pwodwi yo Kategori
- FM emetris
- 0-50w 50w-1000w 2kw-10kw 10kw +
- televizyon emetris
- 0-50w 50-1kw 2kw-10kw
- FM Antèn
- televizyon Antèn
- antèn Pwodwi pou Telefòn
- Kab Connector Pouvwa Splitter Enbesil chaj
- RF Transistor
- Pouvwa ploge
- Équipements Audio
- DTV Front Fen Ekipman
- Sistèm Link
- sistèm stl Microwave sistèm Link
- FM Radyo
- Pouvwa Meter
- Lòt pwodwi
- Espesyal pou Coronavirus
pwodwi yo Tags
Fmuser sit
- es.fmuser.net
- it.fmuser.net
- fr.fmuser.net
- de.fmuser.net
- af.fmuser.net -> Afriken
- sq.fmuser.net -> Albanyen
- ar.fmuser.net -> Arab
- hy.fmuser.net -> Armenian
- az.fmuser.net -> Azerbaydjan
- eu.fmuser.net -> Basque
- be.fmuser.net -> Belarisyen
- bg.fmuser.net -> Bulgarian
- ca.fmuser.net -> Katalan
- zh-CN.fmuser.net -> Chinwa (senplifye)
- zh-TW.fmuser.net -> Chinwa (Tradisyonèl)
- hr.fmuser.net -> Kwoasyen
- cs.fmuser.net -> Czech
- da.fmuser.net -> Danwa
- nl.fmuser.net -> Olandè
- et.fmuser.net -> Estonyen
- tl.fmuser.net -> Filipino
- fi.fmuser.net -> Finnish
- fr.fmuser.net -> Franse
- gl.fmuser.net -> Galisyen
- ka.fmuser.net -> Georgian
- de.fmuser.net -> Alman
- el.fmuser.net -> Greek
- ht.fmuser.net -> Kreyòl ayisyen
- iw.fmuser.net -> ebre
- hi.fmuser.net -> Hindi
- hu.fmuser.net -> Hungarian
- is.fmuser.net -> Icelandic
- id.fmuser.net -> Endonezyen
- ga.fmuser.net -> Ilandè
- it.fmuser.net -> Italyen
- ja.fmuser.net -> Japonè
- ko.fmuser.net -> Koreyen
- lv.fmuser.net -> Latvian
- lt.fmuser.net -> Lithuanian
- mk.fmuser.net -> Masedwan
- ms.fmuser.net -> Malay
- mt.fmuser.net -> Maltese
- no.fmuser.net -> Norwegian
- fa.fmuser.net -> Pèsik
- pl.fmuser.net -> Polonè
- pt.fmuser.net -> Pòtigè
- ro.fmuser.net -> Romanian
- ru.fmuser.net -> Ris
- sr.fmuser.net -> Sèb
- sk.fmuser.net -> Slovak
- sl.fmuser.net -> Slovenian
- es.fmuser.net -> Panyòl
- sw.fmuser.net -> Swahili
- sv.fmuser.net -> Syèd
- th.fmuser.net -> Thai
- tr.fmuser.net -> Tik
- uk.fmuser.net -> Ikrenyen
- ur.fmuser.net -> Oudou
- vi.fmuser.net -> Vietnamese
- cy.fmuser.net -> Welsh
- yi.fmuser.net -> Yiddish
Lapli fennen sou mikwo ond Lyen
Mikwo ond Link Rain FadeRain fennen refere prensipalman a absòpsyon nan yon frekans radyo mikwo ond (RF) siyal pa lapli atmosferik, nèj oswa glas, ak pèt ki espesyalman répandus nan frekans ki pi wo a 11 GHz. Li refere tou a degradasyon yon siyal ki te koze pa entèferans elektwomayetik nan kwen dirijan nan yon devan tanpèt. Lapli fennen ka koze pa presipitasyon nan uplink la oswa kote downlink. Sepandan, li pa bezwen lapli nan yon kote pou li ka afekte pa lapli fennen, kòm siyal la ka pase nan presipitasyon anpil kilomèt lwen, espesyalman si plat satelit la gen yon ang gade ki ba. Soti nan 5 a 20 pousan nan lapli fennen oswa siyal satelit atenuasyon pouvwa tou ki te koze pa lapli, nèj oswa glas sou uplink la oswa downlink reflektè antèn, radom oswa kòn manje. Lapli fennen pa limite a sa sèlman satelit uplinks oswa downlinks, li tou ka afekte pwen tè a pwen mikwo ond lyen (sa yo ki sou sifas latè a).
Fason posib simonte efè yo nan lapli fennen yo se divèsite sit, uplink kontwòl pouvwa, varyab pousantaj kodaj, k ap resevwa antèn pi gwo (sa vle di pi wo genyen) pase gwosè yo egzije a pou kondisyon metewolojik nòmal, ak kouch idrofob.
De modèl yo jeneralman itilize pou lapli modèl: Crane ak ITU. Se modèl la ITU jeneralman pi pito pa planifikatè mikwo ond. Yon kat mondyal distribisyon lapli selon modèl ITU yo montre anba a:
Global ITU lapli fennen Map pou mikwo ond Link Planifikasyon Disponibilite
Itilize nan konjonksyon avèk zouti planifikasyon apwopriye, done sa yo ka itilize pou predi espere disponiblite operasyonèl (an%) nan yon lyen mikwo ond. Chif itil Disponibilite Operasyon tipikman varye de 99.9% ("twa nèf") a 99.999% ("senk nèf"), epi yo se yon fonksyon nan bidjè a lyen an jeneral ki gen ladan bann frekans, gwosè antèn, modulation, sansiblite reseptè ak lòt faktè.
Yon lòt itil lapli Fade kat jeyografik yo montre isit la, ki montre 0.01% pousantaj la depase lapli anyèl:
CableFree ITU-R lapli fennen Map - Global pou 0.01% pousantaj depase lapli chak ane
Pou plis enfòmasyon sou sijè sa a, tanpri Kontakte nou