Yadda ake Gina DIY Mita 2 J-pole Eriya

Idan kuna neman ƙaramin farashi, da kuma sauƙi don gina eriya, eriyar J-pole yana da kyau! A cikin game da lokacin sa'o'i guda, da kuma kusan $15 na samfura, zaku iya samun eriyar j-pole mai ban sha'awa.

Eriyar j-pole gabaɗaya ƙarshen ciyar da rabin kalaman dipole ne wanda ke amfani da guntun guntun kalaman 1/4 gajere a matsayin mai juriya. Eriyar j-pole za ta ba da ɗan ƙasa da 3 DB na riba gaba ɗaya.

Samfurin da na zaɓa don gina eriyar j-pole shine bututun jan karfe 3/4 inch da ake amfani da shi don aikin famfo. Anan akwai shirye-shiryen haɓaka eriyar J-pole mai tsawon mita 2:

Ma'aunin da ke sama don sandar sandar J-pole ya kasance cikin inci. Ma'auni akan tsayin gabaɗaya, da tsayin stub daga tsakiyar layin bututu mai tsagewa (a kwance) zuwa saman eriya. Hanya a ma'auni shine inci 2 1/4 daga saman ɗan takara a kwance zuwa wurin mahaɗin. Matsakaicin tsakanin babban bangaren j-pole centerline da kuma tuning stub centerline shine 2 ″. Na yanke girman RG-8X kumfa coax zuwa tsayin 67 ″ don layin ciyarwa, kuma na ɗaga sama 4 yana juyawa (kananan yadda zaku iya samu) kawai an jera su a ƙasa madaidaiciya ɓangaren sashin daidaitawa. Wannan tabbas zai kawar da layin ma'aurata daga eriyar j-pole, da kuma taimakon samar da tsaro na walƙiya. Haɗa cibiyar jagorar coax zuwa al'amari na farko, da kuma mai gadi zuwa stub ɗin kunna j-pole.

A cikin dukkan matakan da ke sama, za a yi la'akari da su game da farawa don gina j-pole. Na ɗan ɗanɗana coax ɗin ta amfani da matsin bututun inch 1, da kuma daidaita haɗin coax da farko zuwa SWR mafi ƙasƙanci. Daga can, Ina daidaita tsawon babban al'amari na J-pole. Bayan haka na fara ta hanyar sake daidaita mahadar coax.