Lisebelisoa tsa Passive

Moo U ka Rekang Molemo ka ho Fetisisa Passive Accessories?

 

FMUSER has been one of the leading broadcast equipment suppliers for over 10 years. Since 2008, FMUSER has created a working environment that fosters creative collaboration between a staff of highly skilled engineering developers and a meticulous manufacturing team.

 

Through this spirit of and dedication to true collaboration, FMUSER has been able to create some of the most innovative electronic components, utilizing the time-tested principles of yesterday and incorporating the advanced science of today.

 

fmuser-e-ea-tla-seteishene-seteishene-ka-world-supply-700px.jpg

 

One of our proudest achievements, as well as a popular choice of our many clients, is our passive components for the broadcast transmitter stations.

 

"U ka fumana lintho tse ling tse ntle ho tsoa ho FMUSER. Li koahela mefuta eohle ea matla bakeng sa Transmitter Combiner, e ntle ka ho fetisisa ea FM Combiner e rekisoang, matla a ho tloha 4kw ho isa 15kw, 40kw ho 120kw."

- - - - - James, setho se tšepahalang sa FMUSER

 

FMUSER High-Quality FM Combiners for Broadcast Station

 

Ke leboha feme ea maemo a lefats'e, FMUSER, e etelletseng pele moetsi oa thepa ea khaso, has successfully served all kinds of customers by providing reliable broadcast solutions for over 10 years, one thing is sure a high-power transmitter combiner with multiple inputs and outputs, is usually employed to broadcast multiple sets of FM programs with shared FM antennas. 

 

Our FM Combiner Works Well In:

 

  • Liteishene tsa seea-le-moea tsa profeshenale tsa FM maemong a liprofinse, masepala le makeisheneng
  • Liteishene tsa seea-le-moea tsa FM tse mahareng le tse kholo tse nang le khaso e pharalletseng
  • Professional FM radio station with millions of audience
  • Basebelisi ba seea-le-moea ba batlang ho reka liphatlalatso tse kholo tsa seea-le-moea tsa FM ka theko e tlase

 

Kopa Khopolo

 

FM Combiners: What Are They Exactly?

 

The application of the FM combiners can meet the increasing broadcast needs, and solve the problem of lack of space on the antenna tower. We all know that the FM balance combiner for the radio stations is also known as the Constant Impedance Combiner(CIB), e ts'oanang le Sistimi e kopanyang ea FM thekenoloji ke tharollo e phethahetseng ea theko e tlase bakeng sa baphatlalatsi ba seea-le-moea.

 

Lenakana la FM le hloka ho ba lenakana le pharaletseng le nang le matla a lekaneng le leqhubu le felletseng la maqhubu ho fihlela litlhoko tsa mokopanyi oa FM. Bakeng sa maqhubu a fapaneng a ts'ebetso, ho hlokahala mekhoa e fapaneng ea mats'eliso e le ho tsamaisana le sekhahla sa maqhubu a emeng ho fihla boemong bo tloaelehileng ba tekheniki, e leng se etsang hore motsoako ona oa FM o sebetse haholo joalo ka Sistimi e Kopantsoeng ea FM ea seea-le-moea sa FM.

 

The FM combiner technology which applies the advanced RF technology and the latest CAD technology, that has 3/4 cavities (channels) input ports in total, which means it can transmit signals from a few couples of FM solid-state FM transmitters correspondingly. It is uninterruptably designed and developed in years by our experienced RF technicians, which means this high-power FM combiner e tla le boleng bo tšepahalang le theko e tlase.

 

Hore na o rookie kapa setsebi sa theknoloji ea khaso ea RF, hoa hlokahala ho tseba hore Mohokahanyi oa likanale tse 4 ke karolo ea bohlokoa 'me e theha sehokelo se hokahanyang se tlang pele le se latelang ho sistimi ea phetiso ea TV. Mosebetsi oa eona ke ho hokahanya liphetho tsa mochini o fetisang liteishene tse fapaneng ho kanale e le 'ngoe e le ho sebelisa antenna e le 'ngoe bakeng sa liteishene tse fapaneng. Lisebelisoa tsa khaso ea FM bakeng sa liteishene tsa seea-le-moea.

 fm-combiner-is-widely-used-in-radio-broadcast-station-with-high-power-fm-transmitter-550px.jpg

 

Hobane lenakana le bitsa chelete e ngata, 'me tora ea manakana e ka ba le li-antenna tse fokolang feela, mokopanyi oa FM o ka fokotsa litšenyehelo haholo tsa sistimi ea phetisetso ea FM/TV.

 

FMUSER e akaretsa tse fapaneng likhokahanyo tsa transmitter tse rekisoang, like FM balanced combiner, star type combiner (branched combiner), hybrid combiner, etc., is able to meet various requirements. This product achieves tailored retirement and meets different power levels and various models combination. Unique wireless adjacent frequency transmission solution and overall layout in system avoid reusing filter, reka likhokahanyo tsa FM ho FMUSER e ka fokotsa tahlehelo ea phetisetso ea sistimi mme ea boloka litšenyehelo tsa hau.

 

Keletso ea ho Sebelisa Mokopanyi oa FM

 

Mokopanyi ke sesebelisoa se sa sebetseng, se nang le matla a mangata ho feta sephatlalatsi sa FM. Ka hona, ka mor'a ho kenya le ho lokisa, ha ho hlokahale ho e lokisa hape. The Likopano tse 4 tsa cavity FM ho hlokahala ha ho hlokahala ho fetisa matšoao a mangata ho tsoa ho antenna e le 'ngoe. Ntle le ho kopanya hantle, lipontšo li tla sebelisana ho li-transmitters tse ling, ho hlahisa lihlahisoa tsa intermodulation. 

 

Several Things to Know when Using the FM Combiner

 

Haeba u moenjineri ea hloahloa oa khaso, hoa hlokahala hore u tsebe hore na ba joalo lisebelisoa tsa khaso tsa kamore ea rack work, including the basic principles of FM broadcasting equipment, and radio station equipment such as the Setsi sa khaso ea FM, FM antenna, and RF combiner, etc. Fortunately, we have the best FM technical team that can help you with all kinds of how-to or what-is problems, and we also have the mentioned Thepa ea khaso ea FM e rekisoang, kaofela ha tsona ke tsa boleng bo botle ka ho fetisisa ba phatlalatso, mohlala, FMUSER litharollo tsa khaso kaofela li hlophisitsoe ka ho khetheha e le ho finyella litlhoko tsa liteishene tse fapaneng tsa seea-le-moea, ho sa tsotellehe litšenyehelo kapa ts'ebetso ea tharollo ea khaso, FMUSER e lula e le molemo ka ho fetisisa.

 

Haeba u thahasella ho eketsehileng ka theko ea motsoako oa FMUSER transmitter, ikutloe u lokolohile ho ikopanya le rona, ho siea lengolo-tsoibila la hau, ho re romella molaetsa kapa ho re letsetsa, re teng. 24/7 inthaneteng mme molaetsa/imeile/call ya hao e tla arajoa ASAP.

 

Kopa Khopolo

 

How to Choose Your FM Combiner? 5 Important Steps

 

Bareki ba bangata ba tla ho rona mme ba re botsa, "Hey, ke mefuta efe ea Likopanyi tsa FM lia rekisoa ke tse ratoang haholo? Theko ea sehokelo sa FMUSER UHF/VHF ke bokae?", Likahare tse latelang li mabapi le mokhoa oa ho khetha sistimi e kopanyang e ntle bakeng sa seteishene sa hau sa phatlalatso.

 

Hlokomela: Ha e le hantle, sena ke lekunutu la khoebo, ka kopo, u se ke oa bolella mang kapa mang ka li-transmitter tsena tse ntle ka ho fetisisa :)

  

Joale, re khetha joang se kopanyang RF e ntle ka ho fetisisa? Keletso ho tsoa ho sehlopha sa tekheniki sa FMUSER:

 

 

Step #1 Copper, silver-plated brass, and high-quality aluminum alloy are better

 

Motho oa heso, haeba e le taba ea mosebetsi oa nako e telele oa seea-le-moea sa hau, ebang ke seea-le-moea sa FM kapa TV ea naha, ha u batle hore se emise ho sebetsa ka letsatsi leo se qalang ho sebetsa ka lebaka la mabaka a mangata a makatsang.

