Yadda ake DIY Gajartacce Mita 20 zuwa 40 a tsaye don POTA

Akwai wani abu mai ban sha'awa game da kunna POTA inda kuka shiga tare da duk kayan aikin ku a cikin fakiti kuma ku jawo wurin shakatawa da ke da ikon QRP. Da aka ba ni na asali post game da farkon QCX-mini QRP transceiver, a halin yanzu ina da ƙarin QCX-mini's waɗanda ke ba ni damar yin aikin kunna POTA QRP na akan mita 40, 30, da 20. Wannan yana nufin ina buƙatar gina wayar hannu da aka rage a tsaye don waɗannan makada. Wannan ƙayyadaddun ginin eriya na tsaye ya dogara ne akan farkon Rage Mita 40 Tsaye duk da haka tare da ƙari na samun ikon gajeriyar juzu'i a madaidaicin fam ɗin famfo don girgiza akan 30 da maɗaurin mita 20.

Batu ɗaya da nake da eriyar madaidaiciyar mita 40 ta farko, ita ce na yi amfani da radials 1/4 guda biyu, waɗanda hikimar gargajiya ta ce dole ne ku yi amfani da eriya madaidaiciya. A tsayin mita 40, tsayin su kusan ƙafa 33 ne. Wannan yana sa ya fi wahala a saki radials lokacin da ake kunna POTA mai itace mai nauyi.

A cikin yin wasu binciken yanar gizo na gano cewa yana yiwuwa a yi amfani da radial wanda ke da tsayin tsayin 1/8 - Ee ya bayyana min hauka kuma, amma idan gaskiya ne, bayan haka zai taimaka sosai wajen aiwatar da radial akan batun. mita 40. Bayar da ingantaccen aiki, amma na ga ya cancanci harbi. Da yawa akan wannan daga baya.

Ganin cewa a halin yanzu ina da sandar kamun kifi mai ƙafa 20 mai iya rugujewa don gajeriyar mita 40 ta madaidaiciya, shine abin da na yi amfani da shi don wannan eriya mai yawa. Ganin cewa wannan ya fi yiwuwa ya kasance na makada 3, Ina so a rage yawan coil ɗin don tabbatar da cewa zan iya yin gyaran band cikin sauri ba tare da rage tsaye ba. Har ila yau, na wuce zuwa gajartaccen eriya mai lissafin eriya a shafin yanar gizon wanda ya ba ni abubuwan farko na cika coil. Kunna wannan eriya don duk makada 3 ya bayyana mafi wayo fiye da na al'ada. Hasashen na shine cewa ina amfani da radiyon kalaman 1/8 kawai.

Hoton da ke ƙasa shine girmana na ƙarshe. Nisan iskar gas ɗin ku na iya bambanta, duk da haka, wannan shine abin da na ƙare.

Don nau'in coil ɗin mai cikawa, na yanke shawarar yin amfani da wani In Sink Tailpiece. Tunanina shine wannan, yawanci mutane suna amfani da bututun PVC na gama gari don nau'in coil, wanda yake da kyau, duk da haka girman bangon bututun ya bayyana yana da kauri don aikace-aikacena. Babban batuna anan shine sanya ƙarancin damuwa da damuwa akan waya wanda shine ɓangaren eriya a tsaye. Bututu mai ambaliya ya fi sirara da sauƙi kuma yana aiki sosai. Diamita na waje na bututu mai ambaliya ya kai inci 1.5. Ina tunanin wannan shine daidaitaccen girman waje. Na yanke Sink Tailpiece 3 1/2 inci tsayi, amma 2 1/2 ″ zai yi aiki sosai.

Na yi amfani da na'urar rage madaidaicin lissafin eriya dangane da inda za'a sami coil ɗin a cikin shimfidar sama kuma na haifar da jimlar juzu'i na 33 tare da famfo a juyawa 13 daga saman nada. Idan kana da igiyar gage daban-daban, saka waccan a cikin madaidaicin madaidaicin kalkuleta na eriya.

