VHF antenna ngezandla zakho: umklamo self-ezenziwe

VHF antenna - idivayisi okuyinto senzelwe ethola ngemisebe. Lezi ukulungiswa kungasebenza kuphela amasignali iDemo. Amamodeli omunye nomunye kuhluke imvamisa. Antenna ngoba umsakazo we-FM ngezandla zakho siqu uya phezu imiyalelo. Kulokhu, kubalulekile ukucabangela uhlobo umamukeli. Ngaphezu kwalokho, kufanele kuphawulwe ukuthi kukhona izinhlobo ezahlukene antenna, okuyinto zingafani isakhiwo kanye nemingcele.

Imodeli for umamukeli elula

Kukhona-antenna ngoba FM umamukeli ngezandla zakho kaningi kwi ukuma mpo. Ngesikhathi esifanayo ke ilinganisa kangcono ukusebenzisa obuphelele encane. Ukuze ulungise izigxobo esetshenziswa Welding inverter. Ngokuyinhloko kuvuna insika, okuyinto kuyogcina ukusekelwa. Ubukhulu bayo kumele okungenani ibe 1.2 cm. Ukuze yokukhulisa isignali reception usebenzisa reflectors. ukulungiswa Abaningi Rack setha engela kancane.

Kumila antenna kumele kwenziwe nge ukunqwabelanisa. Ngesikhathi esifanayo ezilinganisweni bavumelekile ukurekhoda eteyipini. Ochwepheshe bathi steel tube ukuthi bakwamukele kahle. Ukuze onobuhle nge isiqondiso negative sisetshenziswa kugqame. elementi wathi ogibele emaphethelweni insika.

Idivayisi ene yokubeka

Antenna ngoba umsakazo we-FM ngezandla zenu kwenziwa amaza ezahlukene. Leyo mikhumbi phakathi ezahlukene conductivity ukubaluleka nokuzuza. Lapho ukuhlangana iyunithi kubalulekile ukulungiselela insika okuqinile. Ochwepheshe ukweluleka ukusebenzisa yokubeka eziyize ezinesisindo ezincane. Ububanzi kufanele kube okungenani 2.2 cm. Uma sicabangela isibonelo sokuba ongaphakeme-imvamisa abamukelayo, le counterweights kungenziwa akhethwe insimbi engagqwali. Akubalulekile ukufaka ulwelwesi.

Kugqame antenna asetshenziswayo amaza ezahlukene. Ezimakethe zokuguqulwa njalo amacembe. Banezinhliziyo inzuzo okusezingeni eliphezulu. Nokho, kufanele kuphawulwe ukuthi zinzima ukukhiqiza bebodwa. Usuthule phambi ezivuthayo phezu usebenzisa inverter Welding. Emaphethelweni antenna kufanele sanded ngokucophelela. Racks ingasetshenziswa ne ububanzi 0.3 cm. Ukuze ekulweni resonance ishayela ukuphazamiseka isebenzisa reflectors obukhethekile conductivity eliphezulu. Amamodeli kanye izitobhi ovundlile zenziwa nge insika eyodwa kuphela.

Imodeli Racks ezimbili

Nge Racks ezimbili VHF antenna ngezandla zakho ziqhubeka aqinise ensikeni yaso ububanzi. Amamodeli yalolu hlobo Site uchungechunge abamukelayo ahlukahlukene. Ngokuvamile, ubazisa lwamaphethini ukumelana, bayakwazi sokuqhuba amaza ngenhla 300 MHz. Amadivayisi amaningi zisebenzisa reflectors amaningi. Phakathi inhlangano yabantwana bakwa-imodeli sidingide aqinise ensikeni yaso emaphakathi. Njengomthetho, Ochwepheshe usebenzise ubukhulu tube encane nge imikhawulo ngensimbi. Kufanele kuphawulwe ukuthi zikhona onobuhle ngamathiphu. Kulokhu counterweights kungenziwa agibele amahhashi at engele ezahlukene. Ubude stud in a antenna elula uyalingana 22 cm.