 

Think about it, I mean, no one wants a heavy machine that costs thousands of dollars and lots of time and effort but can't work continuously? Therefore, when you can choose to have a high-performance combiner made of better materials, such as copper, silver-plated brass, and high-quality aluminum alloy, you should make your decision in time, and FMUSER can provide you with this kind of high-performance professional broadcasting equipment. We have all you want.

 

Mohato oa #2 U Hloka Setsebi se Felletseng sa Combiner

 

Sehlopha sa rona sa theknoloji se ile sa fumana maikutlo a mangata haholo a kang, "Molimo, kaha mookameli oa rona o ile a reka mochine oa 2-way ka lidolara tse likete ho bahlahisi ba bang ba sa tsejoeng ba lisebelisoa tsa seea-le-moea, palo ea balateli ba lenaneo la rona la seea-le-moea e fokotsehile." kapa "Ha ke sa khona ho mamella mokopanyi eo ea futsanehileng!" Joale re tla fana ka tlhahiso ho bona ka tieo, "Hobaneng u sa khethe setsebi sa RF se kopanyang likanale tse ngata?"

 

In most of our customers' radio stations, there are several FM transmitters or solid-state TV transmitters. At this time, those inferior combiners can't meet the modern needs of multi-channel professional transmission. You need some better equipment. FMUSER happens to cover almost all the professional multi-channel combiners you can find on the market. Let's chat, you will surely find the best one

 

Step #3 Enjoy What Your Audience Enjoys

 

Why not let the audience enjoy a better radio program while you still can. Is your audience really willing to listen to those radio programs full of harsh noise? How to have the ultimate radio program quality has become one of the goals of many of our brand repeat customers. Of course, no matter whether you are a small-town radio station or a national radio station, you don't want to lose your valuable audience. Fortunately, you can start with updating your professional broadcasting equipment, when you can have multi-function radio station equipment with ultra-low distortion, insertion loss, and low VSWR, RF combiner from FMUSER, for example, please do not hesitate. We are very honored to serve you and your audience

 

Step #4 Size is just as Important

 

Generally speaking, the total area of the radio station room won't be as large as the broadcast studio, and there are a lot of necessary broadcasting equipment, such as cabinet-type broadcasting transmitters, feeders, waveguide inflators, etc., which means that your technical team must reasonably arrange a location for the combiner without affecting the work of that expensive equipment, The common combiner may be too large to enter the rack room, which proves that the compact design is one of the important reasons why our RF combiner is still popular in large and medium-sized broadcast stations

 

Step #5 The Internal Structure still Needs to be Considered

 

What kind of broadcasting equipment can be called excellent broadcasting equipment? This is a question worth pondering. Take the combiner as an example. In hundreds of after-sales feedback of our RF combiners sold all over the world, we found some interesting content: more than half of our customers reported that they did not consider the price and appearance the first time when making an inquiry. On the contrary, they were attracted by some details that ordinary people could not pay attention to, For example, when Jack from London showed much interest in one of our broadcast turnkey solutions for his municipal radio station, we provided him with a customized multi-structure 40kw transmitter combiner with three cavities. The biggest feature of this model is its simple structure and convenient multi-frequency integration. In fact, Jack's radio station is one of the most famous in the area, and that 40kw combiner is still serving Jack and his audience since 2014. Of course, this is only one of the excellent after-sales feedback of our RF combiners. Many other customers appraised that our combiner has a small temperature rise, professional redundant power capacity design, power combination, etc. We have the ability and the confidence to provide you with a better broadcast service

 

Kopa Khopolo

 

What are the Different types of RF Combiner? 

 

Haholo-holo, li arotsoe ka: 

 

  • VHF CIB Combiners
  • VHF Digital CIB Combiners
  • VHF Starpoint Combiners
  • UHF ATV CIB Combiners
  • UHF DTV CIB Combiners
  • UHF Stretchline Combiners
  • UHF DTV Starpoint Combiners
  • UHF ATV Starpoint Combiners
  • UHF Digital CIB Combiner - Cabinet Type 
  • L-Band Digital 3-channel Combiners

 

Re na le tse ntlehali likhokahanyo tsa likanale tse ngata tsa FM lia rekisoa, buy transmitter combiners that power ranging from 4kW to 120kW from FMUSER! Specifically, they are 4 kW, 15 kW, 40 kW, 50 kW, 70 kW, and 120 kW FM CIB combiners with 3 or 4 channels, available FM CIB combiners with multiple channels from FMUSER, and frequency with 87 -108MHz, well, they are also known as the FM balanced combiners, which is totally different from the likhokahanyo tsa mofuta oa linaleli tse rekisoang; Ntle le li-balanced tse leka-lekaneng, likhokahanyo tsa Starpoint le tsona ke e 'ngoe ea mefuta e rekoang ka ho fetisisa ea li-FM, matla a ho tloha ho 1kW ho isa ho 10kW, haholo-holo, ke 1kW, 3kW, 6kW, 10kW FM Starpoint e nang le liteishene tse 3, 4 kapa tse 6. , le khafetsa ka 87 -108MHz, mefuta ena ea likhokahanyo e boetse e tsejoa e le bahokahanyi ba mofuta oa linaleli.

 

Hape re na le likanale tse ngata tse ntle ka ho fetisisa Likopano tsa TV tsa UHF/VHF lia rekisoa, reka likhokahanyo tsa TV matla a ho tloha ho 3kW ho isa ho 40kW ho tsoa ho FMUSER!

 

Likopano tsena ke 1 kW, 3 kW, 4 kW, 6 kW, 8 kW, 8/20 kW, 10 kW, 15 kW, 20kW, 15/20 kW, 24 kW, 25kW, 40 kW VHF/UHF TV e nang le 3. , liteishene tse 4, 6 kapa li-filthara tsa waveguide tsa mefuta e 'meli, li boetse li tsejoa e le likhokahanyo tsa makala a FM, tse ling tsa tsona ke mofuta o tiileng oa naha kapa mofuta oa khabinete, tse ling tsa tsona ke li-componder tsa mofuta oa dijithale tsa L-band, empa boholo ba tsona. Ke likhokahano tsa CIB kapa mofuta oa linaleli (kapa Star point) li kopanya, ka makhetlo a 167 - 223 MHz, 470 - 862 MHz, 1452 - 1492 MHz.

 

Here is some useful info about the available transmitter combiners with excellent after-sales feedback years around, you may be interested in:

 

Chate A. IPC 4 kW Transmitter Combiners theko

 

E latelang ke FM E Balanced Combiner bakeng sa thekiso | Skip

 

tlhophiso ea mohlala matla Min. Khafetsa Sebaka Narrow Band Input Max. Matla a ho kenya WideBand Input Max. Matla a ho kenya Channel/Cavity  Etela bakeng sa Tse ling
FM A 4 kW 1.5 MHz 1 kW 3 kW 3 Hape
FM A1 4 kW 1MHz * 1 kW 3 kW 4
FM B 4 kW 1.5 MHz 3kW ** 4kW ** 3 Hape
FM B1 4 kW 0.5 MHz* 3kW ** 4kW ** 4

Hlokomela: 

* Combiner e nang le sebaka sa maqhubu se ka tlase ho 1 MHz e ka etsoa ka mokhoa o ikhethileng

** Kakaretso ea matla a kenyo ea NB le WB e lokela ho ba ka tlase ho 4 kW

 

Kopa Khopolo

 

Chate B. High Power FM CIB (mofuta o leka-lekaneng) Combiner bakeng sa thekiso

 

The Previous is a 4kW Motlakase o Phahameng oa Transmitter ea Matla theko | Skip

E latelang ke FM Starpoint Motsoako bakeng sa thekiso | Skip

 

tlhophiso matla ea mohlala
Channel/Cavity 
Min. Khafetsa Sebaka Narrow Band Input Max. Matla a ho kenya WideBand Input Max. Matla a ho kenya Etela bakeng sa Tse ling
FM

