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

Main Features

• Copper, silver-plated brass, ndi aluminiyamu yapamwamba kwambiri
• Zosefera za 3-cavity, 4-cavity, kapena 6-cavity
• Kutayika kochepa koyika ndi VSWR
• Kudzipatula kwakukulu
• yaying'ono kapangidwe
• Yankho labwino kwambiri lotsika mtengo la ogula bajeti
• Mapangidwe opangidwa ndi mitundu ingapo a wayilesi
• yaying'ono kapangidwe

Ma Combiners Apamwamba Apamwamba Alinso mu Stock

Zophatikiza za Starpoint (Nthambi) za VHF Kufikira 20kW:

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

Zokwanira (CIB) VHF Combiners Up tp 10kW:

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

Mukuyang'ana zophatikizira zochulukira zapawayilesi yanu? Onani izi!

FM Combiners	Zophatikiza za VHF	UHF Combiners	L Band Combiners

• 10kW Starpoint VHF TV Combiner x 1PCS 

Chonde Lumikizanani Nafe Kuti Mumve Zambiri

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Zifukwa Ziwiri Zomwe RF Combiner Amagwiritsidwa Ntchito

Kuperewera kwa malo oyamba

Pamene anthu akusamukira kumadera akumidzi, zakhala zofunikila kwambiri kumanga nyumba zazikulu zoulutsira mawu zomwe zimatha kufikira madera okhala ndi anthu ambiriwa kuchokera kumadera apakati. Zoonadi, malo apamwambawa akhala amtengo wapatali, choncho ndizomveka kugwiritsa ntchito malo aliwonse mokwanira. Izi zitha kuchitika bwino pogawana tsamba la transmitter ndi mlongoti wamba pakati pa ogwiritsa ntchito angapo. Kuti akwaniritse izi, makampani opanga mawayilesi amagwiritsa ntchito ophatikiza amitundu ndi makulidwe osiyanasiyana. Mwachitsanzo, ku San Francisco (Mt. Sutro), Toronto (CN Tower), Montreal (Mt. Royal), New York City (Empire State Building), ndi Chicago (John Hancock ndi Sears Buildings), nsanja zazitali kapena nsanja zapamtunda. zakhala zikugwiritsidwa ntchito kuphatikiza malo owulutsira ambiri momwe ndingathere, kuphatikiza VHF-TV, UHF-TV, FM ndi njira zoyankhulirana zam'manja. Njirayi yatsimikizira kuti ndi yothandiza kwambiri, osati kungogwiritsa ntchito malo enieni mwachuma komanso kufalitsa mtengo wa nsanja kwa ogwiritsa ntchito ambiri.

Kukhala ndi ma wayilesi a FM pamsika kwadzetsa kuchuluka kwa ma wayilesi ophatikizana. Ndipo pakukhazikitsidwa kwa machitidwe a DTV, ma wayilesi a FM akukakamizidwa kuchoka pansanja zomwe zilipo, zomwe zimapangitsa kuti zikhale zofunikira kwambiri kuti azigawana malo a nsanja, zomwe zimawonjezera kufunikira kwa makina ophatikizana.

Zofunikira za FCC Kudzipatula 

Pamene siginecha yopitilira imodzi ikuwulutsidwa pa mlongoti umodzi, ma siginecha ayenera kuphatikizidwa m'njira yoti palibe mwayi woti ma siginowo ayankhe pa ma transmitters a wina ndi mnzake. Kukanika kutero kungalole kuti zinthu za intermodulation zipangidwe mkati mwa magawo omaliza a amplifier a ma transmitters ndikuwulutsa pa tinyanga. Zinthu zophatikizira izi nthawi zambiri zimatchedwa "spurs." Ma Spurs opangidwa pakati pa ma wayilesi a FM amatha kuchitika osati mu gulu la FM lokha komanso mkati mwa mayendedwe otsika a VHF komanso pamwamba pa gulu la FM zomwe zimayambitsa kusokoneza gulu la ndege. Kuphatikiza apo, FCC Rule 73.317(d) imatanthawuza kuti spurs yopitilira G00 kHz kuchotsedwa kwa chonyamulira iyenera kuchepetsedwa pansi pa ma frequency onyamula ndi 80 dB kapena 43 + 10log10 (mphamvu mu watts) dB, zilizonse zochepa. M'malo mwake, masiteshoni omwe amagwiritsa ntchito mphamvu zotulutsa ma transmitter a 5 kW kapena kupitilira apo nthawi zambiri amayenera kukwaniritsa zofunikira za 80 dB, pomwe masiteshoni omwe ali ndi ma TPO otsika (zotulutsa mphamvu zamagetsi) amagwera pansi panjira yowerengera.

