Indlela yokwenza i-antenna ye-TV?

Ukuze ukwazi ukubuka i-TV ku- TV, udinga ukuyixhuma ku-antenna. Kwenzeka ukuthi ngesizathu esithile awunayo i-antenna: kungenzeka ukuthi awunaso isifiso noma izindlela zokukhokha izinsizakalo zomthumeli wethelevishini, noma uweduze kwedolobha, lapho i-TV ingabonisi khona ngaphandle kokuthola ngaphandle kwe-signal ngendlela ye-antenna.

Ukuze ukwazi ukubuka i-TV ngaye, udinga i-antenna. Yiqiniso, uma kunezindlela ezilula futhi ngokushesha ukuzithenga esitolo. Kodwa ungahamba ngenye indlela. Mayelana nendlela yokwenza i-antenna ye-TV ngezandla zakho uzokutshela ngokuqhubekayo.

Uma wenza i-antenna ngayinye ngokwakho, uzokwazi ukubuka ivolumu elincane lamashaneli we-TV nakwekhwalithi embi, kodwa ngokuphelele mahhala.

I-Indoor HDTV i-Antenna

Njengoba wenze i-antenna ngokwakho, ungathola isignali esivela kumbhoshongo wethelevishini ku-range 470-790 MHz.

Ngaphambi kokwenza i-antenna ecingweni, izinto ezilandelayo kufanele zilungiselelwe:

• ummese;
• I-Scotch tape;
• umgxakishi;
• i-roulette;
• ukunamathisela;
• isisindo;
• umaka;
• ukuhlunga;
• amakhadibhodi.

1. Phrinta ithemplate ephepheni bese uyiqeda.
2. Sika isibonakaliso sekhadibhodi elinganisa u-35 cm (ukuphakama) ngo-32.5 cm (ububanzi). Siyifake nge-foil.
3. Sifuna okuphakathi futhi sihlukanise ama-rectangles amabili amancane.
4. Kusuka kuthempelini sabeka imininingwane emakhadini.
5. Ungapenda imininingwane kunoma yimuphi umbala.
6. Manje susa iphethini le-foil.
7. Ukuze ugobe ngesikhathi sokukhishwa, yenza ukuqubuka okuncane.
8. Sifaka lesi sithombe esikhwameni se-antenna, okuthiwa yi "butterfly".
9. Ake siqale ukuhlanganisa i-antenna. Ekude ka 3.5 cm kusukela ekuboniseni sibamba i-butterfly.
10. Phakathi nevemvane sibheka izimbobo zekhebula.
11. Sifaka i-transformer efanayo ukusuka ku-300 ukuya ku-75 Ohm.
12. I-Antenna yokusetshenziswa ekhaya isilungile.

I-Antenna ye-dacha izandla

I-Antenna yokuhlala ehlobo yenziwe ngendlela ye-lattice. Okokuqala silungiselela ukusungula:

• ucingo lethusi olububanzi obuyi-4 mm nobude bamamitha amane;
• ububanzi bebhodi ngamamentimitha angu-7 nobude buka-55 cm;
• ipulaki;
• izikrini eziyishumi;
• umbusi;
• ipensela elula;
• umthamo wesentimitha;
• i-soldering iron.

1. Kusukela ebhodini senza umsebenzi wobuchwepheshe ngokulandela uhlelo olulandelayo.

2. Ubukhulu besithombe buphakathi kwamasentimitha. Kudingeka zihunyushwe ngamasentimitha:

• 3/4 "= 2 cm;
• 1 "= 2.5 cm;
• 2 "= 5 cm;
• 2 5/8 "= 6, 66 cm (angenza u-6.5 cm);
• 5 ¼ "= 13, 33 cm (yenza 13 cm);
• 22 "= 55 cm.

3. Intambo yethusi inqunywa ubude obuyizingalo eziyi-37,5 cm ngamunye (15 amayintshi).

4. Ukuze uxhumeke esikhathini esizayo, phakathi kwenethiwekhi ngayinye kufanele ihlulwe.

5. Sika izintambo ezimbili ze-22 cm bese uhlanza emhlanganisweni.

6. Ezinye izintambo zigoba ngencwadi "V". Ibanga phakathi kwemikhawulo kufanele libe ngamasentimitha angu-7.5.

7. Hlanganisa i-antenna njengoba kuboniswe esithombeni ngezansi.

8. Thatha ipulaki bese uxhuma i-antenna ngekhebula.

9. Ingaphansi kwekhoyili kufanele idayiswe kwikhebula.

10. Namathisela ipulaki ebhodini.

11. I-antenna yokuthola iziteshi ze-TV ezweni lilungele ukuthola isignali.

Indlela yokwenza isithombeni se-antenna?

Uma usebenzisa i-antenna eyenziwe ngokwenziwe e-dacha, udinga ukusebenzisa isinamasi ngokunamathiselwe kwayo kwangaphandle. Ungenza futhi ngokwakho. Kulokhu, amapayipi ensimbi afanelekile.

• Sithatha amapayipi amabili bese sibamba phansi.
• Sidonsa izimbobo ohlangothini ngalunye bese ufaka ibha yokuqiniswa kwensimbi.
• Ngenduku "yocingo" i-mast ngokwayo noma umkhono wepayipi.
• Kulesi sleeve, ungafaka noma iyiphi inombolo yamapayipi. Siwanamathisela ngekhebula lensimbi. Ngakho-ke, ukuphakama kwe-mast yokulungisa i-antenna kungenziwa nganoma iyiphi ngokuyilula ngamapayipi engeziwe.

Yenza i-antenna indlu noma indlu ayiyona inzima kakhulu. Kwanele ukuba izinto ezidingekayo zisondele. Futhi isikhathi sokukhiqiza ngeke sibe imizuzu engaphezu kwengu-30. Kodwa uzoba nomshini osebenzayo wokuthola isignali ye-TV, eyenziwe yedwa , futhi umbuzo uzoxazululwa, kunokuba uthathe ingane engozini yemvula ..