Maitiro ekuita DIY Yakapfupikiswa 20 thru 40 Meter Vertical yePOTA

Pane chimwe chinhu chinonakidza nezve kuita POTA activation kwaunopinda negiya rako rese mupakiti uye zvakare kukonzeresa paki inomhanyisa QRP simba. Tichipihwa yangu yepakutanga positi ine nezve yangu yekutanga QCX-mini QRP transceiver, ini parizvino ndine mamwe maQCX-mini's anondibvumidza kushanda yangu POTA QRP activation pa40, 30, uye 20 metres. Izvi zvaireva kuti ndaifanira kuvaka nhare yakaderedzwa yakatwasuka yemabhendi aya. Iyi chaiyo antenna inovaka yakavakirwa pane yangu yekutanga Yakaderedzwa 40 Meter Vertical asi nekuwedzera kwekugona kupfupisa coil yekurodha papombi yakakodzera yekuvhima pa30 pamwe nemabhendi makumi maviri emamita.

Imwe nyaya yandaive nayo neyekutanga 40-mita yakatwasuka antenna, yaive yekuti ndakashandisa maviri 1/4 wave radials, idzo hungwaru hwechinyakare hunoti unofanirwa kushandisa nemaantenna akatwasuka. Pamamita makumi mana, iwo akapoteredza 40 tsoka kureba. Izvo zvinoita kuti zvinyanye kuoma kuburitsa ma radials kana mune yakanyanya huni POTA activation.

Mukuita mamwe mawebhu tsvakiridzo ndakafumura kuti zvinogoneka kushandisa ma radials ari 1/8 wavelength kureba-- Hongu zvinoita sekupenga kwandiri zvakare, asi kana chiri chokwadi, mushure meizvozvo zvingabatsira zvakanyanya nyaya yekumisikidzwa kweradial. 40 mamita. Kupa kushanda kwakadzikira, asi ndakaona zvakakodzera kupfurwa. Zvakawanda pane izvi gare gare.

Tichifunga kuti ini parizvino ndanga ndiine 20-foot collapsible pole ye40-mita yangu yakapfupikiswa yakatwasuka, ndizvo zvandakashandisa kune iyi multiband antenna. Tichifunga kuti izvi zvainyanya kunge zviri zvemabhendi matatu, ndaida kuti coil yekurodha ideredzwe zvakakwana kuti ndive nechokwadi chekuti ndinogona kukurumidza kugadzira bhendi ndisingatapudze yakatwasuka. Zvekare, ndakaenda kune iyo coil yakapfupikiswa yakatwasuka antenna Calculator peji rewebhu iro rakandipa zvinhu zvangu zvekutanga zvekuzadza coil. Kugadzirisa iyi antenna kune ese matatu mabhendi kwakaonekwa kwakaoma kupfuura zvakajairika. Kufungidzira kwangu ndekwekuti ndiri kushandisa maviri chete 3/3 wave radials.

Dhiagiramu iri pazasi ndiyo mipimo yangu yekupedzisira. Yako gasi mileage inogona kusiyana, zvisinei, izvi ndizvo zvandakaguma nazvo.

Zvemhando yekuzadza coil, ndakatsunga kushandisa In Sink Tailpiece. Kufunga kwangu ndekweizvi, kazhinji vanhu vanoshandisa pombi yakajairwa yePVC yemhando yecoil, iri hombe, asi kusimba kwemadziro epombi kunoratidzika zvisina basa kukora pakushandisa kwangu. Nyaya yangu hombe apa yaive yekuisa kuderera kushushikana uye kusagadzikana pawaya iyo yakamira chikamu cheiyo antenna. Iyo commode inofashukira chubhu yakanyanya kutetepa uye yakareruka uye inoshanda zvakangonaka. Iyo dhayamita yekunze yechubhu yangu yekufashukira ndeye 1.5 inches. Ndiri kufunga kuti saizi yekunze yakajairika. Ndakacheka Sink Tailpiece 3 1/2 inches kureba, asi 2 1/2 ″ ingadai yakashanda zvakanaka.

Ndakashandisa coil yakaderedzwa yakatwasuka antenna karukureta zvichibva pane iyo coil inowanikwa mune iri pamusoro dhizaini uye zvakare ndakagadzira huwandu hwese hwekutendeuka hwe33 nepombi pamatende gumi nematatu kubva pamusoro peiyo coil. Kana iwe uine imwe tambo yegeji, isa iyo mucoil yakapfupikiswa yakatwasuka antenna calculator pane kudaro.

