Nā kānana RF Cavity

Ma hea e kūʻai ai i ka kānana haʻahaʻa no ke kahua lekiō?

ʻO FMUSER kekahi o nā mea hoʻolako lako studio lekiō alakaʻi no kahi kokoke i ka hapalua kenekulia. Mai ka makahiki 2008, ua hoʻokumu ʻo FMUSER i kahi ʻano hana e hānai ana i ka laulima hana ma waena o nā limahana o nā mea hoʻomohala ʻenekinia akamai loa a me kahi hui hana akahele. Ma o kēia ʻuhane a me ka hoʻolaʻa ʻana i ka laulima maoli, ua hiki iā FMUSER ke hana i kekahi o nā ʻaha uila hou loa, me ka hoʻohana ʻana i nā loina i hoʻāʻo ʻia i ka manawa o nehinei a me ka hoʻokomo ʻana i ka ʻepekema holomua o kēia lā. ʻO kekahi o kā mākou mau hoʻokō haʻaheo loa, a me kahi koho kaulana o kā mākou mau mea kūʻai aku he nui, ʻo kā mākou kānana haʻahaʻa RF no ke kahua lekiō.

" Inā ʻoe e ʻimi nei i nā lako kikowaena lekiō ʻoihana no ke kūʻai aku, no ke aha e koho ʻole ai i kekahi o kēlā mau lako studio hoʻolaha maikaʻi loa mai FMUSER? Uhi lākou i nā ʻano āpau o nā ʻākoakoa kānana radiofrequency, ʻo kekahi o lākou he mea nui no ke kahua lekiō, no ka laʻana, ka kānana haʻahaʻa FM, me nā HPF he nui no ke kūʻai aku, BPF no ke kūʻai aku, BSF no ke kūʻai aku, a me nā kānana lua haʻahaʻa no ke kūʻai aku e like me ke kānana haʻahaʻa 88-108Mhz no ke kūʻai aku. ʻO ke kānana UHF a me VHF e like me ke kānana bandpass UHF a me ke kānana bandpass VHF, a ʻoiaʻiʻo hoʻi, loaʻa iā lākou nā lako studio lekiō kiʻekiʻe no ke kūʻai aku. "

- - - - - James, lālā kūpaʻa o FMUSER

ʻO ka ʻĀpana aʻe, No ke aha e pono ai nā kānana mana haʻahaʻa RF? | Hōʻalo

He aha kā mākou e lawe ai iā ʻoe ma kēia ʻaoʻao

Ma hea e kūʻai ai i kāna kānana Pass Low?
No ke aha e pono ai nā kānana RF Low Pass?
Pehea e loaʻa ai nā Harmonic Annoying and Spurious Emissions?
ʻOi loa ka kānana RF Low Pass no ke kūʻai aku
Pehea e koho ai i ka kānana FM Harmonics maikaʻi loa no ka Radio Station?
Nā ʻike hoihoi e pili ana i nā kānana RF

Hana maikaʻi ʻo FMUSER 20kW FM Low Pass Filter ma:

Nā lekiō ʻoihana FM ma nā pae panalāʻau, kalana a me ke kaona
ʻO nā lekiō ʻokoʻa a me ka nui FM me ka uhi ākea ākea
ʻOihana lekiō FM me ka ʻoi aku o nā miliona o ka lehulehu
ʻO nā mea hoʻolele lekiō e makemake ana i nā hopena turnkey radio piha me ke kumu kūʻai haʻahaʻa

Mahalo i ka hale hana honua, ʻo FMUSER, ma ke ʻano he mea hana alakaʻi o nā kūʻai aku lako hoʻolaha, ua lawelawe maikaʻi i nā ʻano mea kūʻai aku āpau ma ka hāʻawi ʻana i nā hoʻonā hoʻolaha piha no nā makahiki he 10 a ʻoi, hoʻokahi mea e maopopo ai he kānana lowpass mana kiʻekiʻe me ka kānana harmonics 2 a me 3 i hoʻohana pinepine ʻia e hoʻohui a hoʻokaʻawale i nā hōʻailona lekiō uila mai nā mea hoʻouna lekiō FM he nui.

"ʻAʻole hiki ke ʻōlelo ʻo FMUSER ka mea hoʻolako lako lekiō maikaʻi loa ma ka honua, akā no kekahi o nā mea hoʻokele lekiō, ʻae, ʻo FMUSER kahi mea hoʻolako hilinaʻi a me ka mea hana o nā lako lekiō. "

- - - - - Peter, lālā kūpaʻa o FMUSER

▲ Ma hea e kūʻai ai i ka kānana FM Low Pass maikaʻi loa ▲

▲ Hoʻi i ka ʻIkepili ▲

No ke aha e pono ai nā kānana mana haʻahaʻa RF no ke kahua lekiō?

ʻO ka ʻĀpana Ma mua kahi e kūʻai ai i ka Kānana FM Low Pass maikaʻi loa | Hōʻalo

ʻO ka ʻĀpana aʻe Pehea e hana ʻia ai nā hoʻokuʻu Harmonic a me Spurious | Hōʻalo

He Mahele Pono o ka Lako Lekiō

Eia kekahi mau kumu e pono ai nā kānana haʻahaʻa haʻahaʻa RF no ka ʻoihana hoʻolaha lekiō.

ʻAʻole hiki ke ʻalo ʻia nā Harmonics a me nā hoʻokuʻu hoʻopunipuni, a e hoʻopilikia lākou i nā lekiō ma nā alapine lekiō like ʻole a hōʻemi i ka maikaʻi o nā papahana lekiō a ʻo ia ke kumu waiwai o kahi kānana coaxial low pass i ka lekiō.

Inā ʻaʻole ʻoe e hoʻohana i kahi kānana RF haʻahaʻa haʻahaʻa haʻahaʻa, e hoʻopaʻi ʻia paha ʻoe e ke keʻena hoʻokele lekiō kūloko (e like me FCC) no ka hoʻomohala ʻana i ka lekiō nui, no ka laʻana, nā helu o nā harmonics makemake ʻole a me nā hoʻoiho hoʻopunipuni i hana ʻia e kāu FM a Mea hoʻolele TV

Hoʻohana nā mea hoʻolele lekiō i nā kānana haʻahaʻa haʻahaʻa i ka mana kiʻekiʻe no ka pale ʻana i nā hoʻokuʻu harmonic e hoʻopilikia i nā kamaʻilio ʻē aʻe.

No ka hoʻopau ʻana i nā harmonics transmitter station FM: Hoʻopuka pinepine nā mea hoʻolele FM i nā harmonics - ka nui o ke alapine transmitter. Hoʻopilikia kekahi o lākou i ka VHF-tv a me ka UHF-tv hoʻokipa a me ka paging a me ka hoʻokipa lekiō kelepona. Ke hele nei kēia pūʻulu o nā kānana haʻahaʻa haʻahaʻa haʻahaʻa kiʻekiʻe i ka pūʻulu alapine FM holoʻokoʻa me ka haʻahaʻa haʻahaʻa a hāʻawi i ka nui o ka harmonic suppression.

E kūʻai i kāna kānana RF Harmonics mai FMUSER Broadcast

ʻO ka waiwai nui loa o ka kānana RF Harmonics ke kōkua i nā kikowaena lekiō e koho i nā hōʻailona e pono ai no ka hoʻohana ʻana. ʻOi loa no nā kikowaena lekiō nui, pehea e hāʻawi ai i ka poʻe hoʻolohe me nā papahana lekiō kiʻekiʻe loa me ka ʻole o ka hoʻopaʻi ʻia e ka hoʻokele lekiō kūloko ke kumu mua e hoʻonui ai i ka hoʻokūkū o nā hoa lekiō a hoʻomaikaʻi i ka ʻike ʻana i ka brand o nā kikowaena lekiō.

Hāʻawi ʻo FMUSER i nā kānana harmonic e like me ke kānana haʻahaʻa haʻahaʻa 20kW FM no nā pae mana transmitter a hiki i 20 kW. Hāʻawi kahi hoʻolālā kū hoʻokahi i ka hōʻole ʻana o 45 dB a ʻoi aku paha mai ka lua a i ka harmonic ʻumi a ma ʻō aku. Loaʻa kēia i nā kānana me nā lōʻihi holoʻokoʻa he 30% a 50% pōkole ma mua o nā kānana harmonic FM maʻamau.

Loaʻa iā mākou nā kānana RF maikaʻi loa no ke kūʻai aku, kūʻai i nā kānana RF e mana ana mai 500W a i 1000W mai FMUSER! ʻO ke kikoʻī, ʻo ia nā kānana haʻahaʻa haʻahaʻa 20kW FM no ke kūʻai aku (LPF) a me nā kānana haʻahaʻa haʻahaʻa 10kW VHF no ke kūʻai aku (LPF), kānana bandstop 10kW VHF no ke kūʻai aku (BSF), kānana bandpass kikohoʻe 350W UHF no ke kūʻai aku , a me kekahi o kā mākou lako kikowaena lekiō kūʻai kiʻekiʻe - nā kānana bandpass FM no ke kūʻai aku.

E loaʻa paha iā ʻoe nā mea āpau āu e pono ai inā e hoʻomau ʻoe i ka ʻimi ʻana, loaʻa iā mākou nā kānana bandpass FM e mana ana mai 500W a i 1kW, ʻo ia hoʻi, ʻo 500W, 1500W, 3000W, 5000W, 10000W FM bandpass kānana i hoʻolālā kūikawā ʻia no nā kikowaena lekiō FM. Eia kekahi, loaʻa ka hoʻopilikino ʻana no nā kānana harmonics, aia lākou āpau me ke kumukūʻai haʻahaʻa a me ke ʻano kupaianaha, e noi mai iā mākou no ke kākoʻo, hoʻolohe mākou a pau!