Asali na gina coil ɗin lodi tare da ƙididdiga iri-iri na juyi. Yayin da ya ƙare, Ina buƙatar ƙarin inductance. A cikin hoton da ke shafi na gaba za ku iya gani a saman juyi na ƙarshe na haɗa da kebul da yawa. Darasi da aka koya na karin igiyar iska akan coil fiye da ƙaddara.

A ƙasa akwai hoton coil ɗin da aka yi daga bututun da ya cika:

Don yin coil ɗin cikawa, na huda buɗaɗɗen buɗaɗɗiya guda uku don 6-32 bakin sukurori 3/4 na tsayin inci. Na yi amfani da crimp connectors don haɗa kebul na enamel tare da sukurori. Lokacin amfani da kebul na enamel, duba dashi zaka cire abin rufe fuska daga wayar. Bayan haka yi amfani da adaftan kink nau'in zobe don haɗawa da dunƙule. A cikin irin wannan aikace-aikacen, Ina son siyar da adaftar kink zuwa igiya. Wannan yana ba da garantin babban hanyar haɗin gwiwa kuma yana da ƙarin rigakafi ga lalata yayin amfani da shi a waje. Bugu da kari, Ina amfani da kwayoyi guda biyu akan kowane dunƙule wanda ke hana su sassauta yayin amfani. Sanarwa na fararen ƙullun tsaye akan coils. Na yi amfani da manne mai narke mai zafi don hana coils ɗin yawo bayan kunnawa. Ba daidai ba ne, duk da haka yana aiki.

Don canza makada, Ina matsar da shirin alligator. Kamar yadda aka bayyana, babu ɗayan coils ɗin da aka gajarta. Wannan na band na mita 40 ne. Don rukunin mita 30, kawai matsar da shirin alligator zuwa dunƙule a tsakanin coils biyu. Tsawon mita 20, matsar da alligator clip-down dunƙule, wanda guntun fitar da dukan nada.

Kamar yadda na fada a baya, Ina amfani da sandar kamun kifi mai ƙafa 20 mai rugujewa don taimakon mast ɗin eriya madaidaiciya. Ina son shi ya zama mai dogaro da kai, don haka yana buƙatar wani nau'i na shirin guying. Na ci karo da tashar youtube ta K6ARK. Musamman bidiyon sa mai suna SOTA/Wire Portable Telescopic Post Setup. shi ne manufa sabis. Na yi wasu ƙananan gyare-gyare, amma ra'ayin iri ɗaya ne. Hoton da aka jera a ƙasa yana shirye-shiryen ƙarshe.

Don kyakkyawan bayanin kalli shirin bidiyo na K6ARK:

Manne epoxy mai yiwuwa yayi amfani da shi tsohuwar JB Weld ce. Abin da na yi amfani da shi ke nan, kuma yana aiki da kyau. Wani batu da na yi daban-daban shine ban yi amfani da "Hoto na 9" ba. Yiwuwa ni ma ina da tattalin arziki don siyan su. Kai tsaye ina son yin amfani da kyakkyawar tsohuwar layin taut-line don kowane layi na. Haƙiƙa kulli ne mai sauƙin koya. Anan akwai hanyar haɗin yanar gizon zuwa shirin bidiyo na youtube kan yadda ake ɗaure Hitch-line Hitch. Tunanina shine wannan, la'akari da cewa na gane yadda ake ɗaure taut-line drawback, zan iya amfani da kowace irin igiya don layi ɗaya. Don haka idan na rasa ɗaya daga cikin layin guy na, Zan iya ɗaukar ƙarin kayan paracord kawai kuma in ci gaba da kasuwanci.

Anan akwai kusancin layin taut-line:

Abu daya da na yi shi ne da zarar na daure taut-line drawback a karon farko, ban warware shi ba. Ina kawai cire karabe daga sandar sandar kuma na ƙare layin mutumin tare da layin taut-line. Ta wannan hanyar lokacin na gaba na yi amfani da gajeriyar mita 40 a tsaye, layin guy ɗin suna shirye don tafiya. Wannan shine abin da K6ARK yayi tare da Figure-9s wanda yake amfani dashi.

