Antenna amplifier kwa TV: mfundo ntchito, kusankha, DIY

Vuto la chizindikiro cha TV chosakwanira bwino, chifukwa chomwe chithunzi chazithunzi pa TV chimachepetsa, chimathetsedwa mothandizidwa ndi amplifier yochokera ku antenna ya TV. Mukhoza kusankha chipangizo choyenera kuchokera pazithunzi zathu zabwino kwambiri kapena, ngati muli ndi chidziwitso, pangani chipangizo choterocho nokha.

Kodi TV Antenna Amplifier ndi chiyani?

Kanema wa kanema wawayilesi ndi chida chokulitsa chizindikiro cha kanema wawayilesi ndikuchepetsa kusokoneza, zomwe zimapereka chithunzi chabwino. Chipangizochi chimathandizira kukulitsa chidwi, chocheperako ndi zotsatira zaphokoso, ndikubwezera kutayika kwa chizindikiro cha kanema wawayilesi mu chingwe cha coaxial. https://youtu.be/GI89hrNQ-BA

Mapangidwe a amplifier a antenna

Ma amplifiers a tinyanga ta pa TV ndi osavuta ndipo amatha kusiyanasiyana pamapangidwe, amatha kukulitsa ma siginecha a digito ndi analogi. Nthawi zina, amapangidwa ndi matabwa awiri omwe ali ndi dera lochepetsera phokoso. Dera limodzi ndi fyuluta yothamanga kwambiri, yachiwiri imakhala ndi capacitor yowongolera pafupipafupi. Wowongolera amathandizira kupeza phindu lalikulu la ma TV a 4.7 dB ndi ma frequency opangira 400 MHz. Kuti apeze bata, amagwiritsa ntchito stabilizer ndi electrolyte ndi mlatho wa diode womwe umaphatikizidwa mu dera lake. Amplifier imalumikizidwa ndi wolandila TV pogwiritsa ntchito capacitor. Ma amplifiers onse a mlongoti ali ndi magetsi, malo okhawo amasiyana (omangidwa mkati ndi kunja). Chipangizo chomangidwira chimagwira ntchito bwino ndi magetsi okhazikika ndipo chimawononga mpaka 10 V. Ngati chipangizocho chayaka, muyenera kusintha chipangizo chonsecho. Pachifukwa ichi, pamaso pa kuwonjezereka kwa mphamvu, zidzakhala zosavuta kugwiritsa ntchito mayunitsi akunja. Zili zazikulu kukula kwake ndipo zimakhala ndi magetsi osiyanasiyana olowera kutengera amplifier (5, 12, 18, 24 V).

Gulu

Pamafunde apadziko lapansi amakanema a TV, ma frequency angapo a mita (MV) ndi decimeter (UHF) amagwiritsidwa ntchito. Choyamba, mafupipafupi a 30-300 MHz amagwiritsidwa ntchito, ndipo chachiwiri – 300-3000 MHz. Kutengera kuchuluka kwa ma frequency omwe amalandila, amplifier imatha kukhala:

• Broadband – kuphimba mafunde ambiri;
• osiyanasiyana – amagwiritsa ntchito mita kapena decimeter kuti agwire ntchito;
• multibanddesigned pamagulu onse awiri.

Nthawi zambiri, ndi chizindikiro chabwino, amplifier ya Broadband ndiyokwanira. Polandirira bwino, ndikofunikira kugwiritsa ntchito chipangizo chongoyang’ana pang’ono, chomwe chimagwira ntchito yake mumtundu winawake kuposa burodibandi.

Kuwulutsa kwa digito kumachitika pogwiritsa ntchito muyezo wa DVB-T2 . Pamakanema a digito, mtundu wa UHF wokha ndi womwe umagwiritsidwa ntchito, kotero chokulitsa cha digito cha TV ya DVB-T2 ndichoyenera kuwulutsa pawayilesi pa TV. Mayeso a antenna amplifier pa kanema wawayilesi wa digito wa DVB-T2: https://youtu.be/oLRaiYPj6sQ Amplifiers amasiyananso malinga ndi mphamvu yofunikira:

1. Ma volts khumi ndi awiri ndiofala kwambiri. Adzafuna kuwonjezeredwa kwa magetsi owonjezera, omwe nthawi zina amatha kuwongolera.
2. Ma volt asanu amatha kulumikizidwa ndi chochunira cha TV kapena TV pogwiritsa ntchito chingwe cha coaxial. Monga lamulo, iwo amaikidwa pa antenna.

