I-Antenna amplifier yeTV: umgaqo wokusebenza, ukhetho, i-DIY

Ingxaki yesignali yeTV enganelanga, ngenxa yokuba umgangatho womfanekiso kwisikrini seTV uyancipha, uxazululwa ngoncedo lwe-amplifier yesignali evela kwi-antenna yeTV. Unokukhetha isixhobo esifanelekileyo kwimilinganiselo yethu yeemodeli ezilungileyo okanye, ukuba unamava athile, yenza isixhobo esinjalo ngokwakho.

Yintoni iAntenna yeTV yeAntenna?

Isandisi sikamabonwakude sisixhobo sokukhulisa isignali kamabonakude kunye nokunciphisa ukuphazamiseka, nto leyo enika umfanekiso ongcono. Isixhobo sinceda ukunyusa uvakalelo, ukukhawulwa yimiphumo yengxolo, kunye nokuhlawulela ilahleko yesignali kamabonwakude efunyenweyo kwintambo ye-coaxial. https://youtu.be/GI89hrNQ-BA

Yila iimpawu zeamplifier ye-eriyali

Izikhulisi ze-eriyali zikamabonwakude zilula kwaye zinokwahluka kuyilo, zinokukhulisa zombini imiqondiso yedijithali kunye ne-analog. Kwezinye iimeko, zenziwe ngamabhodi amabini kunye nesekethe yokunciphisa ingxolo ephunyeziweyo. Esinye isiphaluka sisihluzo se-high-frequency filter, okwesibini sine-capacitor yokulawula i-frequency. Umlawuli unceda ukufumana inzuzo enkulu ye-TV ye-TV ye-4.7 dB kunye ne-frequency yokusebenza ye-400 MHz. Ukufumana uzinzo, basebenzisa i-stabilizer kunye ne-electrolyte kunye nebhuloho ye-diode efakwe kwisiphaluka sayo. I-amplifier iqhagamshelwe kumamkeli weTV usebenzisa i-capacitor. Zonke i-amplifiers ze-antenna zixhotyiswe ngombane wombane, kuphela indawo yendawo yayo eyahlukileyo (eyakhelwe ngaphakathi nangaphandle). Isixhobo esakhelwe ngaphakathi sisebenza kakuhle kunye nombane ozinzileyo kwaye siya kusebenzisa ukuya kuthi ga kwi-10 V. Ukuba isixhobo siyatsha, kuya kufuneka utshintshe sonke isixhobo se-eriyali. Ngenxa yesi sizathu, phambi kokunyuka kwamandla, kuya kuba lula ngakumbi ukusebenzisa iiyunithi zangaphandle. Zinkulu ngobukhulu kwaye zineempembelelo ezahlukeneyo zombane ngokuxhomekeke kwi-amplifier (5, 12, 18, 24 V).

Ukuhlelwa

Kumaza asemhlabeni amatshaneli eTV, uluhlu lweemitha (MV) kunye ne-decimeter (UHF) frequencies ziyasetyenziswa. Kwimeko yokuqala, i-frequency ye-30-300 MHz isetyenziswa, kwaye okwesibini – 300-3000 MHz. Ngokuxhomekeke kuluhlu lwefrikhwensi efunyenweyo, iamplifier ingaba:

• i- broadband – ukugubungela i-wide wave spectrum;
• uluhlu – lusebenzisa imitha okanye uluhlu lwe-decimeter ekusebenzeni;
• i- multibanddesigned kuzo zombini izintlu.

Kwimeko eqhelekileyo, ngophawu oluhle, i-amplifier ye-broadband yanele. Ngokwamkelwa okungahambi kakuhle, kuyafaneleka ukusebenzisa isixhobo esijoliswe kancinci, esenza indima yaso kuluhlu oluthile olungcono kune-broadband.

Usasazo lwedijithali lwenziwa kusetyenziswa umgangatho we -DVB-T2 . Kumajelo osasazo edijithali, luluhlu lwe-UHF kuphela olusetyenziswayo, ngoko ke iamplifier ye-TV yedijithali yomgangatho we-DVB-T2 ilungele usasazo lwe-TV yedijithali. Uvavanyo lwe-Antenna amplifier kumabonakude wedijithali we-DVB-T2: https://youtu.be/oLRaiYPj6sQ Izikhulisi zikwahluka ngokombane ofunekayo:

1. Iivolthi ezilishumi elinesibini zezona zixhaphakileyo. Baya kufuna ukongezwa kombane ongezelelweyo, onokuthi kwezinye iimeko zilawulwe.
2. I-five- volt inokudityaniswa kwi-tuner ye-TV okanye i-TV usebenzisa intambo ye-coaxial. Njengomthetho, zigxininiswe kwi-antenna.