Ukuze andise inzuzo, amashubhu steel asetshenziswa. Kukhona ukuguqulwa ichopho. Basebenta at a imvamisa 200 MHz. Direction ethile antenna zingahluka. Ingxenye engezansi idivayisi iku yokubeka angawodwa. I kugqame kufanele zixhunywe kahle. I counterweight kungenzeka shelwe evundlile.

Kufanele kuphawulwe ukuthi ukuze unqobe lo msindo isigaba kufanele usebenzise reflectors side. Mast ukumelana imithwalo eliphezulu. Antenna yalolu hlobo zinhle kakhulu polarizations ezimbi. Nokho, kulesi simo-ke kuyadingeka ukuba acabangele uhlobo umamukeli bese umkhawulo imvamisa.

antenna ovundlile

antenna ovundlile kungenziwa ayeba counterweights tabobunjwa. ukulungiswa Simple zenziwa emigceni insika. Kukhona okuningi kumadivayisi ephezulu imvamisa, okuyinto ekhiqizwa nge kugqame yomugqa, okuyinto igibele ezansi the yokubeka. antenna ovundlile abe okusezingeni eliphezulu impedance isilinganiso. Bayakwazi sokuqhuba imvamisa 200 MHz.

onobuhle Abaningi anemisila counterweights double. Kulokhu aqinise ensikeni yaso isetshenziswa 1.2 cm ububanzi. Abanye Site ukusetshenziswa ne ekhaya abamukelayo. Banezinhliziyo Coefficient eliphezulu emi wave. Racks ivame engela kwesokudla. Counterweights kukhona nje phambi idivayisi.

ukuguqulwa mpo

antenna Kuqondile labo abazokwazi ukusebenza amaza ezahlukene. Ukulungiswa yalolu hlobo babe okusezingeni eliphezulu okhulisa isici. Kuyinto mpo VHF antenna ulula ukuze umsakazo we ngezandla zakhe. Okokuqala sidinga ukhethe ibha ezinhle, ukulungiselela kusengaphambili Welding inverter. Ukuze axazulule izinkinga nge nokwehlukana negative Kunconywa ukuba asebenzise ishayela reflectors. Ngesikhathi esifanayo ezilinganisweni udinge ukufaka obuphelele esikhulu futhi ububanzi akufanele kube ngaphansi kuka-0.3 cm. Ukuthuthukisa kohlelo izihlungi zisetshenziswa. Ngaphambili ideski kungase kuphela ukufakwa i-engela 45 degrees. Nokho, kubalulekile ukuba pre-ukubala amandla insika.

Ukuze kwandiswe ukuzinza isakhiwo isizinda zingenziwa ne abutments. Kuyinto antenna FM umsakazo ngezandla zabo kuphela namaqhosha dlala ukuthi kufanele sifakwe endaweni ephakeme ongaphakeme. Counterweights bavunyelwe bekhohlisa ibha. Kufanele banakekele Linings. ukunakekelwa okukhethekile kunikezwa survey ohlangothini, okuyinto awashintsheki aqinise ensikeni yaso. Ukuze wandise indawo ukuhlakazwa yokubeka Kunconywa 25 cm ubude.

I-apharathasi 144 MHz

VHF antenna at 144 MHz ngezandla zabo iyibha ngqo noma lwalugobile. Mast kulokhu sisetshenziswa nge abutments etshekile. Kwezinye izimo, wasebenzisa reflectors pulsed. Kuyinto UHF antenna 144 ngezandla zakhe kuya uprights ohlangothini. Ubude kahle le kusekela uyalingana 15 cm. I abanikazi phambi zisetshenziselwa ukwandisa inzuzo. Njengomthetho, basuke agibele amahhashi kanye ukuwuthukulula. VHF antenna at 144 MHz ngezandla zakho kwenziwa izitobhi elilodwa noma amabili.

