WS International Wholesale Distributor of Satellite Telecommunications Equipment | Free To Air / FTA, Receivers, Dish, Satellite Dish Antennas, DiSEqC Switches, DiSEC Motors, C & Ku Band LNB & LNBFs, and much much more.....



Atlanta Branch:


Los Angeles Branch:



+1 770-420-5272


+1 818-485-8350

All WS International Brand Equipment Carry A



Tour Our China Office & Factory


Satellite Receivers



- Omegasat DSB6000U

- Omegasat DSB-5701

- Omegasat DSB-5700

- 16GB USB Flash Drive


Remotes & Extenders

- Wireless Extender

- Omegasat DSB5700

- Omegasat DSB5701




- ESX521FE Single LNBF

- Blue Blazer Ku LNBF

- ESX521UFE Single LNBF

- ESX521U-AM Monoblock

- ESX522FE Dual LNBF

- ESX522UFE Dual U. LNBF

- 521 Single LNBF

- 522 Dual LNBF

- 524U Quad LNBF

- ESX5421 Monoblock

- 741 CKU LNBF


- LKU1-2A Universal

- Chaparral Single LNB

- Stealth Bullet U1


- Star Bracket


C Band

- ESX211 C Band LNB

- ESX244 C Band LNBF

- ESX242 C Band LNBF

- ESX241 C Band LNBF

- 241 C Band LNBF

- 242 C Band LNBF
- 741 CKU LNBF

- NS741 C/Ku LNBF

- NS741U C/Ku LNBF

- WSKU2C Conical Scalar


Satellite Dishes

- WS7630 - 75cm Ku

- DS2076 - 76cm Ku

- WS9036 - 90cm Ku

- WS1247 - 120cm 

- WS1247M - 1.2m

- WS1870P - 6ft

- WS1870 - 1.8mts

- WS24095 - 240cm

- WSKU2C Conical Scalar

- WS40MM-P Clamp

LNBF Holders & Brackets





- R4-DTV


- WSKU2C Kit

- STAR Bracket


Motors & Controllers

- VBox-X Positioner
- SG-9120 HH Motor
- SG-9120B HH Motor
- PMA24 36V Actuator
- SG-6000 HH Motor


RS232 Cables

- RS232 Cables NM

- RS232 Cable Serial


Satellite Switches

- 22KHz Switch

- 4X1 DiSEqC Switch

- 4X1 DiSEqC With HD

- 2X1 DiSEqC Switch

- 3X4 Multi-Switch

- Diplexers


Satellite Installation

- FastAlignŽ 5100Pro

- FastAlignŽ 7100Pro

- DIY Install Kit

- Installation Tools

- SF95 Satellite Finder

- SF110+C Sat Finder

- DSF120+ Finder

- SF99 Finder Kit

-Sat Finder Battery Holder

-Installation Supplies


Satellite Meters & Finders

- FastAlignŽ 5100Pro

- FastAlignŽ 5110Pro

- FastAlignŽ 6100Mini

- FastAlignŽ 7100Pro

- SF95 Satellite Finder

- SF110+C Sat Finder

- DSF120+ Finder

- SF99 Finder Kit
-Sat Finder Battery Holder



Are you a broadcaster and need to get equipment to your viewers, affiliates, engineers, or resellers?  Contact WS International