GWB104G ʻAiʻa LNB
Hōʻike huahana
ʻO GWB104G kahi LNB ākea ākea me ʻelua mau puka RF. Me ka oscillator kūloko 10.4GHz, hoʻololi ʻo GWB104G i nā hōʻailona 10.7GHz ~ 12.75GHz Ku band i nā 300MHz ~ 2350MHz outputs.
ʻO ka haʻahaʻa haʻahaʻa block downconverter (LNB) ʻo ia ka mea hoʻokipa i kau ʻia ma nā kīʻaha ukali, e hōʻiliʻili i nā nalu lekiō mai ke kīʻaha a hoʻohuli iā lākou i hōʻailona i hoʻouna ʻia ma ke kelepona i ka mea hoʻokipa i loko o ka hale. Ua kapa ʻia ʻo LNB he poloka haʻahaʻa haʻahaʻa, haʻahaʻa-noise hoʻololi (LNC), a i ʻole haʻahaʻa-noise downconverter (LND).
ʻO ka LNB ka hui pū ʻana o ka mea hoʻonui haʻahaʻa haʻahaʻa, ka mea hui pinepine, ka oscillator kūloko a me ka amplifier waena (IF). He lawelawe ia ma ke ʻano he RF mua o ka mea hoʻokipa ukali, e loaʻa ana ka hōʻailona microwave mai ka satellite i hōʻiliʻili ʻia e ke kīʻaha, e hoʻonui iā ia, a e hoʻohuli i ka poloka o nā alapine i kahi poloka haʻahaʻa o nā alapine waena (IF). ʻO kēia hoʻololi hoʻohaʻahaʻa e hiki ai i ka hōʻailona ke lawe ʻia i ka mea hoʻokipa TV satelite i loko me ka hoʻohana ʻana i ke kaula coaxial maʻalahi; inā mau ka hōʻailona ma kona alapine microwave mua, pono ia i kahi laina alakaʻi hawewe pipiʻi a kūpono ʻole.
ʻO ka LNB maʻamau he pahu liʻiliʻi i hoʻokuʻu ʻia ma luna o hoʻokahi a ʻoi aʻe paha nā puʻupuʻu pōkole, a i ʻole nā lima hānai, i mua o ka mea hōʻike manaʻo kīʻaha, ma kāna kikoʻī (ʻoiai aia kekahi mau mea hoʻolālā kīʻaha i ka LNB ma luna a ma hope paha o ka reflector). Lawe ʻia ka hōʻailona microwave mai ke kīʻaha e kahi mea hānai ma ka LNB a hāʻawi ʻia i kahi ʻāpana o ke alakaʻi nalu. Hoʻokahi a ʻoi aʻe paha nā pine metala, a i ʻole nā probes, puka i loko o ke alakaʻi nalu ma nā kihi ʻākau i ke koʻi a hana ma ke ʻano he antenna, e hānai ana i ka hōʻailona i kahi papa kaapuni paʻi i loko o ka pahu pale o LNB no ka hana ʻana. Puka mai ke alapine haʻahaʻa IF mai kahi kumu ma ka pahu kahi e hoʻopili ai ke kaula coaxial.
Nā hiʻohiʻona ʻē aʻe:
•ʻElua mau awa RF, kēlā me kēia 300MHz ~ 2350MHz.
•Kiʻi walaʻau haʻahaʻa.
•Hoʻokomo maʻalahi.
•Haʻahaʻa mana hoʻohana.
•Kiʻekiʻe kiʻekiʻe ka pale ʻana i ka wā.
•Ka uhi piha o Ku-Band no ka hoʻokipa Analog a me HD Digital.