Pakutanga ndakagadzira iyo yekurodha coil ine akaverengerwa akasiyana ekuchinja. Sezvo zvakapera, ndaida kuwedzera inductance. Mumufananidzo uri papeji rinotevera iwe unogona kuona pamusoro pekupedzisira kutendeuka ndakabatanidza yakawanda yakawanda tambo. Chidzidzo chakadzidzwa mhepo yakawedzera tambo pacoil kupfuura yakatemwa.

Pazasi pane mufananidzo weiyo yekuzadza coil yakagadzirwa kubva kune yakawandisa chubhu:

Kugadzira coil yekuzadza, ndakabaya maburi matatu e6-32 Stainless screws 3/4 yeinji kureba. Ndakashandisa crimp connectors kubatanidza iyo enamel tambo nema screws. Paunenge uchishandisa enamel tambo, ona kuti iwe unobvisa iyo insulation kubva waya. Mushure meizvozvo shandisa ring-type kink adapters kuti ubatanidze kune screw. Mune rudzi urwu rwekushandisa, ini ndinoda solder kink adapters kune tambo. Izvi zvinovimbisa chinongedzo chikuru uye zvakare yakanyanya kudzivirirwa kubva mukuora kana ichishandiswa kunze. Mukuwedzera, ini ndinoshandisa nzungu mbiri pane imwe neimwe screw iyo inovadzivirira kubva pakusunungura panguva yekushandiswa. Kuziviswa kwemavara machena akatwasuka pamakoiri. Ndakashandisa hot-melt glue kuchengetedza makoiri kubva kufamba-famba mushure mekugadzirisa. Izvo hazvina kunyatso, asi zvinoshanda.

Kuti ndichinje mabhendi, ndinongotamisa clip yealligator. Sezvakaratidzwa, hapana imwe yemakoiri inopfupikiswa kunze. Iyi ndeye 40-metres bhendi. Kune bhendi remamita makumi matatu, ingo fambisa clip ye alligator pasi kune sikuruu iri pakati pemakoiri ese. Kwemamita makumi maviri, fambisa siruu ye alligator-pasi, inodimburira coil yese.

Sezvandambotaura, ini ndinoshandisa 20-tsoka inodonha tsvimbo yerubatsiro yerubatsiro rweantenna yakapfupikiswa yakatwasuka. Ndaishuvira kuti zvizvitsigire, saka zvinoda imwe mhando yehurongwa hwemajaya. Ndakasangana neK6ARK's youtube channel. Kunyanya vhidhiyo yake yakanyorwa SOTA/Wire Portable Telescopic Post Setup. ndiyo sevhisi yakanaka. Ndakagadzirisa zvishoma zvishoma, asi pfungwa imwe chete. Mufananidzo wakanyorwa pazasi unoronga mhedzisiro.

Kuti uwane tsananguro huru tarisa vhidhiyo yeK6ARK:

Iyo epoxy adhesive yaangangodaro akashandisa yaive yakanaka yekare JB Weld. Ndizvo zvandaishandisa, uye zvinoshanda zvakanakisa. Imwezve pfungwa yandakaita zvakasiyana handina kushandisa iyo "Mufananidzo 9's". Pamwe ndinotengawo mari. Zvakananga ini ndinoda kushandisa iyo yakanaka yekare taut-line hitch kune yangu yega mitsara. Zviri chaizvo nyore chaizvo knot kudzidza. Heino webhu link kune youtube vhidhiyo klipu yekuti ungasunga sei Taut-line Hitch. Kufunga kwangu ndekweizvi, tichifunga kuti ini ndinongoziva nzira yekusunga taut-mutsara drawback, ndinogona kushandisa chero rudzi rwetambo kumutsara wega. Saka kana ndikarasikirwa nemumwe wemitsara yangu, ndinogona kungotora chimwe chinhu cheparacord uyezve ndinogara mubhizinesi.

Heino kuvharika kweiyo taut-line hitch:

Chinhu chimwe chandinoita ndechekuti kana ndangosunga taut-line drawback kekutanga, handizvizivi. Ini ndinongobvisa-makarabiner kubva padanda uye zvakare ndinopedzisa mitsara yemurume ine taut-line hitch intact. Nenzira iyi nguva inotevera pandinoshandisa yakapfupikiswa 40 metres yakatwasuka, mitsetse yevarume yakagadzirira kuenda. Izvi ndizvo zvinogadzirwa neK6ARK neFigure-9s yaanoshandisa.

