I-Amplifier ye-antenna ye-TV

Esikhathini sethu sobuchwepheshe be-digital, ukuhlwa komndeni ku- TV kancane kancane kudlulela esikhathini esidlule. Kodwa ngisho nanamuhla kubantu abaningi iTV ihlala yilawindi kuphela emhlabeni futhi indlela yokuhlukanisa isikhathi sabo sokuzilibazisa. Futhi zingaki imizwelo engathandeki ebangelwa isithombe esibhekene nesimo sekhanda elibhekene nampofu, eshayelayo, eqhutshwa ngamaphikseli athile ... Ezimweni eziningi, lezi zinkinga ziphathwa kalula - ukuthenga i-amplifier ekhethekile ye-antenna ye-TV. Indlela yokukhetha nokufaka i-amplifier ye- antenna ye- TV , ake sizame ukuyihlola ndawonye.

Ungakhetha kanjani i-amplifier ye-antenna ye-TV?

Emakethe yanamuhla, kunamamodeli amaningi kakhulu we-amplifiers we-TV esignela ukuthi ekuqaleni kunzima ukunquma ukuthi yikuphi okulungile kuleso simo ngasinye. Eqinisweni, konke kulula kakhulu - ngokukhetha okulungile kwanele ukwazi imingcele embalwa kuphela:

1. Ibanga elilinganiselwa lapho iphuzu eliseduze elidlulisela khona isignali yithelevishini. Kuye ngaleli banga, isici sokukhulisa se-amplifier sikhethiwe. Ibanga eliphakeme esiteshini sokudlulisa lingaba ngumyalo we-150 km. Njengoba ibanga elingaphansi kwezingu-10, i-amplifier ayidingekile nhlobo - yanele ukukhetha i-antenna ye-TV efanele. Akulungile neze ukuba "ukuhaha" futhi uthenge i-amplifier, ene-factor ephakeme kunokwakudingekile - amadivaysi anjalo anempahla yokuzijabulisa futhi esikhundleni sesithombe esiphezulu, ekugcineni, kuyothola ukuphazanyiswa okusha kuphela.
2. Ububanzi bezimpawu lapho isignali isakazwa khona imitha, i-decimeter, njll. Isixazululo esihle kunoma yiluphi uhla kuyobe ukufakwa kwe-broadband amplifier ye-antenna yonke ekwazi ukuthola amagagasi kwanoma yikuphi imvamisa. Kodwa imiphumela engcono kakhulu izotholakala ngokufaka i-narrow-band amplifier esebenza ebangeni elithile.
3. Uhlobo lwe-antenna efakwe ku-TV. Isibonelo, kuma-antenna wethelevishini we-trellis uhlobo, isignali ikhuliswa ngosizo lwama-amp amplifiers asebenzisa u-49-790 MHz. Kodwa ama-antenna angaphandle athandwayo we-Locus TV asebenza kahle ngama-amplifiers e-LSA.
4. Uma ukhetha kufanelekile ukunaka umdwebo womsindo we-amplifier - encane le parameter, ngcono isithombe sizobe sesiphelile kwesikrini se-TV.

Ngifaka kanjani i-antenna amplifier ye-TV?

Ukufakwa kwezinhlobonhlobo zanamuhla zamandla okukhulisa i-antenna ye-TV kulula kangangokuthi ngisho nomuntu oqhelile ngokuphelele kumsakazo we-radio angakwenza. Ukunikezwa kwamandla kunikezwa ku-amplifier, okuyi-amplifier okuxhumeke kuyo kwinethiwekhi yokunikezwa kwamandla. Ukusetshenziswa kwamandla kwedivayisi enjalo kuncane futhi kuvame ukuhleleka kwe-10 W. Uma ufaka i-amplifier ngokuqondile ku-antenna, umdwebo wendimbi isetshenziswa nge-adaptator ekhethekile ye-adapter. Uma usebenzisa idivayisi efanayo, i-amplifier ithola amandla ngokuqondile phezu kwekhebula le-coaxial, kanyekanye nesignali yethelevishini. Le adaptha ineziphumo ezimbili: eyodwa ixhuma ikhebula kusuka ku-antenna ye-TV, kanti enye into exhunyiwe ixhumeke kwisixhumi se-antenna ye-TV, kuyilapho i-adaptha ngokwayo ixhunyiwe kumandla omkhaya.

Uma ukhetha indawo yokufaka i-amplifier ye-antenna, khumbula ukuthi osondelene ne-antenna, isignali engcono iyoba ngcono. Kulesi simo, i-amplifier kumele ivikeleke ngokuthembekile emthonjeni wokuchithwa kwezulu. Uma ngabe usebenzisa ama-antenna angaphakathi ngaphakathi ne-amplifier ye-TV, lokhu okufakiwe kungasetshenziswa ngokuqondile e-antenna noma eduze nendawo.