Antenna idabula: ukuthi isebenza kanjani futhi kanjani it exhunywe

amathelevishini ezimbili in the efulethini Ngamangala umuntu kunzima. Ubuchwepheshe, wenze isignali ethola idivayisi, nasenkathini yethu ngokushesha elokhu ivela, okuyinto kuthanda nakanjani nomthelela ekuncishisweni kwamacala amanani ku onobuhle amadala. Futhi lokhu, esikhundleni salokho, kuholela yokuthi ukuthi ithelevishini wesibili, ngisho yesithathu, ungakwazi ukukhokhela cishe yonke imindeni. Ngiyavuma, eqinisweni bonke okufanayo elula lapho ekhishini noma ungakwazi ukubukela izinhlelo zakho ozithandayo egumbini lakho, akekho ne ilungu lomkhaya wakubo lathi ngaphandle kokuphazamisa. Futhi kulokhu, kudingeka nakanjani le idabula lukamakhalekhukhwini.

Nemphambosi yekwentiwa: indlela yokwenza izinqumo ezinhle?

Musa noma ucabanga mayelana nokwenza okunye okucishe kufane nalokhu exhunywe kwi-pair antenna wire futhi ngaleyo ndlela uthole komunye umthombo. Ikhwalithi yesithombe ngenxa eyohlinzwa enjalo kungaba kubi kakhulu - kuyoba multi-loop, wehlise Ngokuphambene, njll Ngakho-ke kubalulekile ukuba usebenzise i-antenna isignali idabula, noma njengoba ngaphezulu edume ngokuthi, "crab".

Nxa isitshengiselo umthombo kuhle, okungase kunqunywe zibukeke, futhi phambi lendlu wawuyizingalo TV eyodwa kuphela, imodeli okuhle, eqoqwe ngesisekelo abahlukanisi resistive. Ukuthinta lolo luthi kubhekwa idabula yekwentiwa kanye, nakuba inikeza ofanayo ezinhle isibonakaliso, kodwa-ke kuletha amandla athile Damping ezilinganiselwe nesibalo okukhiphayo. Lolu hlobo is kahle elisungulwe edolobheni elikhulu noma idolobha eliseduze, lapho amandla ukusakaza siphakeme ngokwanele.

Ngakho, lapho reception ayiyinhle noma inani elikhulu abamukelayo kungaba ngcono ukusebenzisa esebenzayo antenna idabula hlobo. Ilungiselelo elinjalo ezidabula hhayi kuphela isiginali ye-TV engenayo, kodwa futhi sithuthukisa amandla ako.

Lapho uthenga idabula, unake izinga kwamazinyo, okuboniswe e-decibel angu njengoba idivayisi kakhulu lokubeka uphawu, futhi imiyalo eyayihambisana nalo. The ephansi ukubaluleka kwalesi Inkomba, ngcono. Uma imenyu ye-TV, ungabona ukuvama isiteshi wathola, khumbula ukubaluleka kunabo bonke kubo futhi uqiniseke ukuthi likhona ibanga lokuvama zedivayisi ekhethiwe.

Indlela uxhuma idabula isignali antenna

Odinga ukuxhuma TV yesibili ngaphezu zedivayisi ngokwayo - kungcono ikhebuli ithelevishini, obandayo kubakaki (uma ikhebula unamathele odongeni), ngommese obukhali, evamile roulette kanye antenna izixhumi (ngenani TV ezengeziwe). Kokuqala, khetha flat endaweni lapho idabula antenna izokwenziwa. Kungcono ukusebenzisa salolu isokhethi ekhethekile ogibele odongeni ikamelo. Khona-ke inani efanelekayo kwamamitha kusukela ngaleso sikhathi ukuba ngamunye TV ezimbili, fingqa, sifaka ambalwa amamitha kwi isitokwe futhi uthenge ilungelo obuphelele antenna ikhebula. Manje-ke kufanele uthathe izingcezu oyifunayo nge ummese zonke zazo ukususa emgodleni yangaphandle futhi eluka uzimisele kwangaphandle unit ongahluziwe. Ngemva kwalokho, esikhundleni ipulaki, esemgwaqweni ekupheleni esidala ikhebula coaxial ixhumeke idabula antenna, futhi ke - izingcezu pre-ezilungiselelwe samakhebula bonke amasethi ithelevishini. Khona-ke zonke lezi izintambo awashintsheki isandla kuya ukudla noma ikhebula isiteshi phansi. Into yokugcina kwesokunxele ukwenza - ukuba uvule yonke imishini futhi uhlole izinga isignali.