Pakumisikidza 40 30 20 metres yangu yakapfupikiswa yakatwasuka, ndanyatsoona kuti ndiyo yakanyanya kunaka yekumhanyisa tsvimbo yekubata hove kuburikidza nenzvimbo yecoil. Izvi zvinoderedza kuchinjika uye kushushikana padanda rehove. Chimwe chinhu chandakanyatsoita ndechekuti ndakaisa magumo ekuzadza coil se "pamusoro". Iyi ndiyo mhedzisiro yekuisa kwangu kurongedza coil kumusoro-pasi kakawanda kana ndichiimisa. 

Pakupera kwetsvimbo yekubata hove, ndine bhokisi repurasitiki rine ITA IZVI 1: 1 balun sezvakagamuchirwa mumufananidzo wakanyorwa pasi apa. Iwo waya dzeyero ndeangu 2 radials anocheka pamativi epakeji. Iyi setup inoita kuti ikurumidze uye nyore kwazvo kuburitsa ma radials. Ini zvakare ndine velcro mabhendi anouya kubva kune screws padivi pebhokisi repurasitiki. Izvi zvinoputira hwaro hwetsvimbo yekuredza. 

Sezvambotaurwa, mukati mebhokisi repurasitiki mune 1: 1 balun. Heino mukati mebhokisi repurasitiki: 

Iyo balun inoshandisa RG-174 coax uye ine 9 inotendeuka paKind 43 ferrite core ine OD ye0.825 inches. 

Sezvakakurukurwa kare, zvainetsa kubata 40 metres 1/4 wavelength radials mukuseta sango. Ndichiita kutarisa mambure, ndakafumura kuti 1/8 wavelength radials yeantenna yakatwasuka inogoneka. Pano pane akati wandei mareferensi andakawana nevanhu vakangwara kundipfuura pachinhu ichi: 

Radial System Dhizaini uye Kubudirira muHF Radials - N6LF

Vertical antenna masisitimu, kurasikirwa, uye kugona - N1FD

Saka ndakatenda kuti ndaizopa 1/8 wavelength radials kupfura. Panzvimbo pekuve ne 33-foot radials, ini zvechokwadi ndingave ne 16.5-tsoka radials. Pamusoro pezvo, ndanga ndichingotumira zvingangoshandisa ma radials maviri. Ndinoziva kuti izvi zvishoma pane zvakakwana. Asi ndakaona zvakaoma kuona kana izvi zvaizonyatsoshanda.

Imwe dambudziko hombe ine tambo antenna kana inotakurika, inzvimbo yekuchengetera uye nzira yekukurumidza / nyore kuendesa. Mushure mekuyedza nzira dzinoverengeka dzakasiyana uye mashoma ekutsvaga pawebhu, ndakawana saiti yeW3ATB kwaanotsanangura kushandisa choko yehuni. Asi kwete chero cheki reel, asi Irwin Devices Speedlite choko reel ine 3: 1 giya chikamu. Ini handisi kuzotsanangura pazasi, sezvaanoita basa rakasiyana-siyana kujekesa kubvarura uye kuchinjwa kweiyi gizmo kuti ishandiswe sekuchengetedza waya uye kukurumidza kutumira ma antenna.

Heino mufananidzo weIrwin Speedlite 3: 1 chaki reel. Iyo inobata 16.5 tsoka dzewaya kune imwe yeradials yangu zvakanaka.

Yenzvimbo yekuchengetedza yechinhu chakatwasuka cheyangu 40/30/20 mita yakatwasuka. Ndakashandisa chidimbu chehuni chakareba 7 inches uye zvakare ndakacheka notch kumagumo ega ega. Ndinobva ndavhara tambo kureba. Mufananidzo wakanyorwa pazasi zvirongwa zvandaifunga nezvazvo. Ndakanga ndichityira kuti coil yekurongedza yaigona kuroverwa uye inogona kukuvara ichiiisa mupakeji.

