TV kanyanga: muchidimbu

Pari, musha wose ane mumwe kana kupfuura materevhizheni. Nokuti sangano kutepfenyura terevhizheni anonongedzera vanoda imwe kanyanga. Kune mhando dzakawanda pakugamuchira mano. Vari zvakapatsanurwa maererano nechinangwa, mhando dzose vakapiwa anonongedzera, chimiro, ukuru uye zvichingodaro. Nyaya hurukuro yedu nhasi richava kugamuchira terevhizheni antennas.

Mumwe nomumwe wedu muupenyu hwedu mune imwe nzira kana imwe tatarisana namano izvi. The TV kanyanga iri simbi mamiriro, dzaiwanzogadzirwa aruminiyamu, nokuti pakugamuchira redhiyo chiratidzo. Zvichienderana zvaimirirwa akagamuchira terevhizheni siyana, ivo vanokamurwa vakapinda mita uye decimetre mudziyo. mugove wavo chokugadza nzvimbo nenzvimbo uye Outdoor kushandiswa. By pokushandisa nzira terevhizheni chiratidzo kanyanga kungava tichishingaira kana pusa.

Funga Mhando chikuru vagamuchiri:

1. Dipole kana akatsemura vibrator. Vane kota-wave, hafu-wave uye wave. Yokupedzisira unoenderana urefu vibrator wavelength pakati chiratidzo iri vakagamuchira; pa hafu-wave - hafu chiratidzo; uye ukuwo, panguva muzvina - muzvina. Y dipole mamirire impedance iri ohms 300, kuti anobvumirana aine TV kanyanga wire uye mugamuchiri iri mudzidzi ezvinhu vanowanzoshandisa hafu-wave enzanirana loop. Nokuti zvose waya terevhizheni aerials kuderera ndiyo maitire impedance pamusoro 75 ohms. Dipole, chokwadi, chinhu analoginen kamuri kanyanga.

2. TV-kanyanga mhando "chinozunguzirwa mugero" rinogona kuva: maviri akaumbwa,-chidimbu matatu, quintuple, semielementnoy, odinnadtsatielementnoy uye shestnadtsatielementnoy. Akapeta dipole oga asina kushandiswa, ndizvo kushingaira che ichi mhando antennas. Kanyanga "chinozunguzirwa gwara" inoumbwa yezviri chinhu (vibrator vakawanda loop), uye pusa okunze, reflector uye vatungamiriri akatasva vanhuwo ruoko. Director - kungotarisa dipole, riri pamberi nemhepo maatomu akafanana. Reflector - a vibrator riri shure zvinoshingaira. In ichi mhando antennas, pane chimwe chinetso chete kuwedzera pusa zvinhu kuti chinozunguzirwa vibrator zvinoderedza mazano impedance yacho kanyanga. Vagamuchiri kwakadai mune radar uye redhiyo kutaurirana namano.

3. A-Periodic danda kanyanga terevhizheni iri Broadband mudziyo, ichipa kugamuchirwa anonongedzera ari kakawanda siyana (UHF mafungu uye mita). Nekubata siyana ane Zvakanyanya Kunaka Panguva Yepamuviri enzanirana pamusoro kanyanga uye feeder, sezvamakaropafadzwa fuma anoramba achitsungirira.

4. Pakuumbwa terevhizheni kanyanga chakagadzirirwa kugamuchira anonongedzera muzviitiko apo kanyanga "Yagi" asingakwanisi kupa inogutsa chiratidzo unhu. Ko kaviri kana katatu pachivara. Mano ichi mhando rinobatanidza yakakwirira pfuma uye nyore design, regai zvinoda kuchinja.

5. The danho iri-nesefa chinhu chisinganzwisisiki achitaura gadziriro zvinosanganisira omnidirectional antennas izvo akaparadzaniswa zviri muchadenga, ivo vakaronga kuti chokutambudzika anonongedzera vakaenzana zvose. Kazhinji, vakaunganira kuna dzakafanana antennas dzinongoda ari muzvizhinji kuti mitsara uye chokuita electronic chikwata. Common-rudzi vagamuchiri vari TV kanyanga pamwe gudzazwi.

In mhedziso, tichiti kune kanyanga kusarudza inofanira kuswedera nomumwe, zvichienderana omunharaunda nenzvimbo ezvinhu ari kugadzwa nzvimbo uye aida mugumisiro.