukuthengwa ngokwehlukana.

I-Harper ADVB-2440

Le antenna ifakwe ngaphandle, okuqinisekisa ukwamukelwa okuhle kwezinhlelo zethelevishini. Idizayini ine-amplifier eyakhelwe ngaphakathi. I-antenna ikuvumela ukuthi uthole amashaneli e-analog nedijithali anesithombe sekhwalithi ephezulu nomsindo. Umklamo uhlangene, awusindi futhi unomklamo omuhle nowangempela. Ukukhwezwa kwe-antenna kufakiwe. Ngeke ibambe i-TV kuphela, kodwa futhi nesignali yomsakazo.

I-Ramo Inter 2.0

Lolu uthi luyimodeli yedeskithophu futhi yakhelwe ukubekwa ekamelweni. Le divayisi ehlangene inokusebenza okubanzi. I-amplifier eyakhelwe ngaphakathi ikuvumela ukuthi ulungise inzuzo. Lolu cingo luklanyelwe ukwamukela amasignali edijithali, e-analog nawomsakazo. Isebenza ngogesi. Ikhithi ihlanganisa izintambo zokuxhuma zekhwalithi ephezulu. Njengokubi, ukuba khona kwecala lepulasitiki elinganele lekhwalithi ephezulu liyaphawulwa.

Ungayenza kanjani i-antenna ye-dacha yethelevishini yedijithali ngokwakho

Kunezinhlobo ezimbalwa zezimpondo ze-TV ongazenza ngokwakho. Imodeli elula cishe iyiluphu yekhebula. Ukuze ukwenze, uzodinga ukuqoqa ikhebula le-coaxial, amathuluzi okusebenza nalo kanye nepulaki elisebenzela ukuxhuma.
Ukuze ukhiqize, udinga ukwenza okulandelayo:

1. Sika ikhebula le-coaxial elingu-1.5-2 m.
2. Ukusuka komunye umkhawulo, kuyadingeka ukususa ukufakwa, bese udinga ukusonta izintambo zibe yinqwaba eyodwa.
3. Ebangeni elingama-20 cm ukusuka onqenqemeni, udinga ukususa i-insulation kanye ne-braid ngo-5 cm.
4. Ngemuva komunye u-20 cm, udinga ukususa igobolondo langaphandle ngo-5 cm.
5. Ikhebula kufanele ligotshwe libe yindandatho, lixhume ukuphela kwekhebula engxenyeni ehlanziwe.
6. Ipulaki kufanele ixhunywe kwenye iringi yekhebula.

Kubalulekile ukukhetha ububanzi bendandatho efanele. Kumelwe ilingane nobude begagasi besignali eyamukelwe. Kunqunywa ifomula ekhethekile esekelwe kubuningi bokuhumusha.
L = 300 / F Lezi zimpawu ezilandelayo zisetshenziswa lapha:

1. L ububanzi bendandatho eyakhiwe ikhebula.
2. F imvamisa yokusakaza isignali.

Bala ububanzi ngaphambi kokuqala umsebenzi bese wenza iringi ehambelana ncamashi nobude begagasi. I-antenna eyenziwe ekhaya ye-TV yedijithali ezweni: https://youtu.be/TzPEDjIGi00

Indlela yokuthuthukisa ukwamukela

Ngezinye izikhathi izinga lesignali eliphansi liba khona uma usebenzisa izinhlobo eziphelelwe yisikhathi zekhebula lokuxhuma. Uma kungenzeka, kunconywa ukuthenga engcono. Kwezinye izimo, lokhu kungase kulungise inkinga yokunikezela. Uma usebenzisa i-amplifier yangaphandle, ubude bentambo yokuxhuma budlala indima ebalulekile. Kumele kuncishiswe ngangokunokwenzeka.
Uma umbhoshongo we-relay ukude, ukusetshenziswa kwe-amplifier yesignali kungasiza. Lokhu kunenzuzo ezimweni lapho kukhona intambo ende yokuxhuma lapho kwenzeka khona ukuncishiswa. Uma i-amplifier isetshenziswa isikhathi eside, inganciphisa ukusebenza. Lokhu, isibonelo, kungase kube ngenxa yezinga eliphansi lokunikezwa kwamandla kagesi. Uma i-antenna ifakwe ngale ndlela, izohamba ngaphansi kwethonya lomoya noma isimo sezulu esibi. Esimweni esinjalo, kuyadingeka ukuqinisekisa ukuqiniswa kwayo okuthembekile.