Masiku ano, njira zomwe zimagwiritsidwa ntchito kwambiri pakuwulutsa pawayilesi ndi AM ndi FM. M'mbiri, kuwulutsa kwa AM kumawoneka zaka zambiri m'mbuyomu kuposa kuwulutsa kwa FM, koma pomaliza, anthu amatengera antenna yowulutsa mawayilesi kwambiri. Ngakhale AM ​​akadali yofunika kwambiri, yakhala ikugwiritsidwa ntchito mochepa. Chifukwa chiyani timafunikira FM pamawayilesi? Nkhaniyi iyankha funsoli poyerekeza kusiyana pakati pa AM ndi FM. Tiyeni tiyambe!

Kugawana ndi Kusamalira!

Timasangalala 

Mitundu ya Kuwulutsa Kwawayilesi

Tiyeni tiphunzire kaye za AM ndi FM. Pakuwulutsa pawayilesi, pali njira zazikulu zitatu zosinthira: kusinthasintha kwa matalikidwe, kusinthasintha pafupipafupi, komanso kusinthasintha kwa gawo. Kusintha kwa gawo sikunagwiritsidwe ntchito kwambiri panobe. Ndipo lero timayang'ana kwambiri kukambirana kusinthasintha kwa matalikidwe ndi kusinthasintha pafupipafupi.

Kutalika kwa mamalikidwe

AM amatanthauza kusinthasintha kwa matalikidwe. Monga momwe dzinalo likusonyezera, imayimira chidziwitso cha ma audio kudzera mu matalikidwe a mafunde a wailesi. Mu kusinthasintha kwa matalikidwe, matalikidwe a chonyamulira, ndiko kuti, mphamvu ya siginecha imasintha molingana ndi matalikidwe a siginecha yomvera. Pawayilesi, AM makamaka imawulutsa ndi mafunde aatali ndi mafunde apakati, ndipo magulu ofananirako pafupipafupi amakhala otsika kwambiri komanso ma frequency apakati (ma frequency enieni amasiyana pang'ono malinga ndi malamulo a mayiko osiyanasiyana). Am amagwiritsidwa ntchito nthawi zambiri pamawayilesi afupi-wave, mawayilesi amateur, ma wayilesi anjira ziwiri, ma wayilesi amtundu wa Civil, ndi zina zotero.

Kusinthasintha Kwafupipafupi

FM imatanthauza kusinthasintha pafupipafupi. Mosiyana ndi AM, imayimira chidziwitso cha ma siginecha amawu kudzera pafupipafupi mafunde a wailesi. Pakusinthasintha kwafupipafupi, kusinthasintha kwa chizindikiro chonyamulira (chiwerengero cha nthawi zomwe zikusintha panopa pa sekondi iliyonse) zimasintha malinga ndi kusintha kwa siginecha yomvera. Pawailesi yakanema, imawulutsidwa makamaka m'magulu a frequency a VHF, ndipo ma frequency angapo ndi 88 - 108MHz (momwemonso, malamulo a mayiko kapena zigawo ndi zosiyana).

Ngakhale AM ​​ndi FM zimagwira ntchito yofananira pakuwulutsa pawayilesi, mawonekedwe awo pakuwulutsa nawonso amasiyana chifukwa cha njira zosiyanasiyana zosinthira, ndipo tidzafotokoza mwatsatanetsatane gawo lotsatira.

Kodi Kusiyana Pakati pa AM ndi FM ndi Chiyani?

Kusiyana pakati pa AM ndi FM kumawonekera makamaka pazifukwa izi:

Anti-kusokoneza luso

Cholinga choyambirira cha kupangidwa kwaukadaulo wa FM ndikuthana ndi vuto lomwe chizindikiro cha AM ndichosavuta kusokonezedwa. Koma FM imagwiritsa ntchito kusintha kwafupipafupi kuyimira chidziwitso cha audio, kotero sichidzakhudzidwa ndi kusintha kwa matalikidwe a siginecha yomvera. Nthawi zambiri, ma siginecha a FM satha kusokonezedwa.

Kutumiza Quality 

Njira iliyonse ya AM imakhala ndi bandwidth ya 10KHz, pomwe njira iliyonse ya FM imakhala ndi 200kHz. Izi zikutanthauza kuti ma siginecha a FM amatha kunyamula zidziwitso zambiri ndikufalitsa ma audio popanda kupotoza. Chifukwa chake, ma siginecha a FM nthawi zambiri amagwiritsidwa ntchito kuulutsa mapulogalamu anyimbo, pomwe ma siginecha a FM nthawi zambiri amagwiritsidwa ntchito kuulutsa mapulogalamu olankhula.

Kutumiza Mtunda

Am ma sign amawulutsa mafunde a wailesi okhala ndi mafunde otsika kapena mafunde ataliatali, zomwe zikutanthauza kuti amatha kuyenda motalikirapo ndikulowa muzinthu zambiri, monga mapiri. Komabe, chizindikiro cha FM chimatsekedwa mosavuta ndi zopinga. Chifukwa chake, zidziwitso zina zofunika, monga zolosera zanyengo, zambiri zamagalimoto, ndi zina zambiri, zimafalitsidwa kudzera muzizindikiro za AM. Nthawi yomweyo, m'madera ena akutali kapena mapiri, amafunikira AM kuti azitha kuwulutsa pawailesi.