Zochitika zawonetsa kuti popewa ma spurs, wotumizira aliyense ayenera kudzipatula kwa ena onse mudongosolo ndi osachepera 40 dB, ndi 4G mpaka 50 dB kuwonetsetsa kutsata malamulo. Spur attenuation imatheka ndi kuphatikiza kwa transmitter kutembenuka-kutayika ndi kusefa. Kutayika kozungulira ndi komwe kumatengera momwe ma spurs amapangidwira mu transmitter. Zotayika izi nthawi zambiri zimayenda mumtundu wa G-13 dB wama transmitters amtundu wa chubu, pomwe 15-25 dB ndiyofanana ndi mayunitsi olimba. Chizindikiro cha off-frequency chimachepetsedwa ndi 40 dB pamene chikudutsa muzosefera za bandpass ya module yophatikizira kupita ku transmitter ndi spur imapangitsa kutuluka kwa transmitter ndi G-25 dB yowonjezera pansi pamlingo womwe siginecha idalowa. Kuthamanga uku kumachepetsedwa 40 dB pamene ikudutsanso zosefera za bandpass. Zotsatira zake ndikuchepetsa kuchepa kwa 80 dB, ndi 100 dB kapena kupitilira apo.

M'dziko lamasiku ano, chophatikizira chakhala gawo lofunikira pamawunidwe owulutsa. Ndikofunika kuzindikira kuti ndi luso komanso zovuta. Malinga ndi ubwino ndi kuipa kwa msonkhanowo, wokonza dongosolo ayenera kusankha ntchito zenizeni. Misonkhano yokhazikitsidwa bwino komanso yolondola imapititsa chizindikiro chanu kwa omvera omwe akukhala kutali, ndipo kugwiritsa ntchito mitanda molakwika kungayambitse kuwunikira, zomwe zimabweretsa kudwala kwa chotumizira. 

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Chifukwa chiyani chophatikiza changa cha RF Imasiya Kugwira Ntchito

Pambuyo pazaka zambiri zoyesedwa mosalekeza ndi gulu laukadaulo la FMUSER, tidapeza kuti cholakwika chofala cha multiplexer ndikuti kukana kuyamwa kumatenthedwa.

Nthawi zina nyengo yoyipa (monga mvula yamkuntho), makina ophatikizira ophatikizira amakhala pachiwopsezo chachikulu cha mphezi. Panthawiyi, chophatikizira cha RF chikukumana ndi bingu, chikhoza kusiya kugwira ntchito, komanso kutopa kwa ma feed a nthambi zingapo. Ma transmitters angapo amatha kuwunikira kwambiri komanso kutsika kwamphamvu kwamagetsi, komanso kukana kuyamwa kumathanso kutenthedwa. Yankho lothandiza kwambiri ndikusintha mayamwidwe resistor.

Ndizofunikira kudziwa kuti pali zifukwa zosiyanasiyana zofotokozera chifukwa chomwe chophatikizira chanu cha RF chimasiya kugwira ntchito, zomwe zimafuna kuti akatswiri a RF azichitira mosiyana ndikuchotsa cholakwikacho. Samalani pamene chodyetsa chikulephera kapena chiwonetsero cha transmitter chikuwonjezeka. Chonde yang'anani nthawi ngati chophatikizira cha RF chimakhala ndi kutentha koyipa komanso ngati kukana kwa mayamwidwe ndikoyenera.

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Zifukwa Zina Zina Zofotokozera Chifukwa Chake RF Combiner Yanu Isiya Kugwira Ntchito

Pakukonza kwachizoloŵezi, tinapezanso kuti kukana kuyamwa kunawonongeka ndipo mtengo wotsutsa unakula. Pakati pa ntchitoyo, sitinapeze kuti transmitter ikuwonetsa kwambiri kapena kutsika mphamvu yamagetsi, ndipo VSWR ya feeder ya mlongoti inalinso yachibadwa. Izi zachitika kangapo. Pambuyo pofufuza mosamala, amakhulupirira kuti zifukwa zingakhale zosiyanasiyana. Zotsatira zake ndi izi.