Ma ke ʻano he hoʻokahi o nā ʻaha hoʻolaha koʻikoʻi o nā kikowaena lekiō FM / TV, pono like ka kānana lua RF me ka mea hoʻohui FM / UHF / VHF, ka mea hoʻouna lekiō, ka antenna hoʻouna, a me nā lako kikowaena hoʻolaha like. ʻAʻole ia he hoʻonui ke ʻōlelo ʻana ma ke ʻano he huahana koʻikoʻi o nā huahana passive RF, ʻoi aku ka nui o nā kānana ma mua o nā ʻaha passive ʻē aʻe i nā repeaters a me nā kikowaena kumu.

Eia nō naʻe, ʻo ka kānana RF, no ka laʻana, ka kānana RF pass haʻahaʻa, he mea pono ia ma ka ʻaoʻao hoʻouna o ke kahua hoʻolaha e hoʻopau i nā harmonics i hana ʻia e ka transmitter. ʻO kēia ke kumu o ka hoʻohana ʻana o nā ʻōnaehana RF ma ka honua holoʻokoʻa i nā alapine like ʻole, no laila he nui nā hōʻailona pōʻino e nalu ana i ka lewa, ʻo kekahi o lākou no ke kīwī, pūʻali koa, nā mea ʻē aʻe no ka noiʻi ʻana i ka wā a me nā kumu ʻē aʻe.

▲ No ke aha e pono ai nā kānana RF no ke kahua lekiō ▲

▲ Hoʻi i ka ʻIkepili ▲

Pehea e loaʻa ai nā Harmonic Annoying and Spurious Emissions?

ʻO ka Māhele Ma mua ʻo ke kumu e pono ai nā kānana RF Low Pass | Hōʻalo

ʻO ka ʻĀpana aʻe ʻo ia ka kānana RF Harmonics maikaʻi loa no ke kūʻai aku | Hōʻalo

ʻO ka mea e hoʻopilikia ai i nā mea ʻenekini RF āpau ʻaʻole hiki ke pale ʻia nā hoʻokuʻu harmonic a me ka hoʻopunipuni. No nā mea hoʻolele lekiō, he mea nui e hoʻomaopopo i ke ʻano o nā harmonics a me nā hoʻokuʻu hoʻopunipuni, a pehea e hana ʻia ai a pehea e hōʻemi ai i ko lākou hopena.

Ma ka manawa like, pono nō hoʻi ka mālama ʻana i ka maikaʻi o nā papahana lekiō, ua wehewehe mai ka hui ʻenehana RF ʻoihana FMUSER iā mākou i kekahi ʻike theoretical e pili ana i nā harmonics a me nā hoʻokuʻu hoʻopunipuni.

Inā makemake ʻoe e hoʻomaopopo hou i ke kumu e pono ai nā lekiō i nā kānana RF ʻoihana, pono paha ʻoe i kēia mau ʻike

Pehea i hana ʻia ai nā Harmonics?

Ua kapa ʻia nā alapine i loaʻa i ka nui pololei o ka alapine hoʻokomo. I nā huaʻōlelo ʻē aʻe, ʻo nā harmonics ka mea i makemake ʻole ʻia, ʻo ia ka nui o ka pinepine o ka hoʻouna ʻana i manaʻo ʻia. Loaʻa kēia hoʻoili makemake ʻole ma kahi pae haʻahaʻa haʻahaʻa ma mua o ka hoʻouna ʻana i makemake ʻia.

E like me kā mākou e ʻike ai, aia kahi mea pono i nā lekiō, ʻo ia hoʻi, nā mea hoʻolele lekiō. Inā paha e hoʻolālā kūikawā ʻia ka transmitter 1kW a i ʻole 10kW, a ua hoʻolako ʻia ka ʻāpana RF kumu o ka transmitter me kahi kānana band-pass, akā kokoke i kēlā me kēia RF transmitter e hana i kekahi mau harmonics, ʻAʻole hiki i ka mea uila uila ʻoihana ke pale aku i nā clutter a me nā hewa. hoʻokuʻu

Manaʻo ʻia ʻo Harmonics ke kumu kumu o ka hoʻopili RF. ʻO kekahi mau ʻano nalu, e like me nā hawewe huinahā, nā nalu ʻili, a me nā nalu triangular, he nui ka ikehu ma ke alapine harmonic.

Pehea e hana ʻia ai ka Spurious Emission?

ʻAʻole like me nā harmonics, ʻaʻole e puka mai ka hoʻokuʻu hoʻopunipuni ke pāpālua ʻia ke alapine komo; ʻAʻole lākou i hoʻolaha me ka manaʻo. ʻO ka hoʻokuʻu hewa ʻana he hoʻokuʻu ulia pōpilikia, ʻike mau ʻia ʻo splash. ʻO ia ka hopena o ka intermodulation, interference electromagnetic, hoʻololi pinepine, a i ʻole harmonic.

▲ Pehea e hana ʻia ai nā hoʻokuʻu Harmonic hoʻonāukiuki a me nā Spurious ▲

▲ Hoʻi i ka ʻIkepili ▲

ʻO ke kānana mana haʻahaʻa RF maikaʻi loa no ke kūʻai aku

ʻO ka Māhele Ma mua Pehea e Hana ʻia ai nā Harmonics a me nā Hoʻokuʻu Spurious | Hōʻalo

ʻO ka ʻĀpana aʻe pehea e koho ai i ka kānana FM Harmonics maikaʻi loa | Hōʻalo

Pono ʻoe i kēia kānana RF Low Pass ma mua o ka manawa

Ua ʻike mākou a pau e hoʻohana ana nā mea hoʻoili lekiō i nā kānana RF haʻahaʻa e pale aku i nā harmonics a me nā hoʻokuʻu wahaheʻe e hoʻopilikia paha i nā kamaʻilio ʻē aʻe, ʻoiai ʻo ka hapa nui o nā mea hoʻoili FM e hoʻopuka i nā harmonics ma nā manawa he ʻumi o ke alapine kumu.

ʻO ka mea pōmaikaʻi, ʻo ka kānana haʻahaʻa haʻahaʻa FMUSER 20kW FM kekahi o nā ʻaha kānana ʻōnaehana RF maikaʻi loa no ka hui alapine hoʻolaha FM. I mea e kōkua ai i ka hoʻēmi ʻana i ka hopena i lawe ʻia mai e nā harmonics a me ka hoʻokuʻu spurious, ke hōʻike nei ʻo FMUSER i kekahi o kā mākou mau kānana harmonic haʻaheo - ʻo ka kānana haʻahaʻa haʻahaʻa RF 20kW no ke kahua lekiō FM.

Hoʻolālā ʻia ka kānana RF Low Pass no ka maikaʻi loa

Inā ʻaʻole ʻoe makemake i kēlā mau harmonics makemake ʻole e hāʻule i loko o ke alapine (frequency) i pili ʻole iā ʻoe a hoʻopilikia nui (hiki iā ʻoe ke loaʻa i kahi pūʻulu o nā leka hoʻopiʻi pilikia a hoʻopaʻi ʻia e kekahi mau keʻena hoʻoponopono), no ka laʻana, nā alapine (frequencies) o nā kahawai TV a i ʻole nā kikowaena lekiō ʻē aʻe. ʻO ka hoʻohana ʻana i ka kānana haʻahaʻa haʻahaʻa FMUSER 20kW RF ke ala maikaʻi loa e kōkua iā ʻoe e hoʻokuʻu iā ʻoe mai kēlā mau harmonics hoʻonāukiuki a me nā leka hoʻopiʻi pilikia.

Hiki ke kānana Harmonics

ʻO ka hiʻohiʻona nui o kēia kānana haʻahaʻa haʻahaʻa mana kiʻekiʻe ʻo ia kona hiki ke hoʻemi ʻia ke kani - e like me ka ʻikepili hoʻāʻo hilinaʻi o ka hui hoʻāʻo a FMUSER, ua hōʻea ka lua o ka attenuation harmonic a me ke kiʻekiʻe o ka attenuation harmonic o kēia kānana RF haʻahaʻa 20kW i kēlā me kēia ≥ 35 dB a me ≥ 60 dB, he mana kānana harmonics ikaika loa ia no ke kahua lekiō.

Hoʻokomo Haʻahaʻa Haʻahaʻa Loa

ʻO ka pohō hoʻokomo haʻahaʻa o ka kānana haʻahaʻa haʻahaʻa 20kW FM a FMUSER e kūpono ia no nā pae mana a hiki i 20000 watts, ʻo ia hoʻi me kēia kānana RF kupaianaha, hiki iā ʻoe ke hoʻohui me ka hoʻohana ʻana i nā ʻano mea hoʻoili lekiō like ʻole me nā mana like ʻole ma ke kahua lekiō, a hiki i ka poʻe hoʻolohe ke loaʻa nā papahana lekiō me ke kūlana kiʻekiʻe loa a me nā harmonics haʻahaʻa loa! Mea hoʻohui: 3 1 / 8 "mana hoʻokomo kiʻekiʻe loa 20kw

ʻIke Mea hoʻohana maikaʻi loa

ʻO nā kānana Low Pass 20kW no ke kūʻai aku, i kūkulu ʻia me kahi ʻōnaehana hoʻohui maʻalahi, ua kūkulu kūikawā ʻia no ke kahua lekiō FM. Ke noʻonoʻo nei i ka ʻike mea hoʻohana maikaʻi loa , hiki i ka ʻōnaehana kānana ke hoʻohui maʻalahi i nā mea hoʻoili FM.