4 kW

A 3 1.5 MHz 1 kW 3 kW Hape
A1
4 1MHz * 1 kW 3 kW
B 3 1.5 MHz 3kW ** 4kW ** Hape
B1 4 0.5 MHz* 3kW ** 4kW **
15 kW
A 3 1.5 MHz
Narrow Band Input
6kW **
WideBand Input



15kW **
Hape
A1 4 0.5 MHz*
6kW **
15kW **
B 3 1.5 MHz
10kW **
15kW **
Hape
B1 4 0.5 MHz*
10kW **
15kW **
40 kW
A 3 1.5 MHz
Narrow Band Input
10 kW WideBand Input
30 kW Hape
A1 4 0.5 MHz*
10 kW 30 kW
50 kW
A
3 1.5 MHz
Narrow Band Input
20kW **
WideBand Input
50kW **
Hape
A1
4 0.5 MHz*
20kW **
50kW **
70kW/120kW A 3 1.5 MHz*
Narrow Band Input
30kW **
WideBand Input
70kW** Hape
70kW/120kW
A1 3 1.5 MHz*
30kW **
120kW**
Hape

Hlokomela: 

* Combiner e nang le sebaka sa maqhubu se ka tlase ho 1 MHz e ka etsoa ka mokhoa o ikhethileng

** Kakaretso ea matla a kenyo ea NB le WB e lokela ho ba ka tlase ho 4 kW

 

Kopa Khopolo

 

Chate C. High Power FM Starpoint Motsoako theko

 

E Fetileng ke IPC Motlatsi oa FM bakeng sa thekiso | Skip

E latelang ke Theko e Kopanetsoeng ea Sehlahisoa sa Solid N-Channel Transmitter | Skip

 

tlhophiso matla ea mohlala
Channel/Cavity 
dikgokelo Min. Khafetsa Sebaka Max. Matla a ho kenya Etela bakeng sa Tse ling
FM 1 kW A 3 7-16 DIN
3 MHz 2 x 500 W. Hape
FM 1 kW A1
4 7-16 DIN
1.5 MHz 2 x 500 W.
FM 3 kW A 3 7-16 DIN
3 MHz 2 x 1.5 kW Hape
FM 3 kW A1 4 7-16 DIN
1.5 MHz 2 x 1.5 kW
FM
6 kW A 3 1 5 / 8 "
3 MHz
2 x 3 kW
Hape
FM
6 kW
A1 4 1 5 / 8 "
1.5 MHz
2 x 3 kW
FM
10 kW
A 3 1 5 / 8 "
3 MHz
2 x 5 kW
Hape
FM
10 kW
A1 4 1 5 / 8 "
1.5 MHz
2 x 5 kW
FM 20 kW
A 3 3 1 / 8 "
3 MHz
2 x 10 kW Hape
FM 20 kW
A1 4 3 1 / 8 "
1.5 MHz
2 x 10 kW

Hlokomela: 

* Combiner e nang le sebaka sa maqhubu se ka tlase ho 1 MHz e ka etsoa ka mokhoa o ikhethileng

** Kakaretso ea matla a kenyo ea NB le WB e lokela ho ba ka tlase ho 4 kW

 

Kopa Khopolo

 

Chate D. Solid-State N-Channel Transmitter Combiner 

 

E Fetileng ke Mohokahanyi oa Mofuta oa FM Star bakeng sa thekiso | Skip

E latelang ke UHF/VHF E Balanced Combiner bakeng sa thekiso | Skip

 

tlhophiso matla Channel/Cavity 
dikgokelo Min. Khafetsa Sebaka Max. Matla a ho kenya Etela bakeng sa Tse ling
FM 1 kW 2 1 5 / 8 "
3 MHz N x 1 W (N<5) Hape

 

Kopa Khopolo

 

Chate E. Matla a Phahameng IPC UHF / VHF Motsoako bakeng sa thekiso

 

E Fetileng ke Mokopanyi oa Setsi sa Tikoloho sa N-Channel Transmitter Skip

E latelang ke Theko ea Kopano ea Lekala ea VHF | Skip

 

tlhophiso matla ea mohlala
Channel/Cavity 
Min. Khafetsa Sebaka Narrow Band Input
Max. Matla a ho kenya WideBand Input
Max. Matla a ho kenya Etela bakeng sa Tse ling
VHF 15 kW A 3 2 MHz 6kW * 15kW * Hape
VHF 15 kW A1
4 1 MHz 6kW * 15kW *
VHF 15 kW B 3 2 MHz 10kW * 15kW * Hape
VHF 15 kW B1 4 1 MHz 10kW * 15kW *
VHF  24 kW
N / A 6 0 MHz
6 kW
18 kW
Hape
VHF 40 kW A 3 2 MHz
10 kW
30 kW
Hape
 VHF 40 kW A1 4 1 MHz
10 kW
30 kW

Hlokomela: 

* Combiner e nang le sebaka sa maqhubu se ka tlase ho 1 MHz e ka etsoa ka mokhoa o ikhethileng

** Kakaretso ea matla a kenyo ea NB le WB e lokela ho ba ka tlase ho 4 kW

 

Kopa Khopolo

 

Chate F. Matla a Phahameng a Matla a VHF Starpoint Combiner theko

 

E Fetileng ke UHF / VHF Balance Motsoako bakeng sa thekiso Skip

E latelang ke UHF ATV E Balanced Combiner bakeng sa thekiso | Skip

 

tlhophiso matla ea mohlala
Channel/Cavity 
litekanyo Min. Khafetsa Sebaka Max. Matla a kenyang Ho itšehla thajana lipakeng tsa Maiketsetso Etela bakeng sa tse ling
VHF 3 kW A 4 650 × 410 × 680 mm
2 MHz 2 x 1.5 kW 40 dB Hape
VHF 3 kW A1
6 990 × 340 × 670 mm
1 MHz 2 x 1.5 kW 55 dB
VHF 6 kW A 4 L × 930 × H mm *
2 MHz 2 x 3 kW 40 dB Hape
VHF 6 kW A1 6 L × 705 × H mm *
1 MHz 2 x 3 kW 50 dB
VHF 10 kW
A 3 L × 880 × H mm *
4 MHz
2 x 5 kW
45 dB
Hape
VHF 10 kW A1 4 L × 1145 × H mm *
2 MHz
2 x 5 kW
40 dB

Hlokomela: 

* L le H li itšetlehile ka likanale.

 

Kopa Khopolo

 

Chate G. Matla a Phahameng a UHF ATV CIB Combiner bakeng sa thekiso

 

E Fetileng ke VHF Starpoint Combiner e ea Thekisoa Skip

E latelang ke UHF DTV E Balanced Combiner theko | Skip

 

tlhophiso matla ea mohlala
Channel/Cavity 
Min. Khafetsa Sebaka Narrowband Input
 
 
 
 
Max. Matla a kenyang Wideband Input
 

 
 
 
Max. Matla a kenyang
Etela bakeng sa tse ling
UHF 8 kW A 4 1 MHz 2kW * 8kW * Hape
UHF 8 kW B 4 1 MHz 5kW * 8kW *
Hape
UHF 25 kW A 4 1 MHz 20kW * 25kW *
Hape

UHF 25 kW A1 6 1 MHz 20kW * 25kW *

Hlokomela: 

* Kakaretso ea matla a kenyo ea NB le WB e lokela ho ba ka tlase ho 8 kW

 

Kopa Khopolo

 

Chate H. Matla a Phahameng a UHF DTV CIB Combiner bakeng sa thekiso

 

E Fetileng ke UHF ATV e Balanced Combiner e rekisoang Skip

E latelang ke Boemo bo tiileng ba UHF Digital E leka-lekaneng Theko ea Combiner | Skip

 

tlhophiso matla ea mohlala
Channel/Cavity 
Min. Khafetsa Sebaka Narrowband Input
 
 
 
 
 
 
Max. Matla a kenyang Wideband Input
 

 
 
 
 