Ngokuxhomekeke kuhlobo lukamabonwakude, izixhobo zokukhulisa zihlelwa ngolu hlobo lulandelayo:

• i-eriyali
• isathelayithi
• intambo.

I-cable kunye ne-satellite amplifiers zisetyenziswa kunqabile kakhulu, kuba sele zigqithisa isignali ephezulu kakhulu. Ngamanye amaxesha iamplifier isetyenziselwa umabonakude wentambo ukuba intambo iqhagamshelwe koomabonakude abaninzi ngaxeshanye. Izixhobo zokukhulisa i-eriyali zisetyenziswa rhoqo kakhulu.

Izinto eziluncedo kunye nezingeloncedo zeamplifiers zomqondiso weTV

Xa useta inethiwekhi yeTV yasekhaya, kufuneka ukhumbule: ukuba usebenzisa iisekethe ezininzi zokukhulisa, kuya kubakho ukugqwesa okubalulekileyo komjelo wevidiyo. Kule nkalo, inani le-antenna amplifiers kufuneka ligcinwe lincinci.

Iimpawu ze-amplifier ziquka:

• ukukwazi ukufumana neyona miqondiso yeTV ibuthathaka;
• ubukho be-coefficients yomsindo omncinci;
• ukuba nokwenzeka kokukhulisa umqondiso ngaxeshanye kuluhlu lwamaza obuninzi.

Ukungalungi kwezixhobo zokukhulisa zezi:

• ukuba i-amplifier ye-broadband isetyenzisiwe, kukho ithuba lokulayisha ngaphezulu kwinqanaba elivumelekileyo lomqondiso we-TV, ngoko ke kufuneka lixhotyiswe nge-regulator kwiindidi ezahlukeneyo ukuphelisa inkathazo enjalo;
• self-excitability yesixhobo;
• ukungenwa ziindudumo;
• ukuba nokwenzeka kokulahleka komqondiso weTV kwimveliso.

Izikhulisi zilungisa umqondiso osuka kwi-eriyali ukuya kwi-TV. Kule nkalo, ukhetho luphenjelelwa yindawo kunye nesidingo sezixhobo zethelevishini. I-amplifier kwi-antenna ye-TV ngaphandle kwesixeko inceda ukusombulula ngokufanelekileyo umba onzima wokufumana isignali ye-TV ephezulu.

Iikhrayitheriya eziphambili zokukhetha i-amplifiers yesignali kamabonakude

I-amplifier ye-antenna yethelevishini ikhethwe ngokwemiqathango yobugcisa besixhobo kwaye ngokuhambelana nezinto zangaphandle (umzekelo, indawo kunye neemeko zokufakela). Eyona nto ibalulekileyo kukuqwalasela iimpawu ezichaphazela umgangatho wesignali kamabonwakude, apho babhenela ekusebenziseni izixhobo ezongezelelweyo.

Uluhlu lwamaza okusebenza

Kukho izixhobo ezithathu ezinxulumene noluhlu lwamaza: iTV, i- eriyali , kunye neamplifier. Okokuqala, i-eriyali ikhethiwe. Kolu khetho, kuyimfuneko ukuba kuthathelwe ingqalelo ukugqwesa okulathiswe kancinci kuluhlu olubanzi ngokwamandla omqondiso. Ukuba i-repeater ifumaneka kufuphi nendawo yokwamkela, ngoko “i-wave yonke” ifanelekile, ikwazi ukugubungela uluhlu olubanzi. Ukufumana umqondiso osuka kwindawo ekude ye-TV kuya kufumaneka kusetyenziswa isixhobo esilungelelaniswe kuluhlu olulinganiselwe lwamaza (umzekelo, i-VHF okanye i-UHF).

Ngokuhambelana nokuphendula rhoqo kwe-eriyali, i-amplifier ikhethiwe. Ukuba uluhlu aluhambelani, isixhobo esikhoyo asiyi kukwazi ukusebenza.

Umfanekiso wengxolo

Ngoncedo lwe-amplifier, i-signal-to-noise ratio kufuneka ilungiswe phezulu. Ngenxa yokuba isixhobo ngasinye sifumana ingxolo yaso ngexesha lokuhanjiswa kwedatha, njengoko isignali isanda, nazo zibaluleka ngakumbi. Kuvunyiwe ngokubanzi ukuba ixabiso lempembelelo yengxolo akufanele libe ngaphezu kwe-3 dB. Kuphela phantsi kweemeko ezinjalo apho sinokuthi sithethe ngeziqinisekiso zomgangatho olungileyo wokuhanjiswa komqondiso weTV. Nangona kunjalo, izixhobo ezitsha zinokuba nexabiso eliphantsi le-2 dB.