Hāʻawi ʻo FMUSER i kahi laina piha o nā kānana FM a me UHF / VHF no ka hoʻopau ʻana i nā harmonics ma nā kikowaena hoʻolaha lekiō.

Ma ke ao holoʻokoʻa, makemake mākou e kōkua i nā mea hoʻokele lekiō mai nā wahi a puni o ka honua e hoʻokaʻawale i nā mea hoʻoili FM kokoke loa, ʻike mākou ua hōʻike kekahi o lākou i ka hoihoi nui i ka hoʻohui ʻana i nā alapine FM he nui ma kahi antenna haku hoʻokahi, makemake kekahi e loaʻa nā noi maʻamau no kā lākou mau mea hoʻoili he nui i kā lākou mau kikowaena. ʻO ka kānana haʻahaʻa haʻahaʻa 20kW FM , no ka laʻana, ʻo ia kekahi o kā mākou mau kānana harmonics FM kūʻai maikaʻi loa i hoʻohana ʻia no ka hoʻohui ʻana i nā mea hoʻoili lekiō FM i ka mana a hiki i ka 20kW, e ʻike paha ʻoe i kēia kanaka nui ma kekahi mau kikowaena lekiō FM nui.

KE HOʻOLOHE MAU NEI MĀKOU I KOU MAU PONO inā makemake ʻoe i kekahi o kā mākou mau kānana harmonics RF kūʻai nui loa.

Manaʻo ʻoe makemake ʻoi aku ma mua o ka mea āu e ʻike ai

E like me kā mākou i ʻōlelo ai ma luna, ʻo mākou kekahi o nā mea hana lako lekiō maikaʻi loa ma ka honua holoʻokoʻa, ma waho aʻe o ka kānana RF haʻahaʻa 20kW , hiki iā ʻoe ke hālāwai me nā kānana RF kūʻai kiʻekiʻe ʻē aʻe ma ka ʻike ma lalo nei. ʻAe, maikaʻi ke ʻano a me ke kumukūʻai haʻahaʻa e like me nā manawa a pau.

Palapala A. FM/VHF LPF Kānana Holo Haʻahaʻa no ke kūʻai aku

ʻO ka mea aʻe he 10kW VHF Bandreject Filter VHF BSF Bandstop Filter no ke kūʻai aku | Hōʻalo

Maluna	kükohu	Max. Ka mana komo	ʻO VSWR	Pae alapine (frequency )	Hoʻoikaika	2nd harmonic	3rd d harmonic	nā mea hoʻopili	E kipa no ka mea hou aku
FM	A	20 kW	≤ 1.1	87 - 108 MHz		≥ 35 dB	≥ 60 dB	3 1/8"	More
VHF	B	10 kW	≤ 1.1	167 - 223 MHz		≥ 35 dB	≥ 60 dB	3 1/8"	More

Pakuhi B. Kānana Bandreject 10kW VHF BSF Bandstop no ke kūʻai aku

ʻO ka mea ma mua ʻo FM/VHF LPF Low Pass Filter no ke kūʻai aku | Hōʻalo

ʻO ka mea aʻe he 350W UHF DTV BPF Bandpass Filter no ke kūʻai aku | Hōʻalo

Maluna	kükohu	Max. Ka mana komo	ʻO VSWR	fv	f0±4MHz	'O ka pinepine huahelu	Hoʻoikaika	fv-4.43±0.2MHz	nā mea hoʻopili	E kipa no ka mea hou aku
VHF	A	10 kW	ʻO VSWR	≤ 1.1	≤ 1.1	167 - 223 MHz	Hoʻoikaika	≥ 2 0 dB	3 1 / 8 "	More

Palapala C. 350W UHF DTV BPF Bandpass kānana no ke kūʻai aku

ʻO ka mea ma mua he 10kW VHF BSF Bandstop Bandreject Filter no ke kūʻai aku | Hōʻalo

ʻO ka mea aʻe ʻo FM BPF Bandpass Filter no ke kūʻai aku | Hōʻalo

Maluna

kükohu

Max. Ka mana komo

Nā Cavities

ʻO VSWR

hookomo Loss

f0±3.8MHz

f0±4.2MHz

f0±6MHz

f0±12MHz

E kipa no ka mea hou aku

UHF

350W

≤ 1.15

474 MHz

≤ 0.50 dB

≤ 1.3 dB

≥ 8 dB

≥ 20 dB

≥ 40 dB

858 MHz

≤ 0.60 dB

≤ 1.65 dB

≥ 8 dB

≥ 20 dB

≥ 40 dB

Palapala D. FM BPF Bandpass kānana no ke kūʻai aku

ʻO ka mea ma mua he 350W UHF DTV BPF Bandpass Filter no ke kūʻai aku | Hōʻalo

ʻO ka mea aʻe ʻo VHF BPF Bandpass Filter no ke kūʻai aku | Hōʻalo

Maluna

kükohu

Max. Ka mana komo

Nā Cavities

ʻO VSWR

Pae alapine (frequency )

hookomo Loss

f0±300kHz

f0±2MHz

f0±4MHz

nā mea hoʻopili

E kipa no ka mea hou aku

500W

≤ 1.1

87 - 108 MHz

≤ 0.70 dB

≤ 0.75 dB

25 dB

40 dB

7-16 DIN

500W

≤ 1.1

87 - 108 MHz

≤ 1.10 dB

≤ 1.20 dB

40 dB

60 dB

7-16 DIN

1500W

1.5kW

≤ 1.1

87 - 108 MHz

hookomo Loss

≤ 0.30 dB

≤ 0.35 dB

25 dB

40 dB

7-16 DIN

1500W

1.5kW

≤ 1.1

87 - 108 MHz

≤ 0.50 dB

≤ 0.60 dB

40 dB

60 dB

7-16 DIN

3000W

3kW

≤ 1.1

87 - 108 MHz

hookomo Loss

≤ 0.25 dB

≤ 0.30 dB

25 dB

40 dB

1 5 / 8 "

3000W

3kW

≤ 1.1

87 - 108 MHz

≤ 0.40 dB

≤ 0.45 dB

≥ 40 dB

60 dB

1 5 / 8 "

5000W

5kW

≤ 1.1

87 - 108 MHz

hookomo Loss

≤ 0.20 dB

≤ 0.25 dB

≥ 25 dB

40 dB

1 5 / 8 "

5000W

5kW

≤ 1.1

87 - 108 MHz

≤ 0.35 dB

≤ 0.40 dB

40 dB

60 dB

1 5 / 8 "

10000W

10kW

≤ 1.1

87 - 108 MHz

hookomo Loss

≤ 0.15 dB

25 dB

40 dB

3 1 / 8 "

10000W

10kW

≤ 1.1

87 - 108 MHz

≤ 0.25 dB

≤ 0.30 dB

≥ 40 dB

60 dB

3 1 / 8 "

Pakuhi E. Kānana Bandpass VHF BPF no ke kūʻai aku

ʻO ka mea ma mua ʻo FM BPF Bandpass Filter no ke kūʻai aku | Hōʻalo

Hoʻi i ka Kānana Haʻahaʻa FM/VHF LPF no ke kūʻai aku | Hōʻalo

Maluna

kükohu

Max. Ka mana komo

Nā Cavities

ʻO VSWR

Pae alapine (frequency )

hookomo Loss

f0±300kHz

f0±2MHz

f0±4MHz

nā mea hoʻopili

E kipa no ka mea hou aku

VHF

500W

≤ 1.1

167 - 223MHz

≤ 0.40 dB

≤ 0.50 dB

20 dB

35 dB

7-16 DIN

VHF

500W

≤ 1.1

167 - 223MHz

≤ 0.80 dB

≤ 1.00 dB

50 dB

70 dB

7-16 DIN

VHF

1500W

1.5kW

≤ 1.1

167 - 223MHz

hookomo Loss

≤ 0.15 dB

≤ 0.20 dB

20 dB

35 dB

1 5 / 8 "

VHF

1500W

1.5kW

≤ 1.1

167 - 223MHz

≤ 0.25 dB

≤ 0.30 dB

50 dB

70 dB

1 5 / 8 "

VHF

3000W

3kW

≤ 1.1

167 - 223MHz

hookomo Loss

≤ 0.10 dB

≤ 0.15 dB

10 dB

20 dB

1 5 / 8 "

VHF

3000W

3kW

≤ 1.1

167 - 223MHz

≤ 0.20 dB

≤ 0.25 dB

20 dB

35 dB

1 5 / 8 "

VHF

5000W

5kW

≤ 1.1

167 - 223MHz

hookomo Loss

≤ 0.10 dB

10 dB

20 dB

1 5 / 8 "

VHF

5000W

5kW

≤ 1.1

167 - 223MHz

≤ 0.15 dB

≤ 0.20 dB

20 dB

35 dB

1 5 / 8 "

VHF

10000W

5kW

≤ 1.1

167 - 223MHz

hookomo Loss

≤ 0.10 dB

10 dB

20 dB

3 1 / 8 "

VHF

10000W

5kW

≤ 1.1

167 - 223MHz

≤ 0.15 dB

≤ 0.20 dB

20 dB

35 dB

3 1 / 8 "

Kūʻai iā RF Harmonics Filter no ka Radio Station? Eia ka Wahi Pono!