 
Max. Matla a kenyang
Etela bakeng sa tse ling
UHF 1 kW A 6 0 MHz 0.7 kW RMS * 1 kW RMS * Hape
UHF 1 kW B 6 0 MHz 1.5 kW RMS * 6 kW RMS *
Hape
UHF 6 kW A 6 0 MHz 3 kW RMS * 6 kW RMS *
Hape
UHF 16 kW A 6 0 MHz 3 kW RMS * 16kW RMS *
Hape
UHF
16 kW
B 6 0 MHz
6kW RMS *
16kW RMS *
Hape
UHF
25 kW
A 6 0 MHz 6kW RMS *
25 kW RMS *
Hape

Hlokomela: 

* Kakaretso ea matla a kenyo ea NB le WB e lokela ho ba ka tlase ho 8 kW

 

Kopa Khopolo

 

Chate I. Solid-State UHF Digital Balance Combiner 

 

E Fetileng ke Theko ea UHF DTV Balance Combiner Skip

E latelang ke UHF DTV Star Type Combiner e rekisoang | Skip

 

tlhophiso matla Channel/Cavity 
Min. Khafetsa Sebaka Narrowband Input

Max. Matla a ho kenya Wideband Input
 
Max. Matla a ho kenya
Etela bakeng sa Tse ling
UHF 1 kW 6 0 MHz 0.7 kW RMS * 1 kW RMS *
Hape

Hlokomela:
* Kakaretso ea matla a kenyo ea NB le WB e lokela ho ba ka tlase ho 1 kW

 

Kopa Khopolo

 

Chate J. High Power UHF DTV Starpoint Combiner bakeng sa thekiso

 

E Fetileng ke Sebaka se tiileng sa UHF Digital CIB Combiner Skip

E latelang ke Theko ea UHF ATV Starpoint Combiner | Skip

 

tlhophiso ea mohlala
Channel/Cavity 
litekanyo Min. Khafetsa Sebaka Max. Matla a kenyang dikgokelo Weight
Etela bakeng sa Tse ling


UHF A 6 600 × 200 × 300 mm
1 MHz 2 x 350 W. 7-16 DIN ~ 15 lik'hilograma
Hape
UHF B
6 800 × 350 × 550 mm
1 MHz 2 x 750 W. 1 5 / 8 " ~ 38 lik'hilograma
Hape
UHF C 6 815 × 400 × 750 mm
1 MHz 2 x 1.6 kW 1 5 / 8 " ~ 57 lik'hilograma
Hape
UHF D 6 1200 × 500 × 1000 mm
1 MHz 2 x 3 kW 1 5/8", 3 1/8"  ~ 95 lik'hilograma
Hape

 

Kopa Khopolo

 

Chate K. High Power UHF ATV Starpoint Combiner theko

 

E Fetileng ke UHF DTV Starpoint Combiner e rekisoang Skip

E latelang ke UHF Stretchline Combiner e ea Thekisoa | Skip

 

tlhophiso matla ea mohlala
Channel/Cavity 
litekanyo Min. Khafetsa Sebaka Max. Matla a kenyang dikgokelo Weight Etela bakeng sa Tse ling
UHF 20 kW A 4 Itšetlehile ka likanale
2 MHz 2 x 10 kW 3 1 / 8 " ~ 45 - 110 lik'hilograma
Hape
UHF 15 kW B 4 Itšetlehile ka likanale
2 MHz 10kW / 5kW 3 1 / 8 " ~ 65 - 90 lik'hilograma
Hape

 

Kopa Khopolo

 

Chate L. High Power UHF Motlatsi oa Stretchline bakeng sa thekiso

 

E Fetileng ke Theko ea UHF ATV Starpoint Combiner Skip

E latelang ke Matla a Phahameng a L-band Digital 3-Channel Combiner | Skip

 

tlhophiso matla ea mohlala
Bohloko ba ho Shoeloa tsenyo
litekanyo Min. Khafetsa Sebaka Max. Matla a kenyang dikgokelo Weight Etela bakeng sa Tse ling
UHF 8 A ≤0.2 dB 550 × 110 × H mm *
5 MHz 2 x 4 kW 1 5 / 8 " Itšetlehile ka likanale
Hape
UHF 20 B ≤0.1 dB 720 × 580 × H mm *
5 MHz 2 x 10 kW 3 1 / 8 " Itšetlehile ka likanale
Hape

Hlokomela:

* H e itšetlehile ka likanale

 

Kopa Khopolo

 

Chate M. High Power L-band Digital 3-Channel Combiner 

 

E Fetileng ke UHF ATV Starpoint Combiner e rekisoang Skip

Khutlela ho Chate A. Theko ea 4 kW Transmitter Combiners | Skip

 

tlhophiso matla Channel/Cavity 
Min. Khafetsa Sebaka Max. Matla a ho kenya
Ho itšehla thajana lipakeng tsa Maiketsetso
Weight litekanyo Etela bakeng sa Tse ling
CIB e ntlafalitsoeng 4 kW 6 1 MHz 3 x 1.3 kW
60 dB
~ 90 lik'hilograma
995 × 710 × 528 mm
Hape

 

Kopa Khopolo

 

A re ke re e khutlisa, ka tshebetso ya ho sebelisoa, re lokela ho kamehla ela hloko manonyeletso le polaka cores tsa maleba koba flanged le liphaephe tsa koporo. Ka lebaka la ts'ebeliso ea nako e telele le ho thothomela ha kamore ea rack ea seea-le-moea, lintho tsena li ka hlepha.

 

Haholo-holo ha o ikarabella bakeng sa lisebelisoa tse ling tsa khaso ea FM tse nang le boleng bo holimo, mohlala, motsoako o phahameng oa FM, oa hlokahala ho: 

 

  • Ho etsa mosebetsi oa tlhokomelo khafetsa, matsatsi/beke/khoeli, joalo-joalo.
  • Creating a good working condition is an important guarantee of safe and high quality. 

 

Ka hona, re lokela ho:

 

  1. Ela hloko mocheso oa e mong le e koba flanged le koporo phala kopanetsoe. 
  2. Kamehla hopola hore mosebetsi oa ho lokisa o lokela ho ba hlokolosi, ho bolelang hore hoa hlokahala ho boloka lirekoto le likakaretso e le hore boemo ba rona ba tsebo ea seporofeshenale bo ka ntlafatsoa ka ho tsoelang pele ho netefatsa boleng bo botle ba khaso ea lenaneo la pele la khaso. 
  3. Ha ho kopana ho fokola, mocheso o tla nyoloha ka potlako. Tabeng ea bothata bo joalo, re tlameha ho e rarolla ka nako, ho nka sebaka sa bend flanged kapa ho fetola polaka. 

 

FMUSER Solid-state RF Dummy Meroalo 

 

"You may find some good stuff from FMUSER. They cover all ranges of power for the RF dummy load, best high power RF dummy load, and ultra-high power RF load for sale, power ranging from 1kw to 5kw, 10kw to 200kw"

----- James, setho se tšepahalang sa FMUSER

 

RF Dummy Loads from 1KW to 5KW or More

 

Here are what we cover: 1000 watt, 1200 watt, 2000 watt, 2500 watt, 3000 watts, 4000 watts, 1kw, 1.2kw, 2.5kw, 3kw,4kw, 5kw, 1000W, 1200W, 2500W, 3000W, 4000W, 5000W.

 

fmuser 1kw dummy load 1000 watt rf load 700px.jpg fmuser 1.2 kw dummy load rf 700px.jpg fmuser 1.5kw dummy load 1500 watt rf load 700px.jpg
1KW Dummy Load RF 1.2KW Dummy Load RF 1.5KW Dummy Load RF
fmuser 2kw dummy load 2000 watt rf load 700px.jpg fmuser 2.5kw dummy load 2500 watt rf load 700px.jpg fmuser 3kw dummy load 3000 watt rf load 700px.jpg
2KW Dummy Load RF 2.5KW Dummy Load RF 3KW Dummy Load RF
fmuser 4kw dummy load 4000 watt rf load 700px.jpg fmuser 5kw dummy load 5000 watt rf load 700px.jpg fmuser 10kw dummy load 10000 watt rf load 700px.jpg
4KW Dummy Load RF 5KW Dummy Load RF 10KW Dummy Load RF
fmuser 15kw dummy load 15000 watt rf load 700px.jpg fmuser 20kw dummy load 20000 watt rf load 700px.jpg fmuser 50kw dummy load 50000 watt rf load 700px.jpg
15KW Dummy Load RF 20KW Dummy Load RF 50KW Dummy Load RF
fmuser 75kw dummy load 75000 watt rf load 700px.jpg fmuser 100kw dummy load 100000 watt rf load 700px.jpg fmuser 200kw dummy load 200000 watt rf load 700px.jpg
75KW Dummy Load RF 100KW Dummy Load RF 200KW Dummy Load RF

Those are the most commonly seen types of RF dummy loads, they are also the most popular high-power dummy loads among our customers, if you're looking for high power rf dummy load for sale, please make sure to find FMUSER, we sell broadcast equipment of amazing quality at a budget cost.