Inzuzo

Ubukho beyona coefficient iphezulu enokwenzeka akuqinisekisi owona mgangatho ubalaseleyo wothumelo. Ngaphezu koko, ngokukhuliswa okugqithisileyo, isignali yeTV iya kuphazamiseka ngesiphumo esichaseneyo (ukunqunyulwa okanye ukulayisha ngaphezulu). I-dB isetyenziselwa ukulinganisa iparameter, kwaye amaxabiso ayo aphakathi ngala:

• i-decimeter – ukusuka kwi-30 ukuya kwi-40 dB;
• imitha – 10 dB.

Kule nto kulandela ukuba i-decimeter iya kuba ne-coverage ukusuka kwi-20 ukuya kwi-60 iziteshi ze-TV, kunye nemitha – akukho ngaphezu kwe-12. Ngokunyuka kwenzuzo nge-15-20 dB, sinokuthetha ngesiphumo esihle.

Xa ukhetha i-amplifier yinto, kufuneka usekelwe kwiimeko zangempela kunye nenqanaba lokumkela. Njengomthetho, umgama ukusuka kwinqaba yeTV (i-relay) ithathelwa ingqalelo. Ukuba inqaba yeTV ibekwe kumgca othe ngqo wokujonga, ngoko ke ukuthengwa kwe-amplifier ayifuni.

I-eriyali esebenzayo okanye esenziwayo

Ii-eriyali zokufumana isignali yeTV zinokusebenza kwaye zisebenze:

• i-eriyali esenziwayo ifumana umqondiso kuphela ngenxa yokumila kwayo;
• i-amplifier ekhethekileyo inikezelwa i-antenna esebenzayo , eyandisa amandla omqondiso oluncedo.

I-eriyali esebenzayo kufuneka inikwe amandla ongezelelweyo avela kwinethiwekhi. Njengomthetho, isixhobo sokukhulisa siqhagamshelene sisebenzisa i-adapter ye-adapter ye-9 okanye 12 V. Ukuba isixhobo sifumaneka ngaphandle, ngoko kufuneka usigubungele emvuleni. Qinisekisa ukuba uthathela ingqalelo ulwazi kwimiyalelo yomenzi isilumkiso malunga nokwenzeka kokuphazamiseka ukuba ifowuni ifakwe ngokungalunganga. I-eriyali esenziwayo inokuguqulwa ibe yesebenzayo ngokongeza iamplifier kuyo. Olu khetho lunokuba lula ngakumbi kunokuba kuthengwa i-antenna ngesixhobo sokukhulisa esakhelwe ngaphakathi – xa kwenzeka ukuphuka kwe-amplifier, inokutshintshwa lula. Awukwazi ukuyibeka ecaleni kwe-antenna ngokwayo, kodwa kwi-attic okanye kwigumbi, eliya kuqinisekisa ubomi obude benkonzo yesixhobo.

Zenzele i-eriyali esebenzayo ngeamplifier yeTV yedijithali:

https://youtu.be/YfR9TgaDf1Q

TOP 6 Best Antenna Amplifiers for TVs

Ezinye i-amplifiers zithandwa ngenxa yokulula kwesixhobo sabo, ixabiso eliphantsi kunye nokufakwa lula. Ukuba kuyimfuneko, ungazibuyisela kwaye uzilungise. Xa uthenga i-amplifier yangaphandle, kufuneka unakekele ukuqina kwayo. Izixhobo zangaphandle zitshintshwa rhoqo emva kweminyaka emi-2 nokuba zikhuselwe. Ngenxa yesi sizathu, kungcono ukuzama ukufumana indawo yeamplifier phantsi kophahla.

I-antenna amplifier F-02

Isixhobo sokukhulisa isiqu samaza onke esiqhutywa yintambo. Iqhuba ukukhulisa umqondiso wethelevishini kwimitha kunye noluhlu lwe-decimeter kunye noluhlu lokusebenza (1-12 k) kunye ne-UHF (21-60 k). Ukuzuza – ukuya kwi-25 dB, umzobo wengxolo – ukuya kwi-2 dB, i-voltage yokubonelela – 12 V. Iindleko eziqikelelwayo – ii-ruble ezingama-350.

Delta UATIP-03 MV+DMV

Ukwandisa isixhobo esibanzi sokusetyenziswa komntu ngamnye kwimitha (ukusuka kwi-1 ukuya kwi-12 iziteshi) kunye ne-decimeter (i-21 ukuya kwi-69 channels) uluhlu. Ukunikezelwa kwamandla 12 V. Iindleko eziqikelelwayo – ii-ruble ezingama-672.