ʻO FMUSER kekahi o nā mea hana kānana RF maikaʻi loa e hana ana i ka Filter harmonics no ke kūʻai aku ma kahi kokoke i 200+ mau ʻāina a me nā ʻāpana a puni ka honua, eia nā ʻāina i manaʻo ʻia mai kahi āu e hana ai i ka kuhikuhi.

Afghanistan, Albania, Algeria, Andorra, Angola, Antigua and Barbuda, Argentina, Armenia, Australia, Austria, Azerbaijan, The Bahamas, Bahrain, Bangladesh, Barbados, Belarus, Belgium, Belize, Benin, Bhutan, Bolivia, Bosnia and Herzegovina, Botswana , Palakila, Brunei, Bulgaria, Burkina Faso, Burundi, Cabo Verde, Cambodia, Cameroon, Canada, Central African Republic, Chad, Chile, Kina, Colombia, Comoros, Congo, Democratic Republic of the, Congo, Republic of the, Costa Rica , Côte d'Ivoire, Croatia, Cuba, Cyprus, Czech Republic, Denmark, Djibouti, Dominica, Dominican Republic, East Timor (Timor-Leste), Ecuador, Egypt, El Salvador, Equatorial Guinea, Eritrea, Estonia, Eswatini, Ethiopia, Fiji, Finland, Palani, Gabon, Gambia, Georgia, Kelemānia, Ghana, Helene, Grenada, Guatemala, Guinea, Guinea-Bissau, Guiana, Haiti, Honduras, Hungari, Iceland, India, Indonesia, Iran, Iraq, Ireland, Israel , Italia, Jamaica, Iapana, Ioredane, Kazakhstan, Kenya, Kiribati, Korea, ʻĀkau, Korea, Hema, Kosovo, Kuwait,Kyrgyzstan, Laos, LATVia, Lebanona, Lesotho, Liberia, Libia, Liechtenstein, Lithuania, Luxembourg, Madagaskar, Malawi, Malaysia, Maldives, Mali, Malta, Marshall Islands, Mauritania, Mauritius, Mekiko, Micronesia, Federated States of, Moldova, Monaco , Mongolia, Montenegro, Morocco, Mozambique, Myanmar (Burma), Namibia, Nauru, Nepal, Netherlands, New Zealand, Nicaragua, Niger, Nigeria, North Macedonia, Norway, Oman, Pakistan, Palau, Panama, Papua New Guinea, Paraguay, Peru, Philippines, Polani, Pokukala, Qatar, Romania, Rusia, Rwanda, Saint Kitts a me Nevis, Saint Lucia, Saint Vincent and the Grenadines, Samoa, San Marino, Sao Tome and Principe, Saudi Arabia, Senegal, Serbia, Seychelles, Sierra Leone, Singapore, Slovakia, Slovenia, Solomon Islands, Somalia, South Africa, Spain, Sri Lanka, Sudan, Sudan, South, Suriname, Sweden, Switzerland, Syria, Taiwan, Tajikistan, Tanzania, Thailand, Togo, Tonga, Trinidad and Tobago , Tunisia, Tureke, Turkmenistan, Tuvalu, Uganda, Ukraine, United Arab E mirates, United Kingdom, United States, Uruguay, Uzbekistan, Vanuatu, Vatican City, Venezuela, Vietnam, Yemen, Zambia, Zimbabwe

Aia mākou ma ʻaneʻi no kou makemake

Ke noʻonoʻo nei ʻoe i ke kumukūʻai o ke kānana harmonics RF ? Hoʻolālā a hana mākou i nā kānana harmonics haʻahaʻa a kūpono hoʻi no nā kikowaena lekiō , mai nā kānana pass haʻahaʻa LPF a i nā kānana bandstop a me nā kānana bandpass FM / UHF / VHF, a pēlā aku.

E hoʻopiha i ka pepa "Hoʻokaʻaʻike mai iā mākou" ma ka hema a e haʻi mai iā mākou i kāu mau kikoʻī e pono ai , e pane koke mai kekahi o kā mākou poʻe kūʻai aku akamai a kōkua i ke koho ʻana i kahi kānana harmonics FM/TV e kūpono i kāu pono, ʻoi aku hoʻi no nā nīnau e like me ke kānana haʻahaʻa haʻahaʻa kiʻekiʻe no ke kūʻai aku, ka hoʻopilikino ʻana o ke kānana bandpass, ka hopena turnkey kānana piha, a pēlā aku. ʻĀ, ʻo nā nīnau maʻamau e like me ke kumukūʻai, ka manawa hāʻawi, a i ʻole nā kikoʻī he manuahi nō hoʻi ke nīnau. E ʻōlelo i kāu mea e pono ai, KE HOʻOLOHE MAU NEI MĀKOU.

▲ Kānana Harmonics RF maikaʻi loa no ke kūʻai aku ▲

▲ Hoʻi i ka ʻIkepili ▲

Pehea e koho ai i ka kānana FM Harmonics maikaʻi loa no ka Radio Station?

ʻO ka ʻĀpana Ma mua ʻo ia ka kānana RF Harmonics maikaʻi loa no ke kūʻai aku | Hōʻalo

ʻO ka ʻĀpana aʻe he mau ʻoiaʻiʻo hoihoi a me nā nīnau a me nā pane e pili ana i nā kānana RF | Hōʻalo

Loaʻa i kekahi o kā mākou mea kūʻai aku nā kānalua e like me, ʻaʻole maopopo iaʻu pehea e koho ai i ke ʻano kūpono o ka kānana harmonics RF , a makemake paha au i ʻelua ʻano kānana harmonics akā he 50K$ wale nō kaʻu no ke kūʻai ʻana, a pēlā aku.

Wahi a ka noiʻi kūʻai aku piha ʻana o nā kānana harmonics FMUSER , ua ʻike mākou he mau hiʻohiʻona like nā kānana harmonic RF kūʻai kiʻekiʻe :

1. Hoʻopilikino like ʻole kānana a me OEM Welcome

ʻO ka hana maʻamau a me ka hoʻolālā ʻana o ka kānana e hōʻike i ka hoʻomohala ʻana o ka mea hana mea hoʻolaha hoʻolaha a me ka hoʻokō pono o nā mea hoʻolaha. Pono ka kānana RF harmonics maikaʻi loa i nā ʻano o ke kumukūʻai kālā, ke ola lawelawe lōʻihi. ʻO FMUSER 20kW FM nā kānana haʻahaʻa haʻahaʻa haʻahaʻa e maʻalahi i ka hoʻohana ʻana a me ke kumu kūʻai no nā mea hoʻokele lekiō.

2. Loaʻa i ka liʻiliʻi loa 1 PCS Design and Custom Service

Hāʻawi ʻia ka lawelawe hoʻolālā a me ka hana no ka liʻiliʻi loa o 1 pcs kānana. No ka mea, pono nā mea lekiō like ʻole e kū pono i nā pono maoli o nā lekiō like ʻole, inā paha hiki i ka mea hoʻolako kānana RF ke hana manuahi a ua lilo nā kānana hoʻolālā i hoʻokahi o nā kūlana e hoʻāʻo ai i ka hiki ke hoʻolako i nā mea hoʻolako kānana. No ke aha ke kū nei ʻo FMUSER mai nā mea hoʻolako kānana he nui no ka mea maʻamau kā lākou kānana RF, hana kiʻekiʻe, kumukūʻai kālā, a maʻalahi hoʻi e hoʻohana. No ka nui o nā kānana kiʻekiʻe āu e makemake ai e hoʻopilikino, hiki iā FMUSER ke lawelawe mau iā ʻoe

3. RF Harmonics Filter Buy Guideline mai FMUSER

Pehea e koho ai i nā kānana harmonics RF kiʻekiʻe ma waena o nā mea hoʻolako lako lekiō i ka makahiki 2021 ua lilo ia i pilikia koi i nā mea kūʻai aku FMUSER hou a me nā mea kūʻai aku kahiko.

Ma hope o ke aʻo ʻana i kā mākou hui loea, ua ʻike mākou hiki i kekahi mau ʻāpana ʻoihana ke kōkua iā ʻoe e koho, komo pū mākou i nā pāʻani, hoʻolaʻa e hāʻawi i kā mākou kānana harmonics maikaʻi loa no ʻoe, no laila, inā makemake ʻoe i nā kānana harmonic RF no ke kūʻai aku a i ʻole makemake i kekahi ʻike e pili ana i ke kumukūʻai kānana harmonic hou loa mai FMUSER, e ʻoluʻolu e ʻike ʻoe KE HOʻOLOHE MAU NEI MĀKOU!

ʻO ka Pim haʻahaʻa e ʻoi aku ka ikaika o nā hōʻailona

No ka laʻana, PIM (AKA: Passive Intermodulation), ʻike mākou ʻo ka PIM ka hopena o nā hōʻailona pono ʻole i hana ʻia e ka hui ʻana o ʻelua a ʻoi aʻe paha nā alapine i nā mīkini passive nonlinear. ʻO kēia mau hōʻailona hou e hoʻopilikia a hoʻololi i nā hōʻailona kumu i hoʻouna ʻia ma waena o nā ʻōnaehana uila ʻelua. Hiki iā ia ke hoʻoulu i ka hōʻailona hōʻailona ma kekahi ʻōnaehana uila. ʻO ka PIM haʻahaʻa ka loaʻa ʻana o kahi hōʻailona ikaika me ka bandwidth hou aku no nā mea hoʻohana hou aku, ʻo ia hoʻi ka ʻoluʻolu o ka mea kūʻai aku a me ka loaʻa kālā kiʻekiʻe no nā mea hana.