 

Additionally, in order to meet different needs of RF dummy loads, we also provide ultra high power RF loads for sale: 15000 watts, 50000 watts, 75000 watts, 100000 watts, 200000 watts, 10kw, 15kw, 50kw, 75kw, 100kw, 10000W, 15000W, 20000W, 50000W, 75000W, 100000W, 200000W, these RF dummy loads, which are specially designed for the medium and large FM radio stations, has now gained many favors from our customers who engage in first-line RF technical area 

  

Our dummy loads are featured by:

 

  • Liteishene tsa seea-le-moea tsa profeshenale tsa FM maemong a liprofinse, masepala le makeisheneng
  • Liteishene tsa seea-le-moea tsa FM tse mahareng le tse kholo tse nang le khaso e pharalletseng
  • Professional FM radio station with millions of audience
  • Basebelisi ba seea-le-moea ba batlang ho reka liphatlalatso tse kholo tsa seea-le-moea tsa FM ka theko e tlase

 

RF Dummy Loads World Supply with Best Quality

 

FMUSER hape ke e mong oa barekisi le baetsi ba thepa ea khaso ea FM e hloahloa linaheng le libakeng tse latelang: Afghanistan, Albania, Algeria, Andorra, Angola, Antigua le Barbuda, Argentina, Armenia, Australia, Austria, Azerbaijan, The Bahamas, Bahrain, Bangladesh. , Barbados, Belarus, Belgium, Belize, Benin, Bhutan, Bolivia, Bosnia le Herzegovina, Botswana, Brazil, Brunei, Bulgaria, Burkina Faso, Burundi, Cabo Verde, Cambodia, Cameroon, Canada, Central African Republic, Chad, Chile, Chaena , 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, France, Gabon, Gambia, Georgia, Jeremane, Ghana, Greece, Grenada, Guatemala, Guinea, Guinea-Bissau, Guyana , Haiti, Honduras, Hungary, Iceland, India, Indonesia, Iran, Iraq , Ireland, Israel, Italy, Jamaica, Japan, Jordan, Kazakhstan, Kenya, Kiribati, Korea, North, Korea, South, Kosovo, Kuwait, Kyrgyzstan, Laos, Latvia, Lebanon, Lesotho, Liberia, Libya, Liechtenstein, Lithuania, Luxembourg , Madagascar, Malawi, Malaysia, Maldives, Mali, Malta, Marshall Islands, Mauritania, Mauritius, Mexico, 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, Poland, Portugal, Qatar, Romania, Russia, Rwanda, Saint Kitts le Nevis, Saint Lucia, Saint Vincent le Grenadines, Samoa, San Marino, Sao Tome le Principe, Saudi Arabia, Senegal, Serbia, Seychelles, Sierra Leone, Singapore, Slovakia, Slovenia, Solomon Islands, Somalia, Afrika Boroa, Spain, Sri Lanka, Sudan, Sudan, South, Suriname, Sweden, Switzerland, Syria, Taiwan, Tajikistan, T anzania, Thailand, Togo, Tonga, Trinidad le Tobago, Tunisia, Turkey, Turkmenistan, Tuvalu, Uganda, Ukraine, United Arab Emirates, United Kingdom, United States, Uruguay, Uzbekistan, Vanuatu, Vatican City, Venezuela, Vietnam, Yemen, Zambia , Zimbabwe

 

How to Use Dummy Loads for Transmitters?

 

"Ebang u setsebi sa RF kapa u motho ea chesehelang seea-le-moea, hangata ho tsejoa hore: Haeba u batla ho etsa liteko tsa RF tsa seea-le-moea sa FM ntle le ho sebelisa lenaka la seea-le-moea-moea, joale sebelisa RF dummy load."

-----Ray Chan, mosebeletsi oa tekheniki oa FMUSER

 

Wait, what kind of transmitter can you use a dummy load along with? Ok, this secret should never say it easily but it may be useful to you: When the power of the dummy load and the FM transmitter is similar, the bigger power the dummy load has, the more transmitter of different powers can be used, in a way, it means if you have a 20kw dummy load, you can use the transmitters with power below the 20kw (50 watts, 500 watts, 600 watts, 1kw, 2kw, 2.5kw, 3kw, 4kw, 5kw, 10kw, etc); when you have a dummy load which power is up to 200KW, you can use dozens of FM transmitters of all kinds of ranged power

 

Ehlile, o ka sebelisa dummy load hammoho le hoo e batlang e le li-transmitters tsohle tsa FM tsa mefuta eohle ea matla, re etsa mefuta e latelang ea li-radio tse fumanehang tsa FM: 500W, 600W, 700W, 1000W, 1200W, 1500W, 2000W, 2500W, 3000W, 3500W, 5000W, 6000W, 7000W, 10000W, 15000W, 20000W, 30000W, 40000W, 50000W, 60000W, 70000W, 80000W, 1000 Watt, 1200 Watt, 1500 Watt, 2000 Watt, 2500 Watt, 3000 Watt, 3500 Watt, le 5000 watt, 6000 watt, 7000 watt, 10000 watt, 15000 watt, 20000 watt, 30000 watt, 40000 watt, 50000 watt, 60000 watt, 70000 watt, 80000kw, 1kw 2, 3.5kw 5, 4 watt, 5.3kw, 5.4, 8 kW, 10KW, 15KW, 18KW, 20KW, 22.5KW, 25kW, 30KW, 35KW, 40KW, 45KW, 46.4KW, 50KW, 50.7KW, 55KW, 65KW, 75KW, 80kw100k130, 150kw230, 250kw274, 300, 500 , 700kw, 748kw, 1000kw, 2000kw, XNUMXkw, XNUMXkw, XNUMXkw, le mefuta e mengata ea matla a phahameng le ho feta a li-transmitters tsa FM. 

How do FM Branched Combiners and FM Balanced Combiners Works?

Fixed impedance filter mofuta o leka-lekaneng duplexer. E na le li-couplers tse peli tse ts'oanang tsa 3dB, li-filters tse 'ne tsa "resonant cavity bandpass", tse peli tsa coaxial feeders tsa bolelele bo lekanang, le mojaro oa ho monya oa 50-ohm. Qetello ea 1 ke lets'oao la maqhubu a F3, 'me pheletso ea 5 ke boema-kepe ba pontšo ea F1 + F2 ea star diplexer.

 

 

* Star Point Combiner le Combiner e leka-lekaneng

  

The F3 signal is input from one end of the first 3dB coupler, and the power is divided into two by 3dB coupler 1, then half of the power is output at the 3-end and the 4-end respectively. The phase of the 3-end is the same as that of the  1-end, and the phase of the 4-end is 90 ° behind that of the 3-end. Due to the influence of two bandpass filters on F3, the signal passes through the middle of the filter unimpeded and is transmitted to the second 3dB coupler According to the inverse characteristics of the third dB coupler, the two powers are equal, and the phase of the 7-terminal signal is 90 ° behind that of the 6-terminal signal.

 

Because the previous 4-terminal signals are 90 ° behind the 3-terminal signals, the F3 signals at the 6-terminal are synthesized in-phase and sent to the antenna for transmission, while the F3 signals at the 5-terminal are reversed-phase and cancel each other, so the F3 signals will not enter the F1 + F2 channels to cause crosstalk. The F1 + F2 signal is input from 5 terminals, and the power is divided into upper and lower channels. The resonant cavity has total reflection to the F1 + F2 signal, so it is synthesized in phase at the 6-end and canceled in phase at the 5-end by a 3dB coupler. Finally, F1, F2, and F3 are synthesized at six terminals and sent to the antenna to realize frequency synthesis

 

Kenyelletso e khuts'oane ea 3dB Coupler

 

3dB coupler e na le lipara tse peli tsa λ/4 li-terminals tsa mokhanni oa ka hare le li-conductor tse ka ntle li etsa likou tse 'nè, tse fetoloang ho ba khokahanyo pakeng tsa mohala o tšoanang oa phetisetso le potoloho ea ka ntle. Boema-kepe bo bong le bo bong bo na le ts'ebetso e ts'oanang, e leng 50 ohm.