A lokacin da kafa ta 40 30 20 mita taqaitaccen a tsaye, Na zahiri gano cewa shi mafi kyau gudu da kamun kifi sanda ta wurin da makaman na nada. Wannan yana rage jujjuyawa da damuwa akan sandar kamun kifi. Wani abu kuma da na yi shi ne na rarraba ƙarshen ƙarshen coil ɗin a matsayin "saman". Wannan sakamako ne na sanya marufi na juye-juye sau da yawa lokacin kafa shi. 

A ƙarshen sandar kamun kifi, Ina da akwatin filastik tare da YI DA KANKA 1: 1 balun kamar yadda aka karɓa a cikin hoton da aka jera a ƙasa. Wayoyin rawaya sune radial dina guda 2 waɗanda ke zayyana a gefen fakitin. Wannan saitin yana sa shi sauri da sauƙi don saki radials. Har ila yau, ina da makaɗaɗɗen velcro suna fitowa daga sukurori a gefen akwatin filastik. Wannan yana zagaye gindin sandar kamun kifi. 

Kamar yadda aka fada a baya, a cikin akwatin filastik shine 1: 1 balun. Ga cikin akwatin filastik: 

Balun yana amfani da RG-174 coax kuma yana da kunna 9 akan nau'in nau'in nau'in ferrite 43 wanda ke da OD na inci 0.825. 

Kamar yadda aka tattauna a baya, yana da ɗan wahala don ɗaukar radials tsawon mita 40 1/4 a cikin saitin gandun daji. Yin wasu kallon yanar gizo, na gano cewa 1/8 radials na tsayin radiyo don eriya madaidaiciya mai yiwuwa ne. Anan akwai nassoshi da dama da na samu daga mutanen da suka fi ni wayo kan wannan batu: 

Tsarin Tsarin Radial da Ƙarfi a cikin HF Radials - N6LF

Tsarin eriya na tsaye, asara, da inganci - N1FD

Don haka na yi imani zan ba 1/8 radials tsayin igiyoyin harbi. Maimakon samun radials ƙafa 33, tabbas zan sami radials ƙafa 16.5. Har ila yau, Ina so in yi amfani da radials guda biyu. Na gane wannan ya yi ƙasa da mafi kyau. Amma na yi la'akari da cewa yana da wuya a ga ko wannan zai yi aiki da gaske.

Wata babbar matsala tare da eriyar kebul lokacin da ake ɗauka, ita ce sararin ajiya da yadda ake saurin tura ta. Bayan da na gwada wasu hanyoyi daban-daban da ƴan binciken yanar gizo, na sami rukunin yanar gizon W3ATB inda ya bayyana ta amfani da ma'aunin alli. Amma duk da haka ba wai kawai kowane reel ɗin alli ba, amma na'urar Irwin na'urorin Speedlite alli mai ma'aunin 3:1. Ba zan yi bayani a ƙasa ba, yayin da yake yin aiki na musamman yana bayyana ɓarna da canjin wannan gizmo don amfani azaman ajiyar waya da saurin tura eriya.

A nan ga hoton Irwin Speedlite 3:1 na alli. Yana riƙe da ƙafa 16.5 na waya don ɗaya daga cikin radials na da kyau.

Don sararin ajiya na madaidaicin kashi na mitoci 40/30/20 na tsaye. Na yi amfani da guntun itace mai tsayi inci 7 kuma na yanke daraja a kowane ƙarshen. Sai na rufe kebul na tsawon tsayi. Hoton da aka jera a ƙasa yana shirye-shiryen abin da nake tunani. Na damu da cewa kwal ɗin za ta yi karo da ita kuma za ta iya lalacewa yayin ɗaure ta cikin fakiti.