Pono ʻoe i nā poho hoʻokomo haʻahaʻa a me nā poho hoʻihoʻi

He mea koʻikoʻi ka lilo o ka hoʻokomo ʻana a me ka hoʻihoʻi ʻana i ka hoʻolālā a me ka hoʻomohala ʻana i nā mea hana kiʻekiʻe e like me nā kānana RF, nā mea hoʻokaʻawale mana RF, a me nā mea hoʻonui RF. He hanana kūlohelohe ia i loaʻa i nā ʻano hoʻoili āpau (ka hoʻouna ʻikepili a i ʻole ka lawe uila). No ka mea he ʻoiaʻiʻo kēia no nā laina hoʻouna kino a i ʻole nā ala conductive, ʻoi aku ka lōʻihi o ke ala, ʻoi aku ka kiʻekiʻe o ka poho. Eia kekahi, e hana ʻia kēia mau poho ma kēlā me kēia wahi pili ma ka laina, me nā hui a me nā mea hoʻohui. No ka hui kiʻekiʻe e like me nā kānana RF, ʻo kēlā mau kānana me ka liʻiliʻi o ka hoʻokomo ʻana a me nā wahi kūʻai maikaʻi ʻē aʻe hiki ke lilo i mea koho mua no nā mea lekiō.

Ua ʻoi aku ma mua o ka mea āu e ʻike ai

ʻIke ʻia, aia nā ʻōlelo koʻikoʻi ma mua o ka Insertion loss, nā ʻāpana ʻē aʻe e like me ka waiwai hoʻopili a me ka hoʻokele mana kiʻekiʻe, etc. Inā makemake ʻoe i ʻike hou aʻe e pili ana i nā kānana RF harmonics, e ʻoluʻolu e hoʻokaʻaʻike i kā mākou hui ʻenehana, ʻo lākou ʻo 7/24 pūnaewele e kali nei i kāu nūhou maikaʻi. Eia ka manaʻo o ka hui ʻenehana FMSUER:

Hoʻemi i ka nui kānana me ka hoʻokūkū kumukūʻai ʻO ka huahana kūpono no kahi ākea ākea o ke alapine microwave, e like me ka ʻōnaehana Telecommunication, IEEE 802.
ʻO ke kūpaʻa wela maikaʻi loa
Ka mana kiʻekiʻe a me ka waiwai attenuation maikaʻi loa
Etc.

No ka hoopau ana i ka FM Station Transmitter Harmonics: Hoʻopuka pinepine nā mea hoʻolele FM i nā harmonics - ka nui o ke alapine transmitter. Hoʻopilikia kekahi o kēia mau mea i ka VHF-TV a me ka UHF-TV hoʻokipa a me ka ʻaoʻao a me ka hoʻokipa lekiō kelepona. ʻO kēia pūʻulu o nā kānana haʻahaʻa haʻahaʻa e hele i ka pūʻulu FM holoʻokoʻa me ka haʻahaʻa haʻahaʻa a hāʻawi i ka hoʻopau harmonic nui.

▲ Pehea e koho ai i ke kānana FM Harmonics maikaʻi loa ▲

▲ Hoʻi i ka ʻIkepili ▲

Nā mea hoihoi a me ka Q&A e pili ana i nā kānana RF

ʻO ka ʻĀpana Ma mua Pehea e koho ai i ke kānana FM Harmonics maikaʻi loa | Hōʻalo

Hoʻi i ka Māhele Mua Ma hea e kūʻai ai i ka Kānana FM Low Pass Maikaʻi Loa | Hōʻalo

Inā makemake ʻoe e ʻike hou aʻe e pili ana i ka hoʻolālā kaapuni a i ʻole ka māhele kūʻai aku o ka kānana RF, ʻōlelo ʻo FMUSER iā ʻoe e aʻo e pili ana i ka uila passive a i ʻole e nīnau pololei i kā mākou hui kūʻai aku, no ka mea, ʻaʻole lawa ka ʻike āu i heluhelu ai e wehewehe pono i ka kānana RF iā ʻoe. (PS: ʻAʻole hiki iā Wikipedia ke hana). No laila, ʻo nā mea a pau e hiki iā mākou ke hana iā ʻoe, ʻo ia ka wehewehe maʻalahi a me ka maopopo i ke ʻano a me nā ʻano o nā kānana RF, a pehea e hana ai nā kānana RF. Eia, papa inoa ʻo FMUSER i kekahi mau nīnau hoihoi e pili ana i nā kānana RF i hāpai ʻia e kā mākou mea kūʻai lekiō, a ʻo kā mākou pane. E ʻoluʻolu e hoʻomau i ka heluhelu Inā makemake ʻoe e ʻike hou aku e pili ana i nā kānana RF.

Q1: Pehea e hana ai nā kānana RF i nā ala ʻē aʻe koe wale nō ma FM/TV Station?

ʻO nā kānana RF he mea nui i ka ʻenehana uila, hoʻohana ʻia nā kānana RF me nā mea hoʻokipa lekiō i hiki ke hoʻokipa ʻia nā ʻano alapine kūpono wale nō ke kānana ʻana i nā ʻāpana ʻē aʻe i makemake ʻole ʻia. Hoʻolālā ʻia nā kānana RF i kahi ala e hiki ai iā lākou ke hana maʻalahi ma nā pae alapine mai ka waena a i ke alapine kiʻekiʻe loa, ʻo ia hoʻi megahertz a me gigahertz. Ma muli o kāna ʻano hana, hoʻohana pinepine ʻia i nā mea hana e like me ka lekiō hoʻolaha, ke kelepona uila, a me ke kīwī, etc.

Hiki i nā kānana RF ke kānana i ka walaʻau a hōʻemi paha i ka hoʻopili ʻana o nā hōʻailona o waho e hiki ke hoʻopilikia i ka maikaʻi a i ʻole ka hana o kekahi ʻōnaehana kamaʻilio. ʻO ka nele o nā kānana RF kūpono i kahi e hiki ke hoʻopau i ka hoʻololi ʻana o nā alapine hōʻailona e hiki ai ke hōʻeha i ke kaʻina kamaʻilio.

Me nā kānana RF kūpono i kahi, hiki ke hoʻopaʻa maʻalahi ʻia nā pilikia o waho me ka hōʻailona hōʻailona i hana ʻia e ka ʻōnaehana kamaʻilio kokoke. Mālama kēia i ka maikaʻi o nā alapine hōʻailona makemake ʻoiai ke kānana ʻana i nā alapine hōʻailona makemake ʻole me ka maʻalahi.

Ma muli o kēia, he kuleana koʻikoʻi nā kānana RF i ka ʻōnaehana kamaʻilio uea, ʻo ia hoʻi ka satellite, radar, ka ʻōnaehana kelepona kelepona, a me nā mea hou aku.

ʻO ka maʻamau, māmā nā kānana a hiki ke kōkua i ka hoʻonui ʻana i ka hana o nā alapine o ka hōʻailona. Inā ʻaʻole hiki i nā kānana RF ke hāʻawi i ka hana i manaʻo ʻia, a laila hiki iā ʻoe ke ʻimi i nā koho ʻē aʻe, ʻo ia ka hoʻohui ʻana o kahi amplifier i kāu hoʻolālā. Mai ka Trellisware amplifier a hiki i nā mea hoʻonui mana RF ʻē aʻe, hiki iā ʻoe ke hoʻololi i nā alapine hōʻailona haʻahaʻa i nā mea kiʻekiʻe; no laila e hoʻonui ai i ka hana holoʻokoʻa o nā hoʻolālā RF.

Eia kekahi, hana koʻikoʻi nā kānana RF i ke kaiapuni kelepona pū kekahi. I ka hiki ʻana mai i nā kelepona paʻa, koi lākou i kekahi mau pūʻulu e hana pono. Me ka nele i ka kānana RF kūpono, ʻaʻole e ʻae ʻia nā hui like ʻole e noho like i ka manawa like ʻo ia hoʻi e hōʻole ʻia kekahi mau pūʻulu, ʻo ia hoʻi, Global Navigation Satellite System (GNSS), palekana lehulehu, Wi-Fi, a me nā mea hou aku. Ma ʻaneʻi, he kuleana koʻikoʻi nā kānana RF ma ka ʻae ʻana i nā pūʻulu āpau e noho pū i ka manawa like.

Mahalo i ka hoʻomohala ʻana o R&D makua o FMUSER, uhi mākou i nā kānana like ʻole no ʻoe, e ʻoluʻolu e hoʻokaʻaʻike aku i kā mākou hui kūʻai aku inā ʻaʻole ʻoe maopopo i nā mea maikaʻi loa no kāu kikowaena hoʻolaha, e kali ana kā mākou hui kūʻai aku a me ka ʻenehana me nā pepeiao āpau.

Q2: Pehea ʻoe e hana ai i kahi kānana RF?