Kutengera ndi mtundu wa kanema wawayilesi, zida zokulitsa zimagawidwa motere:

• mlongoti;
• satellite;
• chingwe.

Ma Cable ndi satellite amplifiers amagwiritsidwa ntchito kawirikawiri, chifukwa amatumiza kale chizindikiro chapamwamba kwambiri. Nthawi zina amplifier amagwiritsidwa ntchito pa chingwe TV ngati chingwe chikugwirizana ndi ma TV angapo nthawi imodzi. Zida zokulitsa za antenna zimagwiritsidwa ntchito nthawi zambiri.

Ubwino ndi kuipa kwa ma TV amplifiers

Mukakhazikitsa kanema wawayilesi wapanyumba, muyenera kukumbukira: ngati mugwiritsa ntchito mabwalo angapo okulitsa, ndiye kuti padzakhala kusokonekera kwakukulu kwamavidiyowo. Pachifukwa ichi, chiwerengero cha amplifiers antenna chiyenera kukhala chochepa.

Zochita za amplifier zikuphatikizapo:

• kutha kulandira ngakhale zizindikiro zofooka za TV;
• kukhalapo kwa ma coefficients ang’onoang’ono a phokoso;
• kuthekera kokulitsa chizindikiro nthawi imodzi mumayendedwe angapo.

Kuipa kwa zida zokulitsa ndi:

• ngati burodibandi amplifier ntchito, pali kuthekera kuchulukirachulukira chololeka TV siginecha mlingo, choncho ayenera kukhala okonzeka ndi owongolera osiyanasiyana osiyanasiyana kuthetsa vuto;
• kudzikonda excitability wa chipangizo;
• kukhudzidwa ndi mphepo yamkuntho;
• kuthekera kwa kutayika kwa ma siginecha a TV pakutulutsa.

Amplifiers amakonza chizindikiro kuchokera ku mlongoti kupita ku TV. Pachifukwa ichi, kusankha kumakhudzidwa ndi malo ndi kufunikira kwa zipangizo za TV. Amplifier ku mlongoti wa TV kunja kwa mzindawo kumathandiza kuthetsa vuto lovuta lopeza chizindikiro cha televizioni chapamwamba.

Njira yayikulu yosankha ma amplifiers a wailesi yakanema

Amplifier ya mlongoti wa kanema wawayilesi amasankhidwa malinga ndi luso la chipangizocho komanso malinga ndi zinthu zakunja (mwachitsanzo, malo ndi kukhazikitsa). Chofunikira kwambiri ndikuganizira mawonekedwe omwe amakhudza mawonekedwe a kanema wawayilesi, omwe amagwiritsa ntchito zida zowonjezera.

Ma frequency osiyanasiyana ogwiritsira ntchito

Pali zida zitatu zomwe zimagwirizana ndi kuchuluka kwa ma frequency: TV, mlongoti , ndi amplifier. Choyamba, mlongoti umasankhidwa. Pakusankhidwa uku, ndikofunikira kuganizira zapamwamba zomwe zimayendetsedwa pang’onopang’ono pamitundu yayikulu potengera mphamvu yazizindikiro. Ngati wobwerezabwereza ali pafupi ndi malo olandirira alendo, ndiye kuti “wave-wave” ndi yoyenera, yomwe imatha kuphimba malo ambiri. Kulandira chizindikiro kuchokera ku nsanja yakutali ya TV kungapezeke pogwiritsa ntchito chipangizo chosinthidwa kuti chikhale chochepa (mwachitsanzo, VHF kapena UHF).

Malinga ndi kuyankha pafupipafupi kwa mlongoti, amplifier amasankhidwa. Ngati mzerewu sukugwirizana, chipangizo chomwe chilipo sichingathe kugwira ntchito.

Chithunzi chaphokoso

Mothandizidwa ndi amplifier, chiŵerengero cha signal-to-noise chiyenera kusinthidwa mmwamba. Popeza kuti chipangizo chilichonse chimalandira phokoso lake panthawi yotumizira deta, pamene chizindikirocho chikuwonjezeka, iwonso amakhala ofunika kwambiri. Nthawi zambiri amavomereza kuti phindu la phokoso siliyenera kupitirira 3 dB. Pokhapokha ngati titha kulankhula za zitsimikizo zamtundu wabwino wa kufalikira kwa ma TV. Komabe, zida zatsopano zitha kukhala ndi mtengo wotsika wa 2 dB.

