Momwe Mungapangire Mlongoti Woyima wa 2 Meter?

Ndinafunika kusintha mlongoti wanga wakale wa 2 Meter 1/4 wave vertical antenna wa 146 mHz. wailesi ya amateur. Yakale inali itataya ma radial komanso sindinathe kugunda obwereza mawayilesi ambiri omwe amangozungulira. Chifukwa chake pokhala yemwe amakonda kupanga tinyanga, pansipa ndi zomwe ndidapanga. Chithunzi chomwe chili pansipa chikukonza zinthu zomwe mungafunike kuti mupange mlongoti woyimirira wa 2 mita 1/4 wa 146 mHz. wailesi ya amateur.

Pansipa pali mndandanda wazinthu zofunika kupanga mlongoti woyima wa mita 2:

• 3/4 ″ chitoliro cha PVC-- Kutalika kuti zigwirizane
• 3/4 ″ adaputala 8xMPT
• 3/4 ″ THD Dome Cap
• Chithunzi cha SO-239
• 6ft pa. 14 GA chingwe cha Romex
• qty. 4 4-40 zomangira zosapanga dzimbiri
• qty 8 4-40 mtedza wosapanga dzimbiri
• 50 ohm coax Utali kuti ufanane

Njira yotsika mtengo komanso yoperekedwa mosavuta kuti mupeze 14 ga. waya wamkuwa ndi kupita ku sitolo ya zida ndikupeza chingwe cha Romex. Chinthu choyamba kuchita ndikuchotsa chingwe chamkuwa kuchokera ku chingwe cha Romex, pambuyo pake mudzawona chingwe chopanda kanthu, chingwe chakuda ndi choyera. Kenako vulani zingwe zakuda ndi zoyera. Mukamaliza, muyenera kukhala ndi zingwe zitatu zamkuwa zopanda 3 ft. 6 GA. chingwe mwina chinali chabwinoko, chifukwa chinali chachikulu komanso cholimba, komabe ndidagwiritsa ntchito zomwe ndidanyamula pamanja. Dulani zidutswa 12 za chingwe, iliyonse 5 in.

Kenako ndinakonza chingwe chilichonse mmene ndingathere, komabe sizinali zolondola. Choncho ndinayala matabwa pansi motalika pang’ono kuposa zingwe, n’kuika waya umodzi pa bolodi, ndikuikanso thabwa lina kuwonjezera pa waya. Kenaka ndinadalira bolodi komanso ndikugudubuza chingwe pakati pa matabwa. Izi zidawapangitsa kukhala olondola popanda zokhota zazing'ono zovutitsa mu chingwe.

Kenako, ndidatenga 3/4 ″ THD Dome Cap ndikubowola nayo 5/8 ″ dzenje. Ndinayamba ndi 5/32 ″ kubowola monga kutsegulira kwa woyendetsa ndege, kenako ndinamaliza ndi 5/8 ″ speedbor spade bit.

Kenako ndidatenga zinthu 4 za chingwe chamkuwa, chomwe chidzagwiritsidwa ntchito popangira ma radiyo a mlongoti, ndikupindikanso mbedza pang'ono kumapeto kwina, kenako ndikusuntha nsonga imodzi ya 4-40 mu mbedza ya chingwecho pambuyo pa kinky pansi pa chingwecho. kuzungulira wononga monga tawonera pachithunzichi.

Tengani mawaya/ wononga gulu lomwe mwangopanga kumene, ndikuyika wononga pakona ya cholumikizira cha SO-239. Chitani izi pamakona onse a cholumikizira cha SO-239. Mukamaliza, ziyenera kuwoneka ngati chithunzi chomwe chili pansipa. Onetsetsani kuti zingwe zikuyenda molunjika ku malo a doko la SO-239, monga pachithunzi pansipa.

Kutsatira muyenera kugulitsa chinthu chowongoka cha mlongoti wa mita 2 Chida chofunikira pa izi ndi chomwe chimatchedwa Dzanja lachitatu, kapena dzanja lothandizira. Ndikuganiza kuti mutha kuwapeza pa Amazon. Ngati mulibe, ndikupemphani kuti mupeze. Ndizothandiza kwenikweni pamene mukuchita zinthu monga soldering.

Mukamaliza kugulitsa, adaputala yanu ya mlongoti wanu wamamita 2 iyenera kufanana ndi izi:

Pambuyo pake, yendetsani coax kumapeto kwina kwa payipi komanso ndi adaputala. Ndimagwiritsa ntchito RG-8U coax pa mlongoti wanga wamamita 2, ndikupangira kuti muchite zomwezo. Pambuyo pake tengani 3/4 ″ THD Dome Cap komanso slide kumapeto kwa adaputala ya SO-239, ndikulumikizanso coax ku mlongoti monga pachithunzi chomwe chili pansipa:

Monga mukuwonera, popeza ndidagwiritsa ntchito adapter ya PVC yamtundu wa screw, ndikosavuta kuyichotsanso kuti igwiritse ntchito mlongoti ngati pakufunika.

Mukaphatikiza mlongoti woyimirira wa mita 2, sinthani ma radial mpaka 45. Pakadali pano nthawi yake yoidula mugulu la wailesi ya 2 metre amateur. Kuti ndichite zimenezi, ndinkagwiritsa ntchito mnzanga amene ndinkagwira naye ntchito kunyamula mlongoti pamalo ake. Kwa ine, ndinkafuna kuyimba mlongoti wapakati pa bandi ya 2 mita. Nthawi zambiri pamakhala mphamvu yotumizira yokwanira kuti mlongoti utseke pafupifupi bandi yonse ya 2 mita.

Kuti muwerenge kukula kwa chinthu chowongoka cha mlongoti, gwiritsani ntchito ndondomekoyi:

Kukula (mu.) = 2808/F.

Kumene F = 146 mHz.

Ngati mukufuna kuti mlongoti wanu wa mita 2 umveke mosiyanasiyana, mukatero gwiritsani ntchito njira yomwe ili pamwambapa. Kwa ine kutalika komwe ndimafuna ndi 19.25 ″ kotero ndimapangitsa gawo loyimirira kukhala lalitali. Izi zimandipangitsa kuti ndiyiyike ndi mlatho wa SWR.

Kwa ma radial, mumalakalaka kuti atalike 5% kuposa chigawo choyimirira, kotero kwa ine, akhale 20.25 in. Chifukwa chake ndidadula anga mpaka 20.5 mkati. radial iliyonse. Izi zimapereka chitetezo cha maso ngati munthu atamenyedwa m'diso. (zochepa kwambiri! choncho chenjerani!!).

Pamene mlongoti wanu wowongoka wa mita 2 uwongoleredwa, umafunika kusindikizidwa ndi silikoni yosindikizira nyengo. Musazengereze kuyiyika. Munthawi imeneyi, zambiri ndizabwino! Onetsetsani kuti ili ndi gawo lolunjika pa cholumikizira cholumikizira komanso pamwamba pa adaputala ya SO-239, pamodzi ndi zomangira zomwe zimayatsa ma radial. Momwemonso onetsetsani kuti pansi pa doko la SO-239 komanso chitoliro cha PVC chokhutitsidwa ndi chosindikizidwanso.

Ndine wokondwa kwambiri ndi zotsatira za mlongoti wanga woyimirira wa 2 mita. Panopa nditha kugunda angapo obwereza amateur a 2 metres pamalowo.