SWA-999 ye “grid”

I-Amplifier ye-antenna yasePoland (“igridi”) kunye ne-frequency range yokusebenza ukusuka kwi-48 ukuya kwi-862 MHz kunye nokunikezelwa kwamandla kwe-12 V. Gain – 28-34 dB. Iindleko eziqikelelwayo – ii-ruble ze-113. https://youtu.be/QvRGUGq_eOs

I-REMO USB NGAPHAKATHI (BAS-8102 5V)

I-eriyali yeamplifier yeenjongo ezininzi eguqula i-eriyali engenziwayo ibe yinto esebenzayo kwaye ikuvumela ukuba ukhuphe unikezelo lwamandla lweamplifier ye-eriyali. Ukuzuza – ukuya kuthi ga kwi-16 dB. Amandla – 5 V. Iindleko eziqikelelwayo – ii-ruble ezingama-245.

I-REMO Booster-DiGi (BAS-8207)

I-antenna amplifier enenzuzo ephakathi kwama-21-69 amashaneli. Unikezelo lwamandla – 12 V. I-Noise factor – ayikho ngaphezu kwe-2.8 dB. Iindleko eziqikelelwayo – ii-ruble ezingama-425.

Planar 21-69 FT series

I-antenna amplifier yentambo kunye noluhlu lwamaza ukusuka kwi-470 ukuya kwi-468 MHz kunye nokuzuza ukuya kwi-22 dB. Ukunikezelwa kwamandla – 12 V. Umfanekiso wengxolo – 4 dB. Iindleko eziqikelelwayo zingama-ruble angama-350.

Indlela yokwenza i-antenna amplifier yeTV ngezandla zakho?

Okokuqala kufuneka ulungiselele izixhobo kunye nezixhobo:

• ipleyiti ye-aluminium;
• ucingo lobhedu;
• isibiyeli
• iadaptha
• amantongomane, iibholiti, iiwasha, izikrufu zokuzicofa;
• intambo kamabonakude;
• ibhanti yerabha kwitrektara;
• iteyiphu yokukhusela;
• isikrufu ngesando.

Nangona unamava kulo msebenzi, isifundo esicacileyo semiyalelo siya kuba luncedo kakhulu. Okubaluleke kakhulu kulandelelwano lwezi zenzo kunye nenjongo yenkcukacha nganye. I-algorithm yezenzo imi ngolu hlobo lulandelayo:

1. Imingxuma iyasikwa (ezintathu kwirabha, enye kwipleyiti).
2. Kuya kufuneka kwakhona umngxuma kwisibiyeli kunye nendawo ye-eriyali.
3. I-wire kufuneka igobe kwaye idibaniswe kwiiphelo kunye ne-self-tapping screw.
4. Intambo ixhunyiwe kwi-adapter kwaye uxhumano lulodwa.
5. Zonke iinkcukacha ziyadibana. Ekugqibeleni, indawo yokunamathisela ikhebula ngocingo ifakwe kwi-tape yombane.

Isixhobo sokukhulisa esenziwe ngokwaso sinenye inzuzo – ukuba akuyimfuneko ukuqwalasela isixhobo esigqityiweyo. Idibaniswe ngokulula kakhulu: ibhodi ixhunyiwe kwi-antenna kwaye umgangatho wenzuzo uhlolwe. Ngexesha lokusebenza kwesixhobo akufanele kubekho ingxolo engaphandle. Kwi-amplifier, kungcono ukulungiselela uhlobo oluthile lwe-enclosure ukukhusela kwimpembelelo yendalo. Ukufumana umfanekiso kunye nesandi esihle, awuyi kufuna kuphela i-amplifier, kodwa kunye nokukhetha indawo efanelekileyo yokuxhoma. Uya kufuna kwakhona intonga yombane. I-Antenna yebhiya yeTV yedijithali eneamplifier: https://youtu.be/axJSfcThfSU

Ekuqaleni kokusebenza, kuyimfuneko ukubeka iliso umgangatho wokukhulisa umqondiso wethelevishini, kwaye ukuba kukho iingxaki, kufuneka zipheliswe ngokukhawuleza.

I-antenna booster ye-TV yakho iya kukunceda uthintele ukuphazamiseka kunye nezinye iingxaki ezinxulumene nolwamkelo olubi lophawu lweTV. Xa uthenga isixhobo, kufuneka ugxininise kwiikhrayitheriya ezininzi ezibalulekileyo, kwaye xa uzenza ngokwakho, ngokulandelelana okuchanekileyo kwezenzo kunye nokukhetha okufanelekileyo kwendawo yokufakela.