Kupindula

Kukhalapo kwa coefficient yapamwamba kwambiri sikutsimikizira kufalikira kwabwino. Kuphatikiza apo, ndikukulitsa kwambiri, chizindikiro cha TV chidzasokonezedwa ndi zotsatira zina (kudula kapena kudzaza). dB imagwiritsidwa ntchito kuyeza parameter, ndipo mfundo zake ndi:

• decimeter – kuchokera 30 mpaka 40 dB;
• mita – 10 dB.

Kuchokera pa izi zikutsatira kuti decimeter idzakhala ndi kufalitsa kuchokera ku 20 mpaka 60 njira za TV, ndi mamita – osapitirira 12. Ndi kuwonjezeka kwa phindu la 15-20 dB, tikhoza kulankhula za zotsatira zabwino.

Posankha amplifier ndi chinthu, muyenera kukhazikika pazikhalidwe zenizeni komanso mulingo wolandirira. Monga lamulo, mtunda wochokera ku nsanja ya TV (relay) umaganiziridwa. Ngati TV nsanja ili mu mzere wolunjika, ndiye kugula amplifier sikufunika.

Mlongoti wokhazikika kapena wongokhala

Ma Antennas olandila chizindikiro cha TV amatha kukhala osakhazikika komanso ogwira ntchito:

• mlongoti wongokhala umalandira chizindikiro kokha chifukwa cha mawonekedwe ake;
• amplifier yapadera imaperekedwa kwa antenna yogwira , yomwe imawonjezera mphamvu ya chizindikiro chothandiza.

Antenna yogwira ntchito iyenera kupatsidwa mphamvu zowonjezera kuchokera pa intaneti. Monga lamulo, chipangizo chokulitsa chimagwirizanitsa pogwiritsa ntchito adaputala 9 kapena 12 V. Ngati chipangizocho chili kunja, ndiye kuti muyenera kuchiphimba ndi mvula. Onetsetsani kuti mumaganizira zambiri zomwe zili mu malangizo a wopanga zochenjeza za kuthekera kwa kusokoneza ngati chipangizocho sichinayikidwe molakwika. Mlongoti wokhazikika ukhozanso kusinthidwa kukhala yogwira ntchito powonjezera amplifier kwa iyo. Njira iyi ikhoza kukhala yabwino kuposa kugula mlongoti wokhala ndi chipangizo chokulitsa – pakawonongeka kwa amplifier, imatha kusinthidwa mosavuta. Mutha kuziyika osati pafupi ndi mlongoti wokha, koma m’chipinda chapamwamba kapena m’chipinda, zomwe zidzatsimikizira moyo wautali wautumiki wa chipangizocho.

Dzichitireni nokha mlongoti wokhazikika wokhala ndi chokulitsa cha TV ya digito:

https://youtu.be/YfR9TgaDf1Q

TOP 6 Antenna Amplifiers Abwino Kwambiri pa TV

Ma amplifiers ena ndi otchuka chifukwa cha kuphweka kwa chipangizo chawo, mtengo wotsika komanso kuyika kosavuta. Ngati ndi kotheka, mukhoza kusintha ndi kukonza iwo. Mukamagula amplifier panja, muyenera kusamalira kulimba kwake. Zida zakunja zimasinthidwa zaka 2 zilizonse ngakhale zitatetezedwa. Pachifukwa ichi, ndi bwino kuyesa kupeza malo amplifier pansi pa denga.

Mkulu wa Antenna F-02

Chida chokulitsa chamtundu uliwonse choyendetsedwa ndi chingwe. Imakulitsa chizindikiro cha kanema wawayilesi pamamita ndi ma decimeter osiyanasiyana (1-12 k) ndi UHF (21-60 k). Kupindula – mpaka 25 dB, chiwerengero cha phokoso – mpaka 2 dB, magetsi operekera – 12 V. Mtengo woyerekeza – 350 rubles.

Delta UATIP-03 MV+DMV

Kukulitsa chipangizo cha burodibandi kuti munthu agwiritse ntchito mita (kuyambira 1 mpaka 12 njira) ndi ma decimeter (makanema 21 mpaka 69). Mphamvu yamagetsi 12 V. Mtengo woyerekeza – 672 rubles.

