Kungoita DIY yeNVIS Antenna AKA Cloud Burner Antenna Uchishandisa Mag Mount

Chikamu chekuve mutyairi weredhiyo ham kupa kutaurirana munguva dzenjodzi. Nekuuya kweOhio NVIS Antenna Day, ndakasarudza kutarisa muNVIS antennas. NVIS antennas, anowedzera kunzi Near Event Vertical Skywave antennas ane yakakwira kona yemwaranzi. Chimwe chinhu pakurongeka kwe60 madhigirii, kunanga ku90 madhigirii. Kusiyana neUHF neVHF masiginecha, ayo anowanzo kuve ne50-mamaira renji ine yagi antenna kumusoro, uye zvakare NVIS antenna inoitirwa kupindirana mu75-- 500-mamaira akasiyana. Dzimwe nguva antenna yeNVIS inodaidzwa kunzi "gore heater" sezvo ichifambisa yakawanda yemwaranzi yayo kumusoro kupfuura antenna yenguva dzose.

Pfungwa ine antenna yeNVIS ndeyekuburitsa simba rakawanda sezvinobvira pakona yakakwira uyezve kuita kuti riratidzike kubva pane ionosphere. Kubva pamaonero anoshanda, kutaurirana kweNVIS kunoitika pa10 MHz pamwe nepazasi. Chimwe chikamu cheNVIS antenna ichokwadi chekuti yakadzikira pasi. Izvi zvinobatsira zvinoburitsa chiratidzo pakona yakakwira, pamwe nekuita kuti zvive nyore kuburitsa. Kune akawanda maonero maererano nekukwirira kwakanyanya kweNVIS antenna, zvisinei, munhu wese anoita seanogara paapprox. 1/8 wavelength pamusoro pevhu uye kazhinji zvishoma.

Ini ndaida antenna yeNVIS yaitakurika, iri nyore kumisikidza, pamwe nemutengo wakaderera (zvechokwadi). Pakupedzisira, ndakanga ndava nezvose zviri nyore. Kune antenna yangu yeNVIS, ndakatanga nenzvimbo yangu yemamita maviri emota yangu. Pashure paikoko, yaingova bedzi nhau yokunamira tambo yekota-wave pagomo remag, ipapo kungoisa tambo yakati sandara kubva panzvimbo yemagi pamuti kana kuti danda rorudzi rwakati.

Ndaishuvira kukwanisa kubatana kunzvimbo yemag nekukasira. Ndakagadzira clip-yakatakura bhatiri clip. Asi kwete chero bhatiri clip. Yakanga yave nekwaniso yekumira kune yakasimba yakatwasuka-kudhonza pasina kubva pane mag gomo antenna. Zvandaifunga zvinoratidzwa mumufananidzo wakanyorwa pazasi:

Dzimwe nguva aya anonzi Crocodile battery Clips, kana Test Clips. Ndakasarudza zvangu pachitoro chenzvimbo dzemotokari dzeNAPA. Kune maviri akasiyana saizi. Iwe unozofanirwa kuve nechokwadi chekuti shaya dzinokura zvakaringana kuchengetedza pagadziko remag install yauchange uchishandisa.

Saka parizvino ingori nyaya yakapusa yekubatanidza tambo pane iyi clamp. Ndakatora kuti ndibudise sikuruu kuseri kwechisungiso pamwe nekutsveta tambo neburi ndokutengesa tambo patambo. Izvi zvinobatsira zvinopa kuoma kwakawanda sezvo chibatanidza ichi chinenge chiri pasi pekunetsekana.

Pazasi pane mufananidzo wenhare yangu yeNVIS antenna pamusoro peJeep yangu ichishandisa mag nzvimbo:

Nezvekureba kwewaya yekushandisa, semuenzaniso, ndiri kushandisa makumi mana emamita eOhio NVIS Antenna Day. Mumwe angatenda zvechokwadi kuti fomula yechinyakare yekota wavelength vertical ingashanda. Zvisinei, zvinoita sokuti hazvisi zvechokwadi. Tichifunga kuti iyi antenna yeNVIS ipfupi uye padyo nemota, kuedza kwangu kwekutanga kushandisa fomula 40/ freq. kuti ndiwane saizi yewaya yakandipa vibration ye234 MHz. Nenzira, kuve neMFJ antenna analyzer inobatsira zvakanyanya neiyi maitiro. Saka ndakashongedzerwa neruzivo urwu, ndakaita zvekumashure kufunga uye ndakafunga zvangu nguva dzose yekuverenga hurefu chaihwo hwemhando iyi yeNVIS antenna. Izvi hazvireve kuti izvi zvakakandwa mudombo, asi izvi ndizvo zvakandibatsira, panguva ino.

Iyo nyowani nyowani yandagadzira ndeiyi inotevera:

Kureba (ft.) = 261/ F (mhz).

Pazasi pane mumwe mufananidzo weNVIS antenna yangu yakaiswa zvachose. Cherechedza kuti kumucheto ndiri kushandisa 2 4 ft. mauto efiberglass tende mapango andakabata munharaunda yako.

Mhedzisiro yangu yekutanga inoratidza kuti inoita seinoshanda nemazvo kune antenna yeNVIS. Iniwo ndichave ndichisanganisira 75-mita gumbo kune setup mune ramangwana zvakare. Iyo inyaya yakapusa yekugovera tambo, kusanganisira iyo clamp yekubatanidza kune mag install, pamwe nekusunungura.

Ichi chinyorwa chipfupi chakatanga kuiswa pa www.mikestechblog.com Chero mhando yevaraidzo pane chero imwe saiti inorambidzwa pamwe nemhosva yemitemo yekodzero.