Kodi Best Commercial FM Radio Transmitter ndi iti?

Kodi Njira Yabwino Kwambiri Yotumizira Wailesi ya FM ndi iti?

Wotumiza wailesi ya FM ndiye maziko a kampani iliyonse yowulutsa zamalonda, chifukwa cholinga cha wailesiyi ndi kufalitsa dera linalake ndi kuulutsa mawu kwa wolandira aliyense, monga wailesi. Ma transmitter a FM ndi zida zamagetsi zomwe zimatumiza ma wayilesi.

 

Kodi FM Radio Transmitter ndi chiyani ?

Mu wailesi ya wailesi, malonda a FM radio transmitter mosakayika ndi zida zofunika kwambiri, chifukwa ndi udindo wotembenuza mawu a wolengeza ndi mawu a nkhani zina zowulutsa kukhala zizindikiro za wailesi, ndikuwulutsa kwa wolandira wa dera lonse lomvetsera kudzera mu mlongoti. Pawayilesi, maikolofoni yanu ikhoza kukhala yosakwanira, kapena simungakhale ndi purosesa ndi chosakaniza kuti mumveke bwino, koma ngati palibe chowulutsira wailesi ya FM, kapena kufalitsa kwake sikukwanira, simungathe. kuulutsa mawu anu kunja.

 

Mphamvu ya transmitter ya FM imayambira 1W mpaka 10kW. Nthawi zambiri zimagwira ntchito limodzi ndi mlongoti wa FM ndi zipangizo zina zomvetsera ndi zotulutsa, monga maikolofoni, wailesi, chosakanizira, purosesa ya mawu, ndi zina zotero. mpaka makumi a kilomita. Choncho, ili ndi ntchito zambiri. Itha kugwiritsidwa ntchito powulutsa anthu ammudzi, kuyendetsa galimoto muutumiki, mawayilesi aukadaulo, ndi zina zotero.

 

Izi ndizowona makamaka kwamakampani owulutsa malonda. Ayenera kugula ma transmitter omwe amagwira ntchito bwino kwambiri kuti awonetsetse kuti njira yawo yowulutsira ndi yayikulu mokwanira komanso chizindikiro chawayilesi ndi chokhazikika mokwanira, kuti apereke ntchito zabwino kwambiri zoulutsira omvera ndikudziwikiratu pakati pamakampani ambiri owulutsa malonda. Ndiye ndi mtundu wanji wa ma transmitter a FM omwe ali oyenera kwambiri kumakampani owulutsa? Zotsatirazi zidzakuuzani mwatsatanetsatane.

  

Ndi Transmitter Yamtundu Wanji Yoyenera Kugwiritsa Ntchito Malonda?

Pankhani yotsatsa malonda, mumaganiza mawu otani? Kuphimba kwakukulu, kumveka bwino kwa mawu, nthawi yayitali yowulutsa, zida zoulutsira zaukadaulo. Izi ziri bwino. Ngati otsatsa akufuna kupanga wayilesi yotere, amafunikira chowulutsa cha FM chochita bwino kwambiri. Mawayilesi owulutsa a FM ngati awa akwaniritsa izi.

 

Mawayilesi owulutsa ndiakulu mokwanira - wayilesi yamalonda imatha kuphimba mzinda wonse, zomwe zikutanthauza kuti ingafunike kuwulutsa ma kilomita makumi ambiri, chifukwa chake mungafunike chowulutsa chokhala ndi mphamvu ya ma watts mazana kapena ma kilowatts. Ngati mukufuna kudziwa kuchuluka kwa ma transmitter okhala ndi mphamvu zosiyanasiyana, dinani apa kuti mudziwe zambiri.

