Nkhani - Helical Duplexer Ya VHF/UHF Communications

Ma band a ma frequency a VHF/UHF akupitilizabe kugwira ntchito yofunika kwambiri pakulankhulana kwa anthu wamba komanso mafakitale.chozungulira cha helicalIli ndi magwiridwe antchito olondola osefera, kulimba kwake komanso mtengo wake ndi wotsika kwambiri, zomwe zimapangitsa kuti ikhale chisankho chabwino kwambiri pamakina a wailesi, ma repeater ndi mafoni.

Ubwino waukulu wa izicholumikizira cha helical mobileili ndi kapangidwe kake kozungulira, kogwirizana ndi kutalika konse¼ λukadaulo wa resonance. Kapangidwe kameneka kamalola kusintha mkati mwa Ma frequency a 150MHz ndi 380-450MHz amasiyana pamene akukwaniritsa kusungulumwa kopitilira 85 dB—kusefa bwino zinthu zamagetsi ndikuchepetsa kutayika kwa ma insertion mpaka pamlingo waukulu. Mwanjira yake,chozungulira cha helicalIli ndi nyumba yaying'ono yopangidwa ndi aluminiyamu, yowonjezeredwa ndi chassis yachitsulo chosagwiritsidwa ntchito ndi zinthu zina zoteteza Teflon. Kunja kwake kuli ndi vinyl yakuda yolimbana ndi dzimbiri, zomwe zimathandiza kuti ntchito ikhale yokhazikika ngakhale m'malo ovuta akunja ndi mafakitale.

⭐Zochitika Zitatu Zofunikira Zogwiritsira Ntchito

1. Zobwerezabwereza Zochepa Mphamvu: Imasunga Voltage Standing Wave Ratio (VSWR) yokhazikika panthawi yogwira ntchito kwa nthawi yayitali, imachepetsa kwambiri kutayika kwa mphamvu. Makamaka yoyenera kugwiritsidwa ntchito popanda kuyang'aniridwa m'mapiri, pansi pa nthaka, ndi madera ena, imathandiza kukulitsa kulumikizana.

2. Mawayilesi opanda zingwe a digito ndi analogi: Imaphimba ma frequency band a VHF 150 MHz ndi UHF 380–450 MHz, zomwe zimathandiza kuti pakhale kulumikizana bwino ndi zida zazikulu popanda kufunikira kusintha ma frequency ena. Imachotsa kwathunthu kulankhulana m'malo ovuta amagetsi, zomwe zimathandiza kulumikizana kwa akatswiri komanso kugwiritsa ntchito wailesi ya okonda masewera.

3. Foni Yonse Zipangizo za Duplex: Yokhala ndi kapangidwe kakang'ono, kukana kugwedezeka, komanso kusinthasintha kwa kutentha, imalola kutumiza kwa chizindikiro mosalala komanso molumikizana. Ndi gawo labwino kwambiri lofananira ndi zochitika monga kupulumutsa anthu mwadzidzidzi ndi ntchito zakumunda.

Poyerekeza ndi kuchuluka kwa duplexer yachikhalidwe, chinthuchi chimakwaniritsa bwino magwiridwe antchito ndi magwiridwe antchito, ndi zabwino zazikulu pakusunga mphamvu moyenera komanso kugwiritsa ntchito bwino ndalama. Ndi yoyenera kugwiritsidwa ntchito pamlingo waukulu m'mapulojekiti ang'onoang'ono komanso kukweza zida zaukadaulo, zomwe zimapereka chithandizo champhamvu pa kulumikizana kwa VHF/UHF kwa m'badwo wotsatira..

Lumikizanani nafe kuti mupeze mtengo! Chogulitsidwachi chimagwiritsidwa ntchito kwambiri pachitetezo cha anthu, zoyendera ndi zoyendera, makina odziyimira pawokha m'mafakitale, komanso wailesi ya okonda masewera, ndipo msika umadalira kwambiri.