Uyezve, ona tambo yeyero. Tichifunga kuti chiredzo chinoputsika chandakashandisa chakareba mamita makumi maviri, uyewo 20/1 wavelength pamamita makumi maviri i 4 tsoka, tambo yeyero, iyo yakareba mamita 20 16.5/3, inonamirwa pamusoro pekuredza. tsvimbo uye tambo tsvuku yakabatanidzwa nayo. Izvi zvinoisa balun yangu pasi kana tsvimbo yekuredza yawedzerwa zvachose.

Saka ndakatumira zvingangove kune nharaunda yeWalmart ndichitsvaga chinhu chaive neraundi yepurasitiki chigaba chaizoenderana--uyewo ndakachiwana-- chakatenderedza silinda yezvipukupu zvevacheche! Kumba, ndaive netwunhu twakarongedza kubva kune mamwe maelectronics andainge ndawana ari mamwe emhando yekuvhara cell foam. Ndakashandisa izvo kurongedza mukati me silinda Pazasi pane mufananidzo weiyo yakatwasuka chikamu chiri kurongedzerwa mumudziyo wayo wekuchengetera.

Heino mumwe mufananidzo weantenna mugaba rakagadzirirwa kuisa chivharo.

Kugadzirisa antenna kunogona kuve kwakaoma zvishoma asi zvinogona kuitwa. Kuve neNanoVNA antenna analyzer kunobatsira zvakanyanya. Chinhu chekutanga chekuita ndechekuona kwazviri ese ma radials akaderedzwa kusvika 16 1/2 tsoka kureba. Zvinotevera zvinotanga nemamita makumi maviri nekupfupisa zvachose coil yekuzadza. Kazhinji quarter-wave yakatwasuka yemamita makumi maviri inotenderera 20 20/16 tsoka. Ndakatanga ndiine 1 tsoka ndichiona kuti iyi yaive yakareba. Zviri nyore kupfupisa antenna iyo yakareba zvakare pane kuwedzera urefu. Tichifunga kuti chiredzo chinoshandiswa kuchengetedza antenna chakareba mamita makumi maviri, ndakawedzera 2 17/20 tsoka dzemutsara wechoko yasara kumusoro kwewaya yakatwasuka. Nenzira iyi kana kureba kwemamita makumi maviri pakukura kwayo kwekupedzisira, ndinokwanisa kugadzirisa saizi yese yeantenna kuti ive nechokwadi chekuti balun yakagara pasi.

Tevere antenna kusvika 30 metres. Tanga nekuisa shorting clip kuscrew iri pakati pemakoiri maviri. Tarisa uone kutenheka. kana yakadzikira zvakanyanya, bvisa pona pamwe nekutarisazve. Kana yakadzikira zvishoma, ingosiyana 1 kana 2 matendeuko echikamu chisina kupfupikiswa checoil. Kuita izvi kunoderedza inductance yecoil zvishoma pane kubvisa kutendeuka.

Kana wagutsikana nemamita makumi matatu, dzoka uye ongororawo 30 metres. Kana chinhu chidiki chese chaive chikuru pamamita makumi matatu ndakatora chinonamira chinopisa-chinonyunguduka uye ndikachiisa perpendicular kune mirairo yemakoiri kuti arambe ari panzvimbo.

Chekupedzisira kwemamita makumi mana, endesa kapfupi clip kune yepamusoro screw, iyo inoshandisa iyo yese yekurongedza coil. Dzokorora maitiro ekugadzirisa sepakutanga. Kana wapedza, shandisa hot-melt adhesive kune makumi mana emamita anotsamira pakuvadzivirira pachinzvimbo.

Kekutanga nguva yandakashandisa antenna iyi ndipo pandakatanga iyo Clearfork Canyon Nature Preserve, K-9398 ndichishandisa yangu QCX-mini transceivers. Pazasi pane mufananidzo weiyo yakatwasuka antenna yakamiswa pamugero panguva ye activation.

Mhando yayo yakaoma kuona antenna. Ini ndinoshandisa yero paracord kune mitsara yemurume iyo inobatsira kuona pane antenna.

Zvakaguma nei? Ndiri kufadzwa neantenna iyi. Pasinei nemvumo yayo, inoshanda nemazvo-- kunyangwe ichimhanya QRP. Mukuita kwangu kwekutanga nayo, ndakaita gumi nemashanu QSOs pa15 uye 40 metres. Ini ndinowanzo kuwana 20 mishumo ndichimhanya 569 watts.