Mtengo Womanga

Chifukwa kuwulutsa kwa FM ndikovuta kwambiri kuposa kuwulutsa kwa AM, makampani owulutsa mawailesi amayenera kusintha ma wayilesi a FM ndi zovuta zamkati komanso zokwera mtengo. Nthawi yomweyo, kuti athe kuphimba mzinda wonse momwe angathere, akufunikanso kugula ma transmitters angapo kapena njira zina zowulutsira zomwe zimagwiritsidwa ntchito kukulitsa mtunda wowulutsa (monga Studio Transmitter Link), zomwe mosakayikira zimakulitsa kwambiri mtengo wopangira zida zowulutsira. makampani.

Chifukwa cha khalidwe labwino kwambiri la kufalitsa kwa FM, lakhala likugwiritsidwa ntchito pofalitsa pawailesi mochulukira kuyambira pamene linatuluka mu 1933. Mungapeze zinthu zambiri zokhudzana ndi izi, Mawayilesi a FM, mawayilesi a FM, tinyanga ta FM, ndi zina zambiri, zomwe zimagwiritsidwa ntchito kwambiri pantchito zachinsinsi komanso zaboma monga wailesi yamagalimoto, mawayilesi oyendetsa galimoto, maphwando a Khrisimasi, mawayilesi ammudzi, mawayilesi amtawuni, ndi zina zambiri. kwa ma wayilesi a low-power fm:

50W FM Radio Broadcast Transmitter Yabwino Kwambiri FMT5.0-50H - Dziwani zambiri

Mafunso Ofunsidwa Kawirikawiri

1. Q: Kodi Kuthamanga kwa FM Station yamagetsi otsika ndikovomerezeka?

A: Zimatengera malamulo akomweko pa Radio Broadcasting. 

M'maiko ambiri padziko lonse lapansi, kuyendetsa wailesi ya FM yamagetsi otsika kumafunikira kuti mulembetse ziphaso kuchokera kwa oyang'anira owulutsa a FM & TV, kapena mudzakulipitsidwa. Chifukwa chake, chonde onaninso malamulo apawayilesi amdera lanu mwatsatanetsatane musanayambitse wailesi ya FM yamagetsi ochepa.

2. Q: Ndi Zida Zotani Zomwe Zimafunika Kuti Mukhazikitse Wailesi Yapawayilesi ya FM yamphamvu yochepa?

A: Ngati mukufuna kuyambitsa wayilesi ya FM yamphamvu yotsika, mufunika zida zingapo zoulutsira pawayilesi, kuphatikiza zida zapa wayilesi ya FM ndi zida zapa studio.

Nawu mndandanda wa zida zoyambira zomwe mukufuna:

• Wofalitsa wa FM;
• Phukusi la tinyanga za FM;
• RF zingwe;
• Zofunikira zowonjezera.

Ngati mukufuna kuwonjezera zida zina pawayilesi ya FM, nawu mndandanda wanu:

• Audio chosakanizira;
• Audio purosesa;
• Maikolofoni;
• Maikolofoni choyimira;
• BOP chophimba;
• Wokamba nkhani wapamwamba kwambiri;
• Zomverera m'makutu;
• Wogulitsa mahedifoni;
• etc.

3. Q: Kodi Ubwino wa Ma Transmitters a Low-power FM ndi ati?

A: Poyerekeza ndi ma transmitters amphamvu kwambiri a FM, ma transmitters amphamvu otsika a FM ndi opepuka, osavuta kuyenda, komanso ochezeka kwa oyambira.

Chifukwa cha kulemera kwake kopepuka komanso voliyumu yaying'ono, ndizosavuta kuti anthu azichotsa. Kuphatikiza apo, kugwiritsa ntchito kosavuta kumapangitsa anthu kudziwa kugwiritsa ntchito munthawi yochepa. Zimachepetsa ndalama zogwirira ntchito m'mbali zonse. 

4. Q: Ndi Mapulogalamu Ena Otani Angagwiritsire Ntchito Ma Transmitter a Low-power FM?

Yankho: Itha kugwiritsidwa ntchito pawailesi yakanema yapagulu ndikukwaniritsa zosowa zawayilesi wamba.

Ma transmitters a Low-power FM atha kugwiritsidwa ntchito m'mapulogalamu osiyanasiyana kuphatikiza pawailesi yamagalimoto, ntchito zoyendetsa galimoto, phwando la Khrisimasi, mawayilesi ammudzi, mawayilesi amtawuni, kuphatikiza kuwulutsa kusukulu, kuwulutsa kwapamisika, kuwulutsa kwafamu, chidziwitso cha mafakitale, mabizinesi. kuwulutsa pamisonkhano, kuwulutsa kowoneka bwino, kutsatsa, mapulogalamu anyimbo, mapulogalamu ankhani, kuwulutsa panja, kupanga masewero amoyo, malo owongolera, kuwulutsa malo, kuwulutsa kwa ogulitsa, ndi zina zambiri.

Yambitsani wayilesi ya FM Tsopano

Ngakhale kwa oyamba kumene, sizovuta kuyambitsa wayilesi yawoyawo. Monga ena, amafunikira zida zapamwamba kwambiri komanso zotsika mtengo zamawayilesi komanso ogulitsa odalirika. Ndichifukwa chake amasankha FMUSER. Mu FMUSER, mutha kugula ma wayilesi a FM pamtengo wa bajeti, kuphatikiza Zida zamawayilesi a FM zogulitsa, tinyanga za FM zogulitsa, ndi zina zofunika. Ngati mukufuna kupanga wayilesi yanu, chonde omasuka Lumikizanani nafe pompano!

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