1. Ngati chowonjezera cha mlongoti sichinali chachilendo, chidzakhudza kugwira ntchito kwa chophatikizira cha RF. Mwachitsanzo, kukana kutchinjiriza kwa chodyetsa chachikulu kumatha kukhala kocheperako; nyengo yoyipa monga mvula ndi chipale chofewa zidzabweretsa kufupika kwanthawi yomweyo, kuzungulira kotseguka, komanso kutsika koyipa kwa mafunde ku mlongoti, zonsezi zipangitsa kuti mphamvu zina zibwererenso.
2. Mndandanda wa chophatikizira cha RF umakhala woipitsitsa, kudzipatula kwa 3dB directional coupler kumakhala kotsika, ndipo fyuluta ya bandpass imakula. Malinga ndi mfundo yodziwika bwino, tikudziwa kuti padzakhala kutayikira kumapeto kwa 3dB directional coupler, ndipo ndizosatheka kuti fyuluta ya bandpass iwonetsere chizindikiro cha kunja kwa gulu. Pamene mphamvu yopita kumapeto kwa kudzipatula imakhala yayikulu kwambiri mpaka kupitirira mphamvu yoyesedwa ya katundu woyamwitsa, kutentha kwa katundu woyamwitsa kumawuka ndikuwotcha potsiriza.
3. Ngati kusinthasintha kuli kwakukulu kwambiri, bandwidth ya siginecha ya RF imakhala yayikulu, ndipo mphamvu yomwe idatsikira ku choletsa mayamwidwe imawonjezeka. Ma transmitter exciter nthawi zambiri sakhala ochepa, ndipo makina osinthira oyambilira nthawi zambiri amakhala opitilira 130%.
4. Mphamvu ina idzasamutsidwa ku katundu woyamwa chifukwa cha kusinthasintha kwafupipafupi kwa fyuluta ya band-pass, chonyamulira chafupipafupi cha transmitter, kusagwirizana pakati pa RF chophatikizira ndi mlongoti, ndi zina zotero.

Malangizo ochokera kwa FMUSER: kuwonongeka kwa kukana kuyamwa kungayambitsidwe ndi chimodzi kapena zingapo. Ngati kukana kuyamwa sikunalowe m'malo munthawi yake, mphamvu yotsatiridwa ndi choletsa mayamwidwe imawonetsedwa mu chotumizira, chomwe chidzavulaza kwambiri.

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Multiplexing ndi chiyani komanso momwe imagwirira ntchito

Njira ya Multiplexing RF Signals - RF Multiplexer

Multiplexer ndi chipangizo chomwe chimalola chidziwitso cha digito kuchokera kuzinthu zingapo kuti chidutse pamzere umodzi kuti chitumizidwe kumalo amodzi. A demultiplexer imagwira ntchito mobwerezabwereza. Zimatengera chidziwitso cha digito kuchokera pamzere umodzi ndikugawira ku nambala yoperekedwa ya mizere yotulutsa.

Multiplexing ndi njira yotumizira uthenga kuchokera ku magwero angapo kupita ku siginecha imodzi pogwiritsa ntchito media zomwe zimagawidwa. Munjira iliyonse yolankhulirana yomwe ili ya digito kapena analogi, timafunikira njira yolumikizirana yotumizira. Njirayi ikhoza kukhala yawaya kapena ulalo wopanda zingwe. Sikoyenera kugawira tchanelo payekha kwa wogwiritsa aliyense.

Chifukwa chake gulu lazizindikiro limaphatikizidwa pamodzi ndikutumizidwa panjira wamba. Kwa izi timagwiritsa ntchito ma multiplexers. Titha kuyerekeza ma multiplex kapena ma sign a digito. Ngati chizindikiro cha analogi chachulukitsidwa, mtundu uwu wa multiplexer umatchedwa multiplexer analogi. Ngati chizindikiro cha digito chikuchulukitsidwa, mtundu uwu wa multiplexer umatchedwa digital multiplexer.

Chifukwa chiyani RF Multiplexer ndiyofunikira?

Titha kusamutsa zizindikiro zambiri ku sing'anga imodzi. Njirayi imatha kukhala yolumikizirana monga chingwe cha shaft, kondakitala wachitsulo, kapena ulalo wopanda zingwe, ndipo ma sign ambiri amayenera kukonzedwa kamodzi.

Choncho, mtengo wotumizira ukhoza kuchepetsedwa. Ngakhale kupatsirana kumachitika panjira imodzi, sizichitika nthawi imodzi. Kawirikawiri, multiplexing ndi njira yomwe zizindikiro zambiri za mauthenga zimaphatikizidwa kukhala chizindikiro chamagulu kuti mauthengawa azitha kufalitsidwa pa njira wamba.

Pofuna kutumiza zizindikiro zosiyanasiyana pa njira imodzi, chizindikirocho chiyenera kupatulidwa kuti zisasokonezedwe pakati pawo, ndiyeno amatha kuwalekanitsa mosavuta pamapeto olandira.

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