 

Momwe ma frequency band- Iyi ndi nkhani yofunika kwambiri. Mayiko ambiri padziko lapansi amagwiritsa ntchito 87.5 - 108.0 MHz ngati bandi yowulutsa pafupipafupi, koma maiko ena amagwiritsa ntchito magulu ena afupipafupi ngati gulu lowulutsa pafupipafupi. Mwachitsanzo, Japan amagwiritsa ntchito 76.0 - 95.0 MHz bandi, pamene mayiko ena kum'mawa kwa Ulaya amagwiritsa 65.8 - 74.0 MHz bandi. Ma frequency ogwiritsira ntchito ma transmitter omwe mumagula amayenera kukwaniritsa ma frequency band omwe amaloledwa m'dziko lanu.

 

Onetsetsani kuti phokoso lapamwamba kwambiri - muyenera kutero kudzera pa wailesi ya FM ndi mawu abwino okwanira. Mukhoza kusankha molingana ndi muyezo uwu. SNR ndi yayikulu kuposa 40dB, kupatukana kwa stereo ndikokulirapo kuposa 40dB, ndipo kupotozako ndikochepera 1%. Phokoso laphokoso loperekedwa ndi chowulutsira pokumana ndi miyezo imeneyi likhala laling'ono. Ma transmitter ayeneranso kukhala ndi ukadaulo wa digito wa DSP / DDS kuti azitha kumveka bwino, chifukwa mtundu wamawu udzakhala wabwino kwambiri.

 

Pakhoza kukhala zotsalira zina. Tiyeni tipereke chitsanzo, fmuser's fu618f-1000c FM yowulutsa stereo transmitter. Chifukwa cha kulekanitsa kwake kwa 75db SNR ndi 60dB stereo, 0.05% yokha yosokonekera, komanso yokhala ndi ukadaulo waposachedwa wa DSP ndi DDP, yakhala imodzi mwama transmitter omwe amagulitsidwa kwambiri pawayilesi ya FM, ndipo adayamikiridwa kwambiri monga "mkulu. khalidwe la mawu" ndi "phokoso lochepa".

 

Kuwulutsa kwa nthawi yayitali - mawayilesi amalonda amatanthauza kuti simungathe kulakwitsa, monga kulephera kwadzidzidzi kwa masekondi angapo, zomwe zingakhudze kwambiri mbiri ndi phindu la kampani yowulutsa. Chifukwa chake, kuti muulutse mokhazikika komanso kwa nthawi yayitali, chotumiziracho chiyenera kukhala ndi matekinoloje awa:

  • PLL imathandizira transmitter kuti azigwira ntchito mokhazikika pama frequency amodzi kwa nthawi yayitali popanda kusuntha pafupipafupi
  • Pulagi yotentha imalola chotumizira kuti chisinthe ma module owonongeka komanso olakwika osayimitsa kuwulutsa

Chowulutsira chachikulu chikalephera, makina a N + 1 amangoyambitsa makina oyimira kuti awonetsetse kuti wayilesi ikugwira ntchito bwino. Izi sizingakwaniritse zosowa za wayilesi yamalonda. Ngati mumagwira ntchito pawayilesi yamalonda ndipo mukufunika kupititsa patsogolo zosowa zina zowulutsa, chonde lemberani gulu la mainjiniya a fmuser, ndipo tikuyankhani mafunso anu malinga ndi momwe mulili.

  

Mukufunikanso Wopereka Wodalirika

Makampani otsatsa malonda amangofunika zida zabwino kwambiri, komanso amafunikira wothandizira zida zodalirika kuti akupatseni ntchito yabwino yotsatsa pambuyo pogulitsa kuti mupewe zovuta mukamagwiritsa ntchito. Panthawi imodzimodziyo, kusankha ogulitsa oyenerera kungakupulumutseninso ndalama zambiri. Kwa wailesi yamalonda ndi wailesi yakanema, ndikofunikira kwambiri kuchepetsa mtengo. Bwanji osasankha fmuser? Fmuser ndiwodalirika wopereka zida zoulutsira pawayilesi ndi mayankho, omwe angakupatseni phukusi lapamwamba komanso lotsika mtengo lowulutsira mawayilesi a FM pamawayilesi azamalonda. Ngati mukufuna, chonde omasuka kulankhula nafe! Tidzakupangitsani kumva kuti zosowa zanu zikumveka ndikumveka.

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