Ukuguqulwa 145 MHz

VHF antenna 145 MHz ngezandla wenza insika iDemo. Nokulungiswa ezivamile abhekwa izinsika ezintathu. kuzuze onobuhle impela high. Abantu ababegijima kusukela antenna ukusetshenziswa ne ishayela reflectors. Ngaphambili ingakuthinta isethwe kuphela esebenzisa inverter Welding. Ngo amamodeli we directivity okusezingeni eliphezulu. Ochwepheshe bathi antenna uvunyelwe ukuze benze insika lwalugobile.

Model ngethusi insika

Kukhona-antenna ngoba iviyo UHF ngezandla zabo siqu reflectors imisindo ehlukene. Wezinsika angase afakwe noma ngaphandle ukuwuthukulula. Ezinye ukushintshwa Senziwe Racks ohlangothini. Antenna ekhiqizwa nge kusakazeka okusezingeni eliphezulu Coefficient. Okokuqala ukukhwezwa insika. Counterweights kungenziwa agibele amahhashi engela kancane.

I elikhulu ububanzi struts kuyinto 1.2 cm. Kulokhu aqinise ensikeni yaso kuhle ukusebenzisa isisekelo esiqinile. Uma sikhuluma kugqame, kubalulekile ukusebenzisa i-pulse noma uhlobo wire. Ukwenza isibonelo esilula esetshenziswa counterweights ezine. Pads soldered usebenzisa inverter Welding. Ngaphezu kwalokho, ukwenza idivayisi ngezandla zakho, ukukhwezwa ukwahlukanisa ngaphansi insika. Inzuzo ukushabalalisa endaweni bungatholakala esebenzisa struts lateral.

Amadivayisi ngensimbi insika

Ku-steel insika VHF antenna elenziwe ngezandla zabo siqu etshekile retinaculum. Counterweights ifakiwe, ngokuvamile ohlangothini olulodwa. Abanye ochwepheshe batusa ukusetshenziswa izinqamu nge ububanzi 2.2 cm. Ukuze uthuthukise focus zedivayisi sisetshenziswa ishayela kugqame, okuyinto igibele ngasesinqeni se-antenna. Ukuze uxhume onobuhle wasebenzisa wire kusukela insika. Kubalulekile ukuphawula ukuthi kukhona amadivayisi nge side iyizingxenye. Banezinhliziyo conductivity eliphezulu.

Amadivayisi ngoba ongaphakeme ukuzwela abamukelayo

Isamukeli ukuzwela for ongaphakeme VHF antenna ngezandla zakho ziqhubeka ulula. Isinyathelo sokuqala kuvuna insika, ehambisana ukuma ohlangothini. Counterweights avame ukusetshenziswa nge Abaqondisi etshekile. Fanisa Kumiswa nge sizindza lesicinile. Ngo onobuhle zalolu hlobo kumele kusetshenziswe kugqame yezintambo. Counterweights angase afakwe endaweni evundlile. Ukuze yokukhulisa inzuzo ovunyelwe ukhweze strut ubukhulu omude 2.2 cm.

Models sensitivity high abamukelayo

Ukuze idatha abamukelayo VHF antenna for 430 MHz izandla ke kwenziwa nge steel insika. Abanye ochwepheshe batusa kakhulu ukusetshenziswa kuphela yokubeka lwalugobile. Kulokhu, lo counterweights kumele lulungiswe at uzimele base. Ezivamile VHF antenna ngezandla zakho kwenziwa izinhlobo ezahlukene reflectors.

Qala ukulungisa inhlangano kunilungele ukuzizuzela insika futhi zichithe izintambo ukuxhuma. Ngaphezu kwalokho, ukwenza idivayisi ngezandla zakho kudingeka usike izigxobo ezine nge ububanzi 2.2 cm. Imodeli ku 200 MHz kufanele kube ezintathu ohlangothini Racks. Counterweights angase afakwe i-engela 45 degrees. Wezinsika zixhunywe e phansi insika.