Ma keʻano laulā, hana ʻia nā kānana RF me nā resonator i hui pū ʻia a hoʻolālā ʻia me nā ʻāpana reactive passive e like me nā capacitors, inductors, a me (emi pinepine) RF transformers, i hui pū ʻia nā inductors. He laina laina maʻamau nā kānana, a inā makemake ʻia kekahi ʻano hoʻonui hiki ke hoʻohui ʻia me nā mea hoʻonui RF i hoʻokō ʻia me nā transistors RF (a i ʻole bipolar a i ʻole field-effect). Pono nā kānana i ka wā e kānana ai i nā hōʻailona makemake ʻole mai ke komo ʻana i ka spectrum radio. Hoʻohana ʻia lākou me nā mea uila like ʻole. Eia nō naʻe, hiki mai kāna hoʻohana nui ʻana i loko o ka domain frequency radio.

No ka kānana ala haʻahaʻa, ʻo kāna kaapuni e ʻae i nā ʻāpana alapine haʻahaʻa wale nō a hoʻopaʻa i nā ʻāpana alapine ʻē aʻe a pau i kapa ʻia he kānana ala haʻahaʻa. ʻO ka inoa LPF ponoʻī e hōʻike i ke alapine haʻahaʻa.

Ma muli o ka noi a me ka nui o nā lako uila, nui nā ʻano kānana, ʻo ia hoʻi nā kānana cavity, nā kānana planar, nā kānana electroacoustic, nā kānana dielectric, nā kānana coaxial (ʻaʻole pili i ke kaula coaxial), a me nā mea hou aku.

He mea hana ʻoihana ʻo FMUSER o nā kānana harmonics RF . Loaʻa iā mākou ka waihona ʻike lako hoʻolaha ʻoihana loa a me ka hui loea. Inā he mau nīnau kāu e pili ana i nā kānana RF i ka wā e heluhelu ana i kēia kaʻana like, e ʻoluʻolu e nīnau i kā mākou hui loea no ke kākoʻo.

Q3: Ehia mau ʻano o ka kānana RF i laila a he aha lākou?

ʻO nā kānana Radio Frequency kahi ʻano kaapuni kūikawā e hiki ai i nā hōʻailona kūpono ke hele i ka wā e kāpae ai lākou i nā hōʻailona makemake ʻole. I ka hiki ʻana i ka topology kānana, ʻehā mau ʻano kānana RF kumu, ʻo ia hoʻi; kiʻekiʻe-pass; band-pass; a me ka band-reject (a i ʻole nā kānana notch). ʻO nā kānana RF maʻamau he ʻano alapiʻi, a ʻo ka "kūlana" o nā ʻāpana (inductors a me capacitors) ka mea e wehewehe ai i ko lākou ʻano; ʻO nā waiwai o nā ʻāpana e wehewehe i ka laulā o ka alapine (es) hōʻailona a lākou e ālai ai a ʻaʻole paha.

Kānana Ala Haʻahaʻa - kānana Lowpass - LPF

ʻO ka kānana haʻahaʻa haʻahaʻa ka mea e ʻae wale i nā alapine haʻahaʻa e hele i ka manawa like, e hoʻemi ana i kēlā me kēia alapine hōʻailona ʻē aʻe. Hoʻoholo ʻia ka nui o ka emi ʻana o ke alapine o ka hōʻailona i ka wā e hele ai i ka bandpass e nā mea he nui e like me ka topology kānana, ka hoʻonohonoho ʻana, a me ka maikaʻi o nā ʻāpana, a me nā mea ʻē aʻe. passband i mea e loaʻa ai kona hōʻole hope loa.

LPF

Hiki mai nā kānana ha'aha'a ma nā 'ano like 'ole. ʻO ka noi nui o kēia kānana ka hoʻopau ʻana i nā harmonics o ka RF amplifier. He mea koʻikoʻi kēia hiʻohiʻona no ka mea kōkua ia i ka pale ʻana i nā mea i makemake ʻole ʻia i ka wā e pili ana i nā pūna hoʻouna like ʻole. ʻO ka mea nui, hoʻohana ʻia nā kānana haʻahaʻa haʻahaʻa i nā noi leo a kānana i nā leo mai nā kaapuni waho. Ma hope o ka kānana ʻana i nā hōʻailona alapine kiʻekiʻe, loaʻa i nā alapine hōʻailona hopena i kahi maikaʻi a maopopo.

Kānana Holo Kiʻekiʻe - Kānā Kiʻekiʻe - HPF

E kū'ē i ka kānana ala haʻahaʻa, hiki i ka kānana ala kiʻekiʻe (HPF) ke ʻae wale i ka hōʻailona alapine kiʻekiʻe e hele i loko. ʻO ka ʻoiaʻiʻo, ua hoʻokō ʻia nā kānana kiʻekiʻe i nā kānana ala haʻahaʻa no ka mea hiki ke hoʻohana ʻia ia mau mea ʻelua i hui pū ʻia e hana i kahi kānana bandpass. ʻO ka hoʻolālā o ka kānana hele kiʻekiʻe he pololei a hoʻemi i nā alapine i lalo o kahi paepae.

HPF

ʻO ka maʻamau, hoʻohana ʻia nā kānana kiʻekiʻe i nā ʻōnaehana leo kahi e kānana ʻia ai nā alapine haʻahaʻa. Eia kekahi, hoʻohana ʻia ia e wehe i ka bass ma nā ʻōlelo liʻiliʻi, a i nā manawa he nui; ʻO kēia mau kānana i kūkulu ponoʻia i loko o nā mea'ōlelo. Eia nō naʻe, inā pili ia i kekahi papahana DIY, hiki ke maʻalahi nā kānana kiʻekiʻe i ka ʻōnaehana.

Kānana Band Pass - kānana Bandpass - BPF

ʻO kahi kānana bandpass (BPF) kahi kaapuni e hiki ai i nā hōʻailona mai ʻelua mau alapine like ʻole ke hele a hoʻemi i nā hōʻailona ʻaʻole i komo i loko o kāna pae ʻae. ʻO ka hapa nui o nā kānana bandpass e hilinaʻi ʻia i kekahi kumu mana waho a hoʻohana i nā mea hana, ʻo ia hoʻi nā kaapuni i hoʻohui ʻia a me nā transistors. Kapa ʻia kēlā ʻano kānana he kānana bandpass hana. Ma ka ʻaoʻao ʻē aʻe, ʻaʻole hoʻohana kekahi mau kānana band pass i kahi kumu mana waho a hilinaʻi nui i nā ʻāpana passive, ʻo ia hoʻi nā inductors a me nā capacitors. ʻIke ʻia kēia mau kānana he mau kānana passive bandpass.

Hoʻohana pinepine ʻia nā kānana band pass i nā mea hoʻokipa kelepona a me nā mea hoʻouna. ʻO kāna hana nui i ka transmitter ka palena ʻana i ka bandwidth o ka hōʻailona hoʻopuka i ka liʻiliʻi loa i hiki ke lawe ʻia ka ʻikepili pono i ka wikiwiki a me ke ʻano. I ka hiki ʻana mai i ka mea hoʻokipa, ʻae ka kānana band pass i ka nui o nā alapine i makemake ʻia e decode a lohe ʻia, ʻoiai e ʻoki ana i nā hōʻailona ʻē aʻe e hele mai ana mai nā alapine makemake ʻole.

ʻO BPF

ʻO nā mea āpau, ke hoʻolālā maikaʻi ʻia kahi kānana bandpass, hiki iā ia ke hoʻonui maʻalahi i ka maikaʻi o nā hōʻailona, ʻoiai i ka manawa like, hiki iā ia ke hōʻemi i ka hoʻokūkū a i ʻole ke keakea ʻana i waena o nā hōʻailona.

Kānana Hōʻole Band - Kānā Hoʻōki Band - Kānā Hōʻole - BSF

I kekahi manawa i kapa ʻia ʻo ka band stop filter (BSF), ʻo ka band reject kahi kānana e hiki ai i ka hapa nui o nā alapine ke hele i ka loli ʻole. Eia naʻe, hoʻemi ia i nā alapine e hāʻule ma lalo o kahi kikoʻī kikoʻī. Hoʻohana like ia me ke ʻano o ka kānana bandpass.

ʻO ka mea maʻamau, ʻo kāna hana ka hele ʻana i nā alapine mai ka ʻole a i ka ʻoki mua o ke alapine. Ma waena, hoʻohele ia i nā alapine a pau ma luna o ka helu ʻoki ʻelua o ke alapine. Eia naʻe, hōʻole a poloka ia i nā alapine ʻē aʻe a pau ma waena o kēia mau kiko ʻelua.

BSF

ʻO nā mea a pau, he kānana kahi mea e hiki ai i nā hōʻailona ke hele ma ke kōkua o ka passband. ʻO kēlā ʻōlelo, ʻo ka stopband i loko o ka kānana kahi i hōʻole ʻia ai kekahi mau alapine e kekahi kānana. Inā he ala kiʻekiʻe, ala haʻahaʻa, a i ʻole bandpass, ʻo ka kānana maikaʻi ka mea i hōʻike ʻole i ka poho o ka passband. Eia nō naʻe, ʻo ka ʻoiaʻiʻo, ʻaʻohe mea e like me kahi kānana maikaʻi loa e like me ka bandpass e ʻike i kahi nalowale alapine a ʻaʻole hiki ke loaʻa i ka hōʻole palena ʻole i ka wā e hiki mai ai i ka stopband.

▲ Nā ʻIke Kūpono e pili ana i nā Kānana RF ▲

▲ Hoʻi i ka ʻIkepili ▲

FMUSER 1400-1700 MHz Kikohoʻe 3kW Bandpass kānana Compact L-band Band Pass kānana me ʻelua-mode Waveguide Cavities no RX TX System

Kumukūʻai(USD): E noi i kahi ʻōlelo

Kuai:8
FMUSER 470-862 MHz 20000W UHF Bandpass kānana 20kW Compact Band Pass kānana me ka ʻāwīwī maʻamau no ka Pūnaehana TX RX

Kumukūʻai(USD): E noi i kahi ʻōlelo

Kuai:31
ʻO FMUSER 470-862 MHz 5500W UHF Bandpass kānana 5.5kW Digital TV DTV Band Pass kānana me nā Coaxial Cavities no TX RX System

Kumukūʻai(USD): E noi i kahi ʻōlelo

Kuai:12
ʻO FMUSER 470-862 MHz 3000W UHF Bandpass kānana 3kW Digital TV DTV Band Pass kānana me nā Coaxial Cavities no TX RX System

Kumukūʻai(USD): E noi i kahi ʻōlelo

Kuai:16
ʻO FMUSER 470-862 MHz 1600W UHF Bandpass kānana 1.6kW Digital TV DTV Band Pass kānana me ke koho koho kiʻekiʻe no TX RX System

Kumukūʻai(USD): E noi i kahi ʻōlelo

Kuai:16
ʻO FMUSER 470-862 MHz 750W UHF Bandpass kānana 750W Digital TV DTV Band Pass kānana me ke alapine kūpono no TX RX System

Kumukūʻai(USD): E noi i kahi ʻōlelo

Kuai:23
FMUSER 470-862 MHz 350W UHF Bandpass kānana 350W Digital TV DTV Band Pass kānana me ka laulā maʻamau no TX RX System

Kumukūʻai(USD): E noi i kahi ʻōlelo

Kuai:14
FMUSER 167-223MHz 10000W VHF Bandpass kānana 10kW VHF Band Pass kānana Me nā Coaxial Cavities no TX RX System

Kumukūʻai(USD): E noi i kahi ʻōlelo

Kuai:25
ʻO FMUSER 167-223MHz 5000W VHF Bandpass kānana 5kW VHF Band Pass kānana me ke alapine kūpono no TX RX System

Kumukūʻai(USD): E noi i kahi ʻōlelo

Kuai:17
ʻO FMUSER 167-223MHz 3000W VHF Bandpass kānana 3kW VHF Band Pass kānana me ke alapine kūpono no TX RX System

Kumukūʻai(USD): E noi i kahi ʻōlelo

Kuai:29
ʻO FMUSER 167-223MHz 1500W VHF Bandpass kānana 1500W VHF Band Pass kānana me ke alapine kūpono no TX RX System

Kumukūʻai(USD): E noi i kahi ʻōlelo

Kuai:30
FMUSER 167-223MHz 500W VHF Bandpass kānana 500W VHF Band Pass kānana me nā Coaxial Cavities no TX RX System

Kumukūʻai(USD): E noi i kahi ʻōlelo

Kuai:24
FMUSER 87-108MHz 10000W FM Bandpass kānana 10kW FM Band Pass kānana me ka Bandwidth maʻamau no ka Pūnaehana Transmitter

Kumukūʻai(USD): E noi i kahi ʻōlelo

Kuai:18
FMUSER 87-108MHz 5000W FM Bandpass kānana 5kW FM Band Pass kānana me nā Coaxial Cavities no FM Radio Antenna System

Kumukūʻai(USD): E noi i kahi ʻōlelo

Kuai:17
FMUSER 87-108MHz 3000W FM Bandpass kānana 3kW FM Band Pass kānana me ke alapine kūpono no ka ʻōnaehana Radio Antenna FM.

Kumukūʻai(USD): E noi i kahi ʻōlelo

Kuai:24
FMUSER 87-108MHz 1500W FM Bandpass kānana 1.5kW FM Band Pass kānana me ke alapine kūpono no ka Radio Radio

Kumukūʻai(USD): E noi i kahi ʻōlelo

Kuai:35
FMUSER 500W FM Bandpass kānana haʻahaʻa VSWR 87-108MHz Frequency Tuneable FM Band Pass kānana no TX RF System

Kumukūʻai(USD): E noi i kahi ʻōlelo

Kuai:15
FMUSER 10kW VHF Bandstop kānana 167-223 MHz 10000W Band Stop kānana Mana Kiʻekiʻe VHF Band Reject kānana VHF Notch kānana no TX RX System

Kumukūʻai(USD): E noi i kahi ʻōlelo

Kuai:11
10kW VHF Low Pass kānana 167-223 MHz Coaxial Lowpass kānana me nā alapine likeʻole a me ka pae mana no ka TX RX System

Kumukūʻai(USD): E noi i kahi ʻōlelo

Kuai:34
20kW FM Kānana Holo Haʻahaʻa 87-108 MHz FM Hoʻolaha Low Pass kānana no ka FM Transmitter a me nā kahua hoʻolaha.

Kumukuai(USD): Hoʻokaʻaʻike mai iā mākou

Kuai:51

He aha kāu e ʻike ai e pili ana i 20kW FM Low Pass Filter
Papa Kuhikuhi Uila o FMUSER 20kW Kānana Holo Haʻahaʻa (Nā Kuhikuhi wale nō)
Kaʻana like ma ka Radio Interference

He aha kāu e ʻike ai e pili ana i 20kW FM Low Pass Filter

ʻO ka ʻĀpana aʻe ʻo ia ka Electrical Index o FMUSER 20kW Low Pass Filter | Hōʻalo

ʻAe, he nui nā mea āu e hoʻolohe ai! Eia nō naʻe, ma ke ʻano he mea hoʻokele lekiō, ʻoi aku ʻoe i ʻike ma mua o FMUSER, akā eia, i mea e pale ai a hoʻomaikaʻi i kāu mau mea lekiō, pono ʻo FMUSER e waiho i ʻekolu manaʻo no ʻoe, ma hope o kou kūʻai ʻana i kēia kānana 20kW FM haʻahaʻa haʻahaʻa. , ʻekolu mau mea e pono ai ʻoe e ʻike: ka hana, ka hoʻonohonoho ʻana, a me ka TV kelepona.

1. Hana o ka RF Filter

Hoʻolālā ʻia kēia kānana haʻahaʻa haʻahaʻa e hōʻemi a i ka hapa nui o nā hihia e hoʻopau i ke kīwī kīwī i hoʻokumu ʻia e ka ikehu harmonic i hana ʻia i loko o nā transmitters FM.

ʻO ka kānana he bi-directional ʻo ia hoʻi hiki ke hoʻokomo ʻia ma kēlā me kēia ʻaoʻao. Hōʻike ka 20kW FM transmitter filter model A i kahi attenuation i nā alapine ma luna o 140 MHz e like me ka mea i hōʻike ʻia ma ka pihi pane ma lalo.

HOʻOLAHA : ʻAʻole pono e ʻoi aku ka hōʻailona hoʻokomo no ke kānana 20kW ma mua o 20000 watts. ʻO ka hoʻohana ʻana ma nā mana kiʻekiʻe aʻe hiki ke hōʻino mau i ke kānana a e hoʻopau i ka palapala hoʻokō.

2. Hoʻokomo i ka kānana RF

Pono e hoʻokomo ʻia ka kānana i kahi kokoke i ka puka o ka transmitter e like me ka hana
Ke hoʻohana nei i nā mea hoʻohui EIA 3 1/8" me nā mea hoʻohui kāne ma kēlā me kēia ʻaoʻao.

AKAHELE : HIKI KE WELA KE KĀNANA I KA WĀ E HANA ANA, he hōʻailona kēia e hana nei ia i kāna hana ma ka hoʻopuehu ʻana i ka ikehu harmonic ma ke ʻano o ka wela.

3. Hoʻopiʻi mai kou Neiborhood Cable TV

Inā hoʻopilikia kāu transmitter i kahi ʻōnaehana TV kelepona ʻaʻole hiki ke hoʻopau ʻia ka pilikia ma o ka hoʻohana ʻana i kahi kānana haʻahaʻa haʻahaʻa. ʻO kekahi mau hui kelepona ʻaʻole lawe i nā ala FM ma kā lākou ʻōnaehana hiki ke hoʻokomo i nā kaha TV ma ka pā hoʻolaha FM. Inā ʻo ia ka hihia, hiki i kāu alapine (ka mea lawe) ke kumu i ka keakea a ʻaʻole pono ka kānana. E kelepona i kāu hui uwea kūloko no ka ʻike hou aku. I kekahi mau hihia, hiki i ka hui kelepona ke hoʻoponopono i ka pilikia ma ka hoʻololi ʻana i ke kaula kahiko a i ʻole.

Papa Kuhikuhi Uila o FMUSER 20kW Kānana Holo Haʻahaʻa (Nā Kuhikuhi wale nō)

ʻO nā mea keleawe maikaʻi loa a me nā mea keleawe-plated, ua hoʻohiki ʻia ka ʻike mea hoʻohana
Hoʻemi ʻia ka lōʻihi
ʻO ka uhi ʻana o ka Band FM holoʻokoʻa
Loaʻa nā mea hoʻohui i kūkulu ʻia i loko
Hoʻokomo haʻahaʻa haʻahaʻa loa a me VSWR
Hiki ke koho ʻia nā pae alapine like ʻole, kahi e hoʻomaikaʻi ai i ka hiki ke hoʻolaha
Hoʻopiha piha nā pae mana like ʻole i nā pono o nā hiʻohiʻona he nui
ʻO ka pae alakaʻi ʻoihana o ka poho hoʻokomo haʻahaʻa a me ka VSWR e hoʻonui i ka maikaʻi o ka hoʻolaha no ke kahua hoʻolaha
ʻO ka attenuation kiʻekiʻe ma 2nd a me 3rd harmonic, ʻaʻohe pono e hopohopo e pili ana i ka hopena
E haʻi i kāu mea e makemake ai, kōkua mākou i ka hana maʻamau.
Hōʻole kiʻekiʻe ma o 10th Harmonic
Etc.

kükohu		A	B
hoʻonohonohoʻia		Ho'oponopono	Ho'oponopono
alapine (frequency) pilikino		87 - 108MHz	167 - 223MHz
Max. Ka mana komo		20 kW	10 kW
ʻO VSWR		≤ 1.1	≤ 1.1
hookomo Loss		≤ 0.1 dB	≤ 0.1 dB
Hoʻoikaika	2nd harmonic	35 dB	35 dB
	2nd harmonic	60 dB	60 dB
nā mea hoʻopili		3 1 / 8 "	3 1 / 8 "
Ka helu o na Elements		7	7
Ana		85 × 95 × 965 mm	85 × 95 × 495 mm
Weight		~ 8 kg	~ 4.4 kg

1. Nā kumu ma hope o ka hoʻokuʻu ʻana i ka harmonic a me ka hoʻopunipuni

ʻO kahi mea hoʻolele lekiō amateur maikaʻi ʻole paha ke kumu o nā harmonic mana kiʻekiʻe. E pili pū ana i ka hoʻouna lekiō o nā mea hana ʻē aʻe e pili ana.
Hoʻopuka pū nā amplifier i nā harmonics. E like me kā mākou e ʻike ai, e hoʻololi lākou i ka nalu hōʻailona, a i ʻole lākou he laina ʻole i kekahi ʻano. ʻO ka hoʻolālā ʻana i ka lekiō maikaʻi ʻole e hoʻonui i nā pae harmonic. No laila, hiki iā ʻoe ke hōʻemi i ka hoʻopili ʻana ma ka hoʻohana ʻana i kahi hoʻolālā platform maikaʻi.
ʻOiai inā ʻaʻole e hoʻouna ikaika ka mea hana, e hoʻopuka ia i nā hoʻokuʻu hoʻopunipuni. Ma muli paha o nā hōʻailona wikiwiki, nā lako mana walaʻau, a i ʻole nā pilikia hōʻailona ʻē aʻe. Inā e hoʻouna ikaika ana ka hāmeʻa, hiki ke hoʻokuʻu hewa ʻia no nā kumu ʻelua:
Aia ka leo alapine kiʻekiʻe i ke kaula mana i hoʻopili ʻia i ka lekiō. Hoʻokumu ia i ka mana amplifier o ka lekiō e hana i kekahi mau alapine.
ʻO kekahi mau mea ma ka PCB e ʻohi i ke alapine kumu.

HOʻOLAHA : Hiki ke hana ʻia ka hoʻoili wahaheʻe inā hoʻoili hewa ka mea hoʻoili ma waho o ka bandwidth kūpono a i ʻole ke ʻano i hoʻohana ʻia. I kēia hihia, hoʻopuka ka mea hoʻoili i kahi splash, kahi e hoʻopilikia ai i nā kikowaena ʻē aʻe i hoʻonohonoho ʻia i nā alapine kokoke i ke kāʻei alapine.

2. Pehea e hōʻemi ai i ka hopena o ka Harmonics a me ka hoʻokuʻu hoʻopunipuni?

Hiki ke lawe ʻia kēia mau ʻanuʻu no ka hoʻomalu ʻana i ka pae keakea:

E nānā i ka transmitter e hōʻemi i ka hoʻokuʻu hoʻopunipuni.
E hōʻoia i ka mamao o nā lako a me nā hui walaʻau mai ka antenna.
Hōʻalo i ka hoʻohana ʻana i nā mea hoʻolele lekiō amateur me nā hana maikaʻi ʻole.

HOʻOLAHA: ʻAʻole hiki ke pale ʻia nā hoʻokuʻu harmonic a me nā hoʻokuʻu wahaheʻe akā hiki ke hoʻemi ʻia i kekahi ʻano. ʻO kēlā me kēia hōʻailona harmonic ma waho o ke kahawai i koho ʻia o ka transmitter ua manaʻo ʻia he hoʻoili wahaheʻe. ʻO ka maʻamau, ʻo ia ka hopena o nā lako hana maikaʻi ʻole a i ʻole ke komo ʻana o ke kaiapuni.

Kaʻana like ma ka Radio Interference

ʻO kēia ma lalo iho kahi kaʻana ʻike ʻike lekiō e pili ana i ke ʻano o ke keakea lekiō a pehea e hōʻemi ai i ka hopena o ke keakea radio. Ke manaʻoʻiʻo nei mākou ua lawa ka ʻike ma mua o nā kānana RF, akā aia kekahi mau pilikia o ka hoʻouna ʻana i ka lekiō a me ka hoʻokipa ʻana i ke ola maoli. He nui nā mea kūʻai aku ma ka lekiō i kuha ʻawaʻawa i ka lekiō a noi mai iā mākou e hoʻolālā i nā hoʻonā kūikawā no lākou. No laila, e wehewehe pōkole mākou i kekahi ʻike kūpono e pili ana i ke keakea ʻana o ka lekiō i nā haneli mau huaʻōlelo i koe

1. He aha ke ʻano o nā lako e hiki ke hoʻopili ʻia e ka hoʻopili lekiō?

Hiki ke hoʻopilikia maikaʻi ʻia nā mea lekiō a me nā mea lekiō ʻole e nā hōʻailona lekiō. Aia nā lekiō AM a me FM, nā kīwī, nā kelepona ʻole, a me nā intercom uea. ʻO nā lako uila non-radio e pili ana i nā ʻōnaehana leo stereo, nā kelepona uea, a me nā intercom uea maʻamau. Hiki ke hoʻopilikia ʻia kēia mau mea hana a pau e nā lekiō.

2. He aha ka mea e hiki ai ke hoʻopilikia i ka lekiō?

Hoʻopili pinepine ʻia ka wā e hoʻohana ʻia ai nā mea hoʻolele lekiō a me nā lako uila ma kahi kokoke loa o kekahi. Hoʻopilikia ʻia e:

Ua hoʻokomo pono ʻia nā lako hoʻolele lekiō;
He lekiō ikaika mai kahi mea hoʻolele kokoke;
ʻO nā hōʻailona makemake ʻole (i kapa ʻia ka radiation spurious) i hana ʻia e nā mea hoʻouna; a
ʻAʻole lawa ka pale a i ʻole kānana ʻana i nā mea uila e pale iā ia mai ka ʻohi ʻana i nā hōʻailona makemake ʻole.

3. He aha kāu e hana ai?

E ho'āʻo e pale i nā pilikia hoʻopilikia ma mua o ka hiki ʻana mai. E kūkākūkā me nā luna aupuni e ʻike i nā lula e pili ana i nā antenna a me nā hale kiaʻi. Ke loaʻa iā ʻoe kahi hoʻolālā hoʻonohonoho e kū ana i nā koi o ke kaona, e kamaʻilio me kou mau hoalauna. E wehewehe i kāu makemake e hana a no ke aha. E hōʻoia iā lākou e hana maikaʻi ʻoe e pale i nā pilikia. E hoʻomanaʻo iā lākou ʻo GRS a me nā mea hoʻolele lekiō amateur e hana pinepine i kahi lawelawe aupuni koʻikoʻi ma ke kōkua ʻana i nā luna kūloko i ka wā ulia pōpilikia a me nā hanana lehulehu.
E hoʻopaʻa pono i kāu mea hana. Pono e mamao loa ka antenna o ka radiostation mai nā hale e pili ana a mamao loa i nā laina uila e hiki ke hoʻopilikia i kāna hana. E heluhelu pono i ka pauku, Ke kau nei i kou Radio Station.
E hana i kāu kikowaena me kou mau hoalauna. E kaupalena i ka mana transmitter, inā hiki, i ka pae haʻahaʻa i koi ʻia no nā kamaʻilio kūpono. No nā kikowaena GRS kahi e hoʻouna ai, ʻaʻole ʻae ʻia nā mea hoʻonui mana, ʻaʻole pono e ʻoi aku ka nui o ka puka i ka antenna ma mua o 4 watts (hoʻokahi ʻaoʻao ʻaoʻao; 12watts peak).
E mālama pono i kāu mau mea hana ma ke kūlana maikaʻi e like me kāna mau koi ʻenehana. I kēlā me kēia manawa, pono ʻoe e hōʻoia i ka pololei o ka hoʻouna ʻana i ka alapine, aia ka bandwidth i loko o nā palena hana, a maikaʻi nā kaula o ke kikowaena, antenna, a me ka ʻōnaehana honua.

4. Pono ʻoe e:

E makaʻala i nā pilikia hoʻopilikia a hoʻāʻo e hoʻoponopono iā lākou i ka hikiwawe.
E hana pū me kou mau hoalauna e ʻike i ke kumu o ka pilikia a me ka mea e hoʻomaikaʻi ai.
ʻOiai ʻoe e hoʻāʻo nei e ʻimi i kahi ʻenehana no ka hoʻopili ʻana, e kaupalena i kāu mana transmitter a me nā manawa hana. E noʻonoʻo e pani i kāu kikowaena a hiki i ka hoʻoponopono ʻana i ka pilikia.
E ʻoluʻolu e nīnau iā mākou inā ʻoe e kū nei i nā pilikia hou aʻe

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