SWA-999 ya “gridi”

Amplifier ya antenna ya ku Poland (“gridi”) yokhala ndi maulendo othamanga kuchokera ku 48 mpaka 862 MHz ndi mphamvu ya 12 V. Gain – 28-34 dB. Chiyerekezo mtengo – 113 rubles. [id id mawu = “attach_376” align = “aligncenter” wide = “600”]
Eurosky SWA-999 Amplifier[/caption] https://youtu.be/QvRGUGq_eOs

USB YAM’NKHA YA REMO (BAS-8102 5V)

Antenna multi-purpose amplifier yomwe imasintha mlongoti wokhazikika kukhala yogwira ntchito ndikukulolani kuti muchotse magetsi a amplifier antenna. Kupeza – mpaka 16 dB. Mphamvu – 5 V. Mtengo woyerekeza – 245 rubles.

REMO Booster-DiGi (BAS-8207)

Amplifier ya antenna yokhala ndi phindu lapakati pa mayendedwe 21-69. Mphamvu yamagetsi – 12 V. Noise factor – osapitirira 2.8 dB. Chiyerekezo mtengo – 425 rubles.

Planar 21-69 FT mndandanda

Amplifier ya mlongoti wa chingwe chokhala ndi ma frequency osiyanasiyana kuchokera ku 470 mpaka 468 MHz ndi kupindula mpaka 22 dB. Mphamvu yamagetsi – 12 V. Chithunzi cha phokoso – 4 dB. Mtengo wake ndi ma ruble 350.

Momwe mungapangire amplifier ya antenna pa TV ndi manja anu?

Choyamba muyenera kukonzekera zida ndi zida:

• mbale ya aluminiyamu;
• waya wamkuwa;
• bulaketi;
• adaputala;
• mtedza, mabawuti, washers, zomangira pawokha;
• chingwe cha televizioni;
• lamba lamba kuchokera pa thirakitala;
• tepi yotetezera;
• wrench ndi nyundo.

Ngakhale mutakhala ndi chidziwitso pantchito yotereyi, kuphunzira mwatsatanetsatane malangizowo kudzakuthandizani kwambiri. Chofunika kwambiri ndi ndondomeko ya zochitikazi ndi cholinga cha tsatanetsatane uliwonse. Algorithm ya zochita ndi izi:

1. Mabowo amadulidwa (atatu mu rabara, imodzi mu mbale).
2. Mufunikanso dzenje mu bulaketi ndi mlongoti.
3. Waya uyenera kupindika ndikulumikizidwa kumapeto ndi zomangira zokha.
4. Chingwecho chimagwirizanitsidwa ndi adaputala ndipo kugwirizanako kumakhala kwapadera.
5. Zonse zimabwera palimodzi. Pamapeto pake, malo opangira chingwe ndi waya amatsekedwa ndi tepi yamagetsi.

Chipangizo chodzipangira chokha chili ndi mwayi wina – kuti sikoyenera kukonza chipangizo chomalizidwa. Zimagwirizanitsidwa mophweka: bolodi imagwirizanitsidwa ndi mlongoti ndipo ubwino wa phindu umafufuzidwa. Panthawi yogwiritsira ntchito chipangizocho pasakhale phokoso lachilendo. Kwa amplifier, ndi bwino kukonzekera mpanda wamtundu wina kuti uteteze ku chilengedwe. Kuti mukhale ndi chithunzi chabwino komanso phokoso, simudzasowa amplifier, komanso kusankha malo oyenera okwera. Mudzafunikanso ndodo yamphezi. Antenna ya Beer ya digito TV yokhala ndi amplifier: https://youtu.be/axJSfcThfSU

Kumayambiriro kwa ntchito, m’pofunika kuyang’anitsitsa ubwino wa kukulitsa chizindikiro cha televizioni, ndipo ngati mavuto achitika, ayenera kuchotsedwa nthawi yomweyo.

Chowonjezera cha mlongoti cha TV yanu chidzakuthandizani kupewa kusokonezedwa ndi mavuto ena okhudzana ndi kulandila ma siginecha a TV. Mukamagula chipangizo, muyenera kuyang’ana pazifukwa zingapo zofunika, ndipo mukamadzipangira nokha, pazotsatira zoyenera komanso kusankha koyenera kwa malo oyika.