Bugu da ƙari, duba kebul na rawaya. Ganin cewa sandar kamun kifi mai iya rugujewa da na yi amfani da ita tana da tsayin ƙafa 20, haka kuma 1/4 tsawon tsayin mita 20 yana da ƙafa 16.5, igiyar rawaya, wadda tsayin taku 3 1/2, tana manne da saman kamun. sanda kuma jajayen igiyar tana haɗi da ita. Wannan yana sanya baluna a ƙasa lokacin da aka faɗaɗa sandar kamun kifi gaba ɗaya.

Don haka na buga wata ila zuwa unguwar Walmart ina neman wani abu mai zagaye da kwandon filastik wanda wannan zai dace - kamar yadda na gano shi - a kusa da silinda na goge jarirai! A gida, ina da wasu kayan tattarawa daga wasu na'urorin lantarki da na samu a zahiri wani nau'in kumfa ce mai rufewa. Na yi amfani da wannan don yin layi a cikin silinda A ƙasa akwai hoton ɓangaren tsaye da ake cuɗe shi cikin kwandon ajiyarsa.

Anan ga wani hoton eriya a cikin kwandon da aka shirya don sanya murfin.

Gyara eriya na iya zama ɗan wahala duk da haka ana iya yi. Samun mai nazarin eriya NanoVNA yana taimakawa da yawa. Abu na farko da za a yi shine ganin shi duka radials an rage su zuwa tsayin ƙafa 16 1/2. Mai zuwa yana farawa da mita 20 ta hanyar rage cikawar coil ɗin gaba ɗaya. A al'ada raƙuman kwata na tsaye don mita 20 yana kusa da ƙafa 16 1/2. Na fara da ƙafa 17 na gane cewa wannan ya yi tsayi da yawa. Yana da sauƙi don gajarta eriya mai tsayi fiye da ƙara tsayi. Ganin cewa sandar kamun kifi da ake amfani da ita don raya eriya tana da tsayin ƙafa 20, na ƙara ƙafa 3 1/2 na layin alli da ya bari a saman wayar a tsaye. Ta wannan hanyar lokacin da tsayin mita 20 ya kasance a girmansa na ƙarshe, zan iya daidaita girman girman eriyar don tabbatar da cewa balun yana kan ƙasa.

Na gaba kunna eriya zuwa mita 30. Fara da sanya guntun shirin zuwa dunƙule wanda ke tsakanin coils biyu. Duba don girgiza. idan yana da ƙasa da yawa, cire juyi kuma a sake dubawa. Idan yana da ƙasa kaɗan, kawai bambanta 1 ko 2 juzu'i na ɓangaren da ba a gajarta ba na coil. Yin haka yana rage girman inductance na nada da ƙasa da kawar da juyi.

Idan kun gamsu da mita 30, komawa kuma ku bincika mita 20. Lokacin da kowane ɗan ƙaramin abu ya yi kyau a kan mita 30 na ɗauki ɗan ɗanɗano mai narkewa mai zafi kuma na shafa shi daidai da umarnin coils don kiyaye su a wurin.

Ƙarshe na tsawon mita 40, matsar da guntun shirin zuwa saman dunƙule, wanda ke yin amfani da duk abin da aka tattara. Maimaita tsarin daidaitawa kamar a baya. Lokacin da aka gama, yi amfani da manne-narke mai zafi zuwa mita 40 da aka dogara da su don kare su a matsayi.

A karo na farko da na yi amfani da wannan eriya shi ne lokacin da na jawo Clearfork Canyon Nature Preserve, K-9398 amfani da QCX-mini transceivers na. A ƙasa akwai hoton eriyar tsaye da aka kafa a kwazazzabo yayin kunnawa.

Nau'in sa yana da wahalar ganin eriya. Ina amfani da rawaya paracord ga layin mutum wanda ke taimakawa wajen ganin inda eriya take.

Sakamakon? Na gamsu da wannan eriya. Duk da rangwamen sa, yana aiki da kyau-- har ma yana gudana QRP. A farkon kunnawa da shi, na yi 15 QSOs akan mita 40 da 20. Yawancin lokaci ina samun rahotanni 569 yayin gudanar da 5 watts.