 

When the F3 power signal is input from the 1-end, half of the power is output at the 3-end, which is in phase with the first end, and half of the power is output at the 4-end. However, the phase is 90 ° behind the 1-end, and there is no output at the 2-end, so the 2-end and the 1-end are isolated from each other, and signals of different frequencies can be sent at the two ports to realize the duplex. Ideally, the 2-end does not affect the performance of the coupler, and the input impedance of the 1-end is independent of the frequency, so it shows broadband characteristics.

 

3dB coupler ka boeona ke duplexer e bonolo. Ts'ebetsong ea 'nete, li-terminals tse peli li tla tšela palo e nyane ea matšoao, ka hona, ho hanyetsa ho monya ho sebelisoa ho monya ts'ebeliso.

 

Kenyelletso e Khutšoanyane ea Sefe ea Bandpass

 

Filter ea band-pass e entsoe haholo-holo ka li-resonator tse peli tse nang le li-terminals tse peli tsa λ/4 tse bulehileng. Li-resonator tse peli li kopantsoe ke masoba a manyane, a ts'oana le potoloho e habeli ea loop parallel resonant. Kenyelletso le tlhahiso li kopantsoe ka ring-coupled, 'me litšobotsi tse hlokahalang tsa "passband" li fumanoa ka ho rala sebaka sa ho kopanya lesale le sebaka sa ho kopanya.

 

 

 * Lihokelo tsa motsoako oa transmitter

 

Teko ea Teko ea Li-Combiners tsa FM

 

Re khetha mohlahlobi oa marang-rang o nang le lisebelisoa tsa tlhahlobo ea liketsahalo/ponahatso. Lebelo la khafetsa la teko ea sesebelisoa ke 4 ~ 1300mhz, mme lintlha tsa tlhahlobo li ka baloa ka kotloloho sesebelisoa. The impedance input le output impedance ea sesebelisoa ka bobeli 50ohm, e tšoanang le ea multiplexer. Tahlehelo ea ho bonahatsa, tekanyo ea ho itšehla thajana, le tahlehelo ea ho kenya e ka baloa ka ho toba skrineng sa sesebelisoa, se felisang phoso e bohareng, ho ntlafatsa ho nepahala ha liphetho tsa tekanyo, le ho thusa ho hlahloba liphello.

 

 

 

 

 

Tharollo ea Maqhubu a Likamano

 

  • Synthesizing three transmitters through the multi-channel combiner and transmitting in the way of a transmitting antenna. This requires that the transmitting antenna must be fully broadband. Due to the high isolation of the multiplexer, the crosstalk power is very small
  • Connecting a point frequency filter on the 105.5mhz transmitter, the isolation is only greater than 30dB, so when its transmitting antenna receives the signal, the received signal cannot reach the 105.5mhz power amplifier unit due to the full reflection of the filter, so the intermodulation frequency cannot be formed, which fundamentally solves the interference problem

 

Tharollo ea Maqhubu a Likamano bakeng sa Multifrequency Generation

 

There are three frequencies, 105.5mhz, 94.2mhz, and 89mhz, of which 105.5mhz is connected with a pair of the vertically polarized transmitting antenna and 94.2mhz.89mhz is combined with a pair of vertically polarized transmitting antennae through a star diplexer. Because the two antennas are on the same tower, the 105.5mhz transmitting antenna is not only the transmitting antenna of this frequency but also the receiving antenna.

 

E amohela matshwao a 94.2mhz le 89mhz, mme matshwao ana a mabedi a tla hlahisa matshwao a intermodulation ho 105.5mhz transmitter power amplifier. Maqhubu a hlahisoang ke 105.5 - 89 + 105.5 = 122mhz, 'me maqhubu a mang ke 105.5 - 94.2 + 105.5 = 116.8mhz. Maqhubu ana a mabeli a romelloa ka antenna e fetisang. Haeba ho na le maqhubu a sebaka sa ho sesa, e kanna ea ba sebakeng seo.

FM Star Point Combiner ke eng
  • FM Branched Combiner e loketse mats'oao a sehlopha se moqotetsane joalo ka li-transmitters tsa FM. E entsoe ka li-filters tse peli tsa li-band-pass tse nang le maqhubu a fapaneng. Li tsamaisana ka mokhoa o ts'oanang le maqhubu a tsona a fapaneng, 'me lets'oao le ka feta har'a potoloho ea filthara ntle le tšitiso.
  • FM Branched Combiner is composed of a filter, star point, and connecting line. All transmitters are connected with the star point through the filter and connecting line, and the Starpoint combiner is connected with the antenna.
  • FM Branched Combiner e entsoe ka li-resonator tse peli tsa "bandpass filter" BPF1 le BPF2 tse hokahaneng le tee e kopantsoeng ka sebopeho sa T. E 'ngoe le e' ngoe ea bandpass filter resonator e lumellana le maqhubu a khethiloeng 'me e thibela maqhubu a mang
  • FMUSER hape ke e mong oa barekisi ba mofuta oa linaleli ba tsebahalang haholo indastering ea lisebelisoa tsa seea-le-moea, reka sekopanyi sa Starpoint se nang le liteishene tse ngata le li-cavities tse tsoang ho FMUSER, re fana ka boleng le theko e ntle ka ho fetesisa, hammoho le tharollo ea sistimi e hlophisitsoeng ea FM bakeng sa seteishene sa seea-le-moea.

Hobaneng o Hloka Mokopanyi oa FM?

RF Combiner ke eng?

 

Ka mantsoe a bonolo, motsoako oa RF ke sesebelisoa se sebetsang e le karolo ea phetiso. E kopanya matla a lipakeng tsa likou tse peli kapa ho feta, 'me hangata li sebelisoa bakeng sa ho hokahanya li-antenna tse fetang bonngoe ho seea-le-moea se le seng. Li-connectors tsa RF li ka boela tsa sebelisoa ho hokela liea-le-moea tse ngata ho lenakana le le leng ho sebelisa maqhubu a tšoanang.

 

Baphatlalatsi ba ka kopanya matšoao a mangata a khaso ea FM ho sekontiri sa transmitter (AKA: lihokelo tsa lintlha tsa naleli ea FM kapa likhokahanyo tse leka-lekaneng tsa FM), kapa kopanya matshwao a TV ho Likopanyi tsa UHF/VHF (AKA: UHF VHF Likopanyi tsa Starpoint kapa li-componer tse leka-lekaneng) ’me bamameli ba ka mamela mananeo a mangata a khaso ka nako e le ’ngoe. Ho fetisa maqhubu a 'maloa ho tloha tsamaisong e le' ngoe ea li-antenna tsa marang-rang ho hloka hore ho sebelisoe mokhoa o kopanyang, kapa motsoako, o entsoeng ka li-filters tsa RF le lithapo tsa phetisetso tse hokelang. Ho na le mefuta e 'meli ea likhokahanyo tsa likanale tse ngata, e leng sehokelo sa FM le se kopanyang TV, li fapane ho latela ts'ebeliso e ikhethileng:

  • FM Combiner - FM Branched Combiner (Star Point Combiner)/FM E Balanced Combiner (CIB-Constant Impedance Combiner)
  • TV Combiner - UHF/VHF Combiner (UHF/VHF e leka-lekaneng e kopanyang le e kopanyang makala)

 

Hobaneng ha RF Combiner e le Bohlokoa hakaale?

 

E le ho rarolla bothata ba khaello ea lisebelisoa tsa litora tsa li-antenna, ho ka sebelisoa theknoloji ea tora e arolelanoang bakeng sa li-channel tse ngata tsa FM le TV. 

 

Ho theosa le lilemo, theknoloji le ho fetoha, le puisano ea elektroniki e fetohile karolo ea bohlokoa le ea bohlokoa bophelong ba letsatsi le letsatsi, 'me ho FMUSER, re hlokometse lintlha tsena. Re ntse re tsoela pele ho etsa lipatlisiso le ho hlahisa mekhoa e mecha ea ho ntlafatsa khetho ea rona ea RF e kopanyang RF ho netefatsa hore bareki ba rona ba tla lula ba khona ho fumana mochini oa RF o ke keng oa sebetsa feela ka morao empa hape o tla sebetsa le mahlale a ntseng a hlaha.

 

FMUSER e fana ka mefuta e mengata ea likanale tse ngata li-duplex le li-triplexers lia rekisoa ho kopanya matshwao a FM a analoge le a HD Radio. Lihlahisoa tsena li kenyelletsa 10 dB Hybrid Injectors, Reverse Fed Constant Impedance FM Channel Combiners, le High-Efficiency Diplexer.

 

Why do You Need a High Power FM Balanced Combiner for Your Radio Station?

 

Ka nts'etsopele e potlakileng ea indasteri ea seea-le-moea le thelevishene ea lefats'e, liteishene tsa seea-le-moea le TV linaheng tse ngata le libaka li eketsa liteishene tsa FM le liteishene tsa TV. Mabapi le ts'ebetso le litšenyehelo, e lokela ho ba khetho e ke keng ea qojoa ho sebelisa mochine o fetisang likanale tse ngata ho hlokomela khaso e arolelanoang ea litora tse ngata. 

 

Ho nka Mechine ea 4 Transmitter kopanya mohlala, sesebelisoa se joalo se tsoakiloeng sa RF se ka fetisa bongata ba matšoao a fapaneng a li-frequency transmitter ka ho arolelanoa. Lenakana la phetiso ea FM, e leng se bolelang hore ka ho sebelisa thepa e joalo ea khaso, liteishene tseo tsa khaso li ka hasa melaetsa e mengata ka mochine o le mong oa transmitter ka nako e le ’ngoe ho e-na le ho sebelisa TENS OF sete tsa manakana a khaso ea FM.

  

Ho hlakisa haholoanyane, ho na le mabaka a latelang a 5 a ho hlalosa ka bokhutšoane bohlokoa ba ho ba le likanale tse ngata tse ntle mokopanyi bakeng sa seteishene sa khaso sa FM/TV:

 

  • Lisebelisoa tsa bohlokoa tsa theknoloji ea tora e arolelanoang ke motsoako oa li-channel tse ngata. Mohokahanyi o motle oa FM/UF/VHF o ka ntlafatsa ka kotloloho ts'ebetso ea sistimi eohle ea phetisetso ea matšoao.
  • Additionally, a good FM/UF/VHF combiner can save the cost of setting up multiple antennas, especially in some urban transmitting stations, Reducing the buying costs of RF transmitting equipment is the most effective way to maintain the operation of the FM/TV station. 
  • What's more, a tower needs to install multiple sets of TV transmitting antennas and FM broadcast antennas. However, the available height of the tower is very limited.
  • For the FM antenna tower, generally, only a set of FM antennas is allowed to be installed on the tower, thus is necessary to use a good transmitter combiner so as to broadcast multiple sets of FM programs to the audience at the same time.
  • Ka hona, ho bohlokoa ho ba le tlhahlobo e tloaelehileng ea index ea tekheniki ho thusa ho lekanya boleng ba kompone ea FM, e amanang ka kotloloho le boleng ba khaso ea khaso ea FM.

 

Ho fmradiobroadcast.com, re na le basebetsi ba nang le boiphihlelo ba ikemiselitseng ho araba lipotso leha e le life tseo u ka bang le tsona mabapi le ho fumana motsoako o nepahetseng oa RF. Ikutloe u lokolohile ho ikopanya le rona neng kapa neng ka ho etela fmradiobroadcast.com kapa ka ho letsetsa +86 - 139 - 22702227. Ka mehla re ba bang ba bahlahisi ba pro FM ba kopanyang ka ho fetisisa.

 

Reka Multi-Channel Transmitter Combiner bakeng sa Radio Station? Mona ke Sebaka se Nepahetseng!

 

FMUSER ke e 'ngoe ea bahlahisi ba li-transmitter tse hloahloa tse hlahisang li-transmitter tse 4 tse rekisoang linaheng tse haufi le 200+ le libaka ho pota lefatše, ke tsena tseo u ka rekang li-transmitter tsa tsona:

 

Afghanistan, Albania, Algeria, Andorra, Angola, Antigua le Barbuda, Argentina, Armenia, Australia, Austria, Azerbaijan, Bahamas, Bahrain, Bangladesh, Barbados, Belarus, Belgium, Belize, Benin, Bhutan, Bolivia, Bosnia le Herzegovina, Botswana , Brazil, Brunei, Bulgaria, Burkina Faso, Burundi, Cabo Verde, Cambodia, Cameroon, Canada, Central African Republic, Chad, Chile, China, 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, Fora, Gabon, Gambia, Georgia, Jeremane, Ghana, Greece, Grenada, Guatemala, Guinea, Guinea - Bissau, Guyana, Haiti, Honduras, Hungary, Iceland, India, Indonesia, Iran, Iraq, Ireland, Israel , Italy, Jamaica, Japan, Jordan, Kazakhstan, Kenya, Kiribati, Korea, North, Korea, South, Kosovo, Kuw ait, Kyrgyzstan, Laos, Latvia, Lebanon, Lesotho, Liberia, Libya, Liechtenstein, Lithuania, Luxembourg, Madagascar, Malawi, Malaysia, Maldives, Mali, Malta, Marshall Islands, Mauritania, Mauritius, Mexico, 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, Poland, Portugal, Qatar, Romania, Russia, Rwanda, Saint Kitts le Nevis, Saint Lucia, Saint Vincent le Grenadines, Samoa, San Marino, Sao Tome le 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 le Tobago, Tunisia, Turkey, Turkmenistan, Tuvalu, Uganda, Ukraine, United Ar ab Emirates, United Kingdom, United States, Uruguay, Uzbekistan, Vanuatu, Vatican City, Venezuela, Vietnam, Yemen, Zambia, Zimbabwe

 

Important Electrical Index of the 4 Chan FM Combiner

 

40kW transmitter e kopanyang likanale tse 4 ho tsoa ho FMUSER e sebelisoa ho kopanya RF ho tsoa mehloling e mengata e fapaneng. Likopano tsa FM li ka sebelisoa lits'ebetsong tse ngata tse fapaneng ho fihlela liphetho tse fapaneng.

 

Ka mefuta e mengata ea bohlokoa, e ka fetoha mosebetsi o boima ha ho tluoa tabeng ea ho khetha motsoako o nepahetseng oa FM bakeng sa litlhoko tsa hau. Ha e le hantle, ha u khetha a mochini o kopanyang likanale tse ngata, motho o tlameha ho nahana ka litlhaloso tsa likarolo tsa bohlokoa tsa ts'ebetso, tahlehelo ea ho kenya, ho itšehla thajana pakeng tsa likou, ho ba haufi le boholo ba matšoao a ho arohana, le ho ba haufi le mohato oa pontšo bakeng sa matšoao a arohaneng.

 

  1.  Ho behwa ka thoko: Ho itšehla thajana ho bolela bokhoni ba ho itšehla thajana ba lisebelisoa tse ngata ho mats'oao a mangata a maqhubu a fapaneng. Haeba matla a ho itšehla thajana a fokola. Phapanyetsano e tla hlahisoa lipakeng tsa matšoao a mabeli, ka hona ho fokotsa boleng ba khaso ea FM. Ka kakaretso, tekanyo ea ho itšehla thajana e betere ho feta 30dB
  2.  Nako e fokolang ea nako: nako e fokolang pakeng tsa maqhubu a mabeli a ho kenya ha duplexer hangata e ka ba 1.2MHz (mofuta o leka-lekaneng) tlas'a motheo oa ho netefatsa index ea tshebetso.
  3.  Ho Ts'oarella: 50 ohms (coaxial), e tsamaellanang le tšitiso e hlahisoang ke transmitter ea FM.
  4.  Output Impedance: 50 ohm (coaxial), e tsamaellanang le tšitiso e kenang ea sesebelisoa sa antenna.
  5.  Maqhubu Range: 87 - 108mhz (sehlopha sa khaso sa frequency modulation kaofela)
  6.  Matla a Matla: Bokhoni ba matla ba motsoako oa likanale tse ngata bo tla khethoa ho latela matla a mochini o fetisang molaetsa oa FM.
  7.  Tahlehelo ea ho kenya: < 0.25dB (refers to the attenuation caused after the signal passes through the duplexer).
  8.  VSWR: Karo-karolelano ea "voltage stand wave" ea terminal e kenang e tla ba ka tlase ho 1.1

 

Likarolo tsa Bohlokoa ho Haha Mohokahanyi oa Likanale tse 4

 

E le ho nolofalletsa antenna ea broadband ho fetisetsa mananeo ka nako e le 'ngoe ho tloha liteisheneng tse' maloa, sesebelisoa sa ho kopanya matla sea hlokahala; Taba ea bobeli, e le ho etsa hore mananeo a se ke a kena-kenana, sesebelisoa sa khetho ea maqhubu se bohlokoa. Ho na le mefuta e mengata ea lisebelisoa tsa ho kopanya matla, tseo har'a tsona tse sebelisoang haholo ke 3 dB e kopanyang.

 

Sesebelisoa sa ho khetha khafetsa ke sefe se entsoeng ka li-resonator tse phahameng tsa Q (tse kang axial cavity le waveguide cavity). Tlas'a maemo a itseng, ka ho sebelisa sekhahla se khethehileng sa waveguide, maqhubu a ka khethoa 'me matla a ka etsoa ka nako e le' ngoe.

 

Karolo e 'ngoe ea bohlokoa ea motsoako ke filthara ea bandpass. Sesefa se sebelisoang haholo ho FM ke 1/4 wavelength coaxial resonator.

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Why do You Need An Dummy Load?

In addition to allowing you to accurately adjust the parameters of the transmitter and receiver, the dummy load can also prevent damage to the device caused by misoperation. Professional RF engineers all know that a dummy load is a tool for loading equipment load to test on an amplifier or RF system.

 

If you use the antenna directly instead of any load during the test, not only can you not tune perfectly, the heat generated by RF power will directly damage your transmitter or receiver. The dummy load can be simulated the perfectly tuned antenna connected to the amplifier can avoid improper parameter settings or damage to RF equipment.

 

Ka hona, re khothaletsa ka matla hore o khethe mojaro o tšepahalang oa dummy mme o o sebelise ka nako le ka nepo ha o leka lisebelisoa tsa RF ho qoba tahlehelo e sa hlokahaleng.

How does RF Termination Work?

Ts'ebetsong ea tlhahlobo ea sistimi ea RF, Rack 20kw dummy load (eo hape e tsejoang ka hore ke 20000w dummy antenna) e sebetsa joalo ka "antenna" ea 'nete. E sebelisetsoa ho etsisa mojaro oa sesebelisoa sa motlakase, se kopantsoeng le tlhahiso ea mochine oa seea-le-moea. E ka sebelisoa ho leka le ho lokisa transmitter kapa moamoheli ntle le maqhubu a radio a khantšang. Rak ea 20kw dummy load hangata e na le sehanyetsi se hokahaneng le radiator se ntšang matla a tsoang ho transmitter.

 

The 20000-watt dummy load is used to dissipate RF power. It is characterized by 50 Ω impedance, and the VSWR is not more than 1.20:1. Therefore, due to the low reflection coefficient, it is very useful for :

  • ho lokisoa ha seea-le-moea sa FM le se fetisang seea-le-moea-pono
  • phepelo ea phallo ea filthara ea RF
  • ts'ebetso ea ho qetela ea synthesizer ea matla. 

 

Hlokomela: Lihokelo tsa kantle ho naha bakeng sa letoto lena la lihlahisoa li ka nkeloa sebaka ho tloha ho sehokelo se potlakileng sa mofuta oa n ho ea ho mefuta e meng habonolo.

 

Ha mojaro o buletsoe, phunya lesoba la moea holim'a valve ea ho hema. Ho felisa, ka lebaka la ho eketseha ha mocheso oa dummy, kamore ea mojaro, katoloso e futhumetseng ea moea. Haeba moea o futhumetseng o sa tlosoe ka nako, khatello ka kamoreng e tla eketseha, e le hore khatello ea gasket e phahame haholo, 'me ho tsoa ha oli sebakeng sa ho jara ho tla bakoa. Sebaka se lekaneng (bonyane lisenthimithara tse 12 ho pota-pota le holimo) ho pota-potile mojaro ho lumella ho potoloha ha moea le ho tlosa mocheso habonolo bakeng sa mojaro oa dummy.

 

Kopano ea Fan ea 20KW RF Dummy Load Rack 

 

Ha u tloha fekthering, ho kentsoe mohala oa likarolo tsa fan, 'me wiring e khethehileng ha e hlokehe. Fene e tlameha ho sebetsoa ka letsoho ntle le haeba karolo e hokahane le ts'ebetso ea othomathike fekthering. Haeba fene e sa qalisoa, matla a kentsoeng ho mojaro oa bohata ha a na ho ba holimo ho feta 1250W (e loketseng 5kW le 10kW mojaro o nang le moea o pholileng).

 

The Transmitter Interlock ea Rack 20KW RF Dummy Mojaro

 

Ho na le khokahano lipakeng tsa 1 le 2 pins tsa li-sockets tse tharo tsa mantlha, switch eo ka tloaelo e koetsoeng e sa utloeleng mocheso (cksd301 250V 10A 60 ℃) e hokahane le transmitter. Haeba mocheso o pholileng oa mojaro oa bohata o phahame haholo, mojaro oa bohata o tla senyeha, sesebelisoa sena se tla tima le ho tima transmitter.

 

Tlhokomelo ea 20KW Rack RF Dummy Mojaro

 

Hoo e ka bang ha ho tlhokomelo e hlokahalang, empa hoa hlokahala ho boloka mochine o hloekile ebile o thibela lerōle. Ha ho khothalletsoe ho fetola li-resistors. Leha ho le joalo, ha ho hlokahala, tiisa valve ea ho phefumoloha 'me u behe mochine ka holimo le sehokelo sa RF se shebile holimo.

 

Tlosa li-socket head screws tsa likarolo tse 8 tse tsitsitseng tsa RF. Ka hloko le ka potlako phahamisa kopano e le hore oli e feteletseng e tšeloe ho radiator. Lokolla sekotwana qetellong ea sekoahelo 'me u tlose li-screws tse 6 tsa hlooho tse tapered. Hula sekoahelo ka hloko ho sehanyetsi. Ho kenya sehanyetsi se secha, latela mehato e fapaneng, empa etsa bonnete ba hore sehanyetsi se lumellana hantle le sebopeho ka mokhoa o sireletsehileng.

 

Sheba O-ring pakeng tsa radiator le kopano ea RF. Haeba ho na le petso kapa tšenyo, e tlameha ho nkeloa sebaka hang hang. Ka mor'a ho etsa qeto ea hore kopano e ka har'a radiator, khutlela sebakeng se otlolohileng 'me u hlahlobe ho tsoa ha pholileng.

 

The Suggestions for the Cooling of 20KW RF Dummy Load Rack 

Fekthering, mojaro oa bohata o kenngoa ka mocheso o tloaelehileng, o nang le pholileng e khethehileng e se nang chefo le e sa conductive, 'me e fihla sefofaneng se tloaelehileng. Ela hloko sepholi bakeng sa ho dutla. Palo e nyane ea ho lutla e ke ke ea ama mosebetsi, empa ho lutla ho hoholo, ho tla ba le litlamorao tse mpe. Haeba ho se na boemo, u se ke ua nkela se pholisang sebaka, ka kopo sebelisa se pholisang se fanoeng ke feme ea mantlha. Litšobotsi tse khethehileng tsa motlakase le mocheso o sa feleng oa pholiso li bohlokoa haholo bakeng sa mohanyetsi o tsoelang pele le o tloaelehileng oa ho sebetsa.

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