167-223 MHz 1 5/8" 4 Cav. VHF Starpoint 10kW Transmitter Combiner Compact Cavity Duplexer ye-VHF Combiner Multicoupler System

Izici main

• Ithusi, i-silver-plated brass, ne-alloy yekhwalithi ephezulu ye-aluminium
• 3-cavity, 4-cavity, noma 6-cavity izihlungi
• Ukulahleka kokufakwa okuphansi kanye ne-VSWR
• Ukuzihlukanisa okuphezulu
• Umklamo ohlanganisiwe
• Isixazululo esingcono kakhulu sokusakaza esinezindleko eziphansi somthengi webhajethi
• Idizayini ehlanganisiwe nenezakhiwo eziningi zesiteshi sokusakaza
• Umklamo ohlanganisiwe

Ama-Combiners Wokudluliswa Kwekhwalithi Ephezulu Asesitokweni

I-Starpoint (Igatsha) I-VHF Combiners Efinyelela ku-20kW:

• 4 noma 6 Cav. 7/16 DIN 1kW Starpoint VHF Transmitter Combiner
• 1 5/8" 4/6 Cav. 3kW VHF Starpoint Transmitter Combiner
• 4 noma 6 Cav. 1 5/8" 6kW VHF Starpoint Transmitter Combiner 

I-Balanced (CIB) VHF Combiners Up tp 10kW:

• 1 5/8" 3 noma 4 Cav. 15kW I-Balanced VHF Transmitter Combiner
• 1 5/8" 3 noma 4 Cavity 15kW VHF Transmitter Combiner 
• 3 1/8" 24kW VHF 6 Cavity Digital Balanced VHF Transmitter Combiner
• 3 1/8" 3 noma 4 Cav. 40kW I-Balanced VHF Transmitter Combiner

Ingabe ufuna izihlanganisi zokusakaza ezengeziwe zesiteshi sakho sokusakaza? Hlola lezi!

Ama-FM Combiners	Ama-VHF Combiners	Ama-UHF Combiners	L Band Combiners

• 10kW Starpoint VHF TV Combiner x 1PCS 

Sicela usithinte ukuze uthole olunye ulwazi

▲ Buyela Kokuqukethwe ▲

Izizathu Ezimbili Zokusebenzisa I-RF Combiner

Ukushoda kwezindawo ezibalulekile

Njengoba abantu befudukela ezindaweni ezingaphansi kwedolobha, sekuthandeka kakhulu ukwakha izikhungo ezinkulu zokusakaza ezingafinyelela kulezi zindawo ezinabantu abaningi zisuka ezindaweni ezimaphakathi. Yiqiniso, lezi zindawo eziyinhloko sezibaluleke kakhulu, ngakho-ke kunengqondo ukusebenzisa indawo ngayinye ngokugcwele. Lokhu kungenziwa kangcono kakhulu ngokwabelana ngendawo yokudlulisela kanye nothi oluvamile phakathi kwabasebenzisi abambalwa. Ukufeza lokhu, imboni yokusakaza isebenzisa izihlanganisi zezinhlobo nosayizi abahlukahlukene. Ngokwesibonelo, eSan Francisco (eMt. Sutro), eToronto (CN Tower), Montreal (Mt. Royal), New York City (Empire State Building), naseChicago (John Hancock and Sears Buildings), imibhoshongo emide noma imibhoshongo emibhoshongweni emikhulu. asetshenziselwe ukuhlanganisa izikhungo zokusakaza eziningi ngangokunokwenzeka, okuhlanganisa i-VHF-TV, i-UHF-TV, i-FM kanye nezinsiza zokuxhumana zeselula. Le ndlela ibonakale iphumelela kakhulu, ingasebenzisi nje kuphela indawo ethengiswayo ngokwezomnotho kodwa futhi nokusabalalisa izindleko zombhoshongo kubasebenzisi abaningi.

Ubunikazi beqembu beziteshi ze-FM emakethe buholele ekwandeni kweziteshi ezihlanganisiwe. Futhi ngokusetshenziswa kwezinhlelo ze-DTV, iziteshi ze-FM ziphoqeleka ukuthi ziphume emibhoshongweni ekhona, okwenza kudingeke nakakhulu ukuthi zabelane ngendawo yombhoshongo, okwandisa isidingo sezinhlelo ezihlanganisiwe.

Izimfuneko ze Ukuhlukaniswa kwe-FCC 

Uma isignali engaphezu kweyodwa isakazwa ngothi olulodwa, amasignali kufanele ahlanganiswe ngendlela yokuthi kungabikho ithuba lokuba amasignali aphendule kubathumeli bomunye nomunye. Ukwehluleka ukwenza lokho kuzovumela imikhiqizo ye-intermodulation ukuthi yenziwe ngaphakathi kwezigaba zokugcina ze-amplifier zama-transmitters futhi isakazwe ngothi. Le mikhiqizo ye-intermodulation ngokuvamile ibizwa ngokuthi "i-spurs." Ama-Spurs adalwe phakathi kweziteshi ze-FM angeke avele ebhendini ye-FM kuphela kodwa naseziteshini eziphansi ze-VHF nangaphezulu kwebhendi ye-FM edala ukuphazamiseka ebhendi yezindiza. Ngaphezu kwalokho, uMthetho we-FCC 73.317(d) ucacisa ukuthi i-spurs engaphezu kuka-G00 kHz ekhishiwe kusiphathi kufanele incishiswe ngaphansi kwefrikhwensi yenkampani yenethiwekhi ngo-80 dB noma ngo-43 + 10log10 (amandla ngamawatts) dB, kuye ngokuthi ikuphi okuncane. Empeleni, iziteshi ezisebenzisa amandla okukhipha ama-transmitter angu-5 kW noma ngaphezulu kufanele ngokuvamile zihlangabezane nemfuneko engu-80 dB, kuyilapho iziteshi ezisebenzisa ama-TPO aphansi (okuphuma kwamandla okudlulisa) ziwela ngaphansi kwendlela yokubala.

Isipiliyoni sikhombisile ukuthi ukuvimbela ama-spurs, isidlulisi ngasinye kufanele sihlukaniswe nabo bonke abanye ohlelweni ngenani eliphansi lama-40 dB, ne-4G kuye ku-50 dB eqinisekisa ukuthobela imithetho. Ukuncishiswa kwe-Spur kwenziwa ngenhlanganisela yokulahleka kokuguqula nokuhlunga. Ukulahlekelwa okuphendukayo kuhambisana nendlela ama-spurs adalwa ngayo kusidlulisi. Lokhu kulahlekelwa kuvame ukugijima kububanzi be-G-13 dB kuma-transmitters ohlobo lweshubhu, kuyilapho i-15-25 dB ijwayelekile kumayunithi esifunda esiqinile. Isiginali ye-off-frequency incishiswa ngo-40 dB njengoba idlula kuzihlungi ze-bandpass zemojula yesihlanganisi ibheke kusidlulisi nge-spur idala ukuphuma kusidlulisi nge-G-25 dB eyengeziwe ngaphansi kwezinga isignali efakiwe. Le spur ibe isincishiswa ngo-40 dB njengoba idlula emuva kuzihlungi ze-bandpass. Umphumela uba ukuncishiswa kwe-spur okungenani okungu-80 dB, ngo-100 dB noma ngaphezulu okungenzeka.

Ezweni lanamuhla, isihlanganisi sesiyingxenye ebalulekile yochungechunge lokusakaza. Kubalulekile ukuqaphela ukuthi iwubuchwepheshe nobunkimbinkimbi. Ngokuya ngezinzuzo kanye nokubi komhlangano, umklami wesistimu udinga ukukhetha izinhlelo zokusebenza ezithile. Imihlangano yokushuna efakwe kahle futhi elungile idlulisela isignali yakho kuzithameli ezihlala kude, futhi ukusetshenziswa okungafanele kweziphambano kungaholela ekucabangeni, okuholela empilweni embi yesithumeli. 

▲ Buyela Kokuqukethwe ▲

Kungani Isihlanganisi Sami se-RF Siyeka Ukusebenza

Ngemva kweminyaka yokuhlolwa okuqhubekayo yithimba lezobuchwepheshe le-FMUSER, sithole ukuthi iphutha elivamile le-multiplexer ukuthi ukumelana nokumuncwa kushile.

Kwezinye izimo zezulu ezimbi (ezifana nokuduma kwezulu), isistimu yokuphakelayo yesihlanganisi isengozini kakhulu yomthelela wombani. Ngalesi sikhathi, isihlanganisi se-RF sichayeka ekudumeni, singase siyeke ukusebenza, kanye nokukhathala kokuphakelayo kwamagatsha amaningi. Ama-transmitters amaningana angase abe nokubonisa ngokweqile kanye nokwehla kwamandla kagesi aphezulu, futhi ukumelana nokumuncwa kungase kushiswe. Isixazululo esisebenza kahle kakhulu ukufaka esikhundleni se-resistor yokumuncwa.

Kuyaphawuleka ukuthi kunezizathu ezihlukene zokuchaza ukuthi kungani isihlanganisi sakho se-RF siyeka ukusebenza, okudinga ukuthi ochwepheshe be-RF bayiphathe ngendlela ehlukile futhi basuse iphutha. Naka lapho isiphakeli sihluleka noma ukubonakaliswa kwesidlulisi kuyanda. Sicela uhlole izikhathi ukuthi isihlanganisi se-RF sinokukhuphuka kwezinga lokushisa okungavamile nokuthi ingabe ukumelana nomthwalo wokumuncwa kuyinto evamile.

▲ Buyela Kokuqukethwe ▲

Izizathu Ezine Ezengeziwe Zokuchaza Kungani I-RF Combiner Yakho Iyeka Ukusebenza

Ngesikhathi sokulungiswa okujwayelekile, siphinde sathola ukuthi ukumelana nokumuncwa konakalisiwe futhi nenani lokumelana libe likhulu. Maphakathi nomsebenzi, asitholanga ukuthi isidluliseli sibonise kakhulu noma sehle i-voltage ephezulu, futhi i-VSWR yesiphakeli se-antenna nayo ibijwayelekile. Lokhu sekwenzeke izikhathi eziningana. Ngemva kokuhlaziya ngokucophelela, kukholelwa ukuthi izizathu zingase zibe ezihlukahlukene. Umphumela uba kanje.

1. Uma i-antenna feeder ingajwayelekile, izophazamisa ukusebenza kwesihlanganisi se-RF. Isibonelo, ukumelana nokushisa kwesiphakeli esikhulu kungase kube kuncane; Isimo sezulu esibi njengemvula nesithwathwa sizoletha isifunda esifushane esisheshayo, isifunda esivulekile, kanye nesilinganiso samagagasi esimile esibi nakakhulu ku-antenna, zonke lezi zici zizokwenza amandla athile abuyele emuva.
2. Inkomba yesihlanganisi se-RF iba yimbi kakhulu, ukuhlukaniswa kwe-coupleal directional 3dB kuba phansi, futhi isihlungi se-bandpass siba banzi. Ngokomgomo ovamile, siyazi ukuthi kuzoba nokuvuza okuthile ekugcineni kokuhlukaniswa kwe-coupler eqondisayo engu-3dB, futhi akunakwenzeka ngesihlungi se-bandpass ukubonisa isiginali engaphandle kwebhendi ngokuphelele. Uma amandla esiphetho sokuhlukaniswa emakhulu kangangokuthi angadlula amandla alinganiselwe omthwalo wokumuncwa, izinga lokushisa lomthwalo wokumuncwa lizokhuphuka futhi lishise ekugcineni.
3. Uma ukuguquguquka kukukhulu kakhulu, umkhawulokudonsa wesiginali ye-RF uba mkhulu, namandla avuze kusimelaphi sokumunca ayakhula. I-transmitter exciter ngokuvamile ayinqunyelwe, futhi uhlelo lokuguquguquka kwasekuqaleni luvame ukuba ngaphezu kwe-130%.
4. Amandla athile azodluliselwa kumthwalo omuncayo ngenxa ye-resonance frequency offset yesihlungi se-band-pass, i-offset frequency frequency offset yenkampani yenethiwekhi, ukungafani kokuphazamiseka phakathi kwesihlanganisi se-RF kanye ne-antenna, njll.

Iseluleko esivela ku-FMUSER: ukulimala kokumelana nokumuncwa kungase kubangelwe isizathu esisodwa noma ngaphezulu. Uma ukumelana nokumuncwa kungashintshwa ngesikhathi, amandla athwalwa yi-resistor yokumuncwa azobonakala kusidlulisi, okuzodala umonakalo omkhulu.

▲ Buyela Kokuqukethwe ▲

Kuyini i-Multiplexing nokuthi Isebenza kanjani

I-Passageway of Multiplexing RF Signals - RF Multiplexer

I-multiplexer iyithuluzi elivumela ulwazi lwedijithali olusuka emithonjeni embalwa ukuthi luhanjiswe emugqeni owodwa ukuze ludluliselwe endaweni eyodwa. I-demultiplexer yenza umsebenzi ophambene wokuphindaphinda. Kuthatha ulwazi lwedijithali emugqeni owodwa bese lusabalalisa enanini elinikeziwe lemigqa yokuphumayo.

I-Multiplexing inqubo yokudlulisa ulwazi kusuka emithonjeni engaphezu kowodwa kuya kusignali eyodwa ngemidiya eyabiwe. Kunoma yiluphi uhlelo lwezokuxhumana oluyidijithali noma lwe-analogi, sidinga ishaneli yokuxhumana ukuze sidlulise. Lesi siteshi singaba isixhumanisi esinezintambo noma esingenantambo. Akwenzeki ukwaba ishaneli ngayinye kumsebenzisi ngamunye.

Ngakho-ke iqembu lamasignali lihlanganiswa ndawonye futhi lithunyelwe ngesiteshi esisodwa. Kulokhu sisebenzisa ama-multiplexers. Singakwazi ukulingisa okuningi noma amasignali edijithali. Uma isignali ye-analog iphindwaphindwa, lolu hlobo lwe-multiplexer lubizwa ngokuthi i-analog multiplexer. Uma isignali yedijithali iphindwe kabili, lolu hlobo lwe-multiplexer lubizwa ngokuthi i-digital multiplexer.

Kungani i-RF Multiplexer ibalulekile?

Singadlulisela inombolo enkulu yamasiginali kusisetshenziswa esisodwa. Isiteshi singaba into ebonakalayo njengekhebula le-shaft, i-conductor yensimbi, noma isixhumanisi esingenantambo, futhi ubuningi bezimpawu kufanele bucutshungulwe kanye.

Ngakho-ke, izindleko zokudlulisa zingancishiswa. Ngisho noma ukudluliswa kwenzeka esiteshini esisodwa, akwenzeki ngesikhathi esifanayo. Ngokuvamile, ukuphindaphinda kuyindlela lapho amasignali emilayezo eminingi ehlanganiswa abe isignali eyinhlanganisela ukuze lawa masignali emilayezo akwazi ukudluliselwa esiteshini esivamile.

Ukuze kudluliselwe amasignali ahlukahlukene esiteshini esifanayo, isignali kufanele ihlukaniswe ukuze kugwenywe ukuphazamiseka phakathi kwazo, bese zingazihlukanisa kalula ekugcineni kokwamukela.

▲ Buyela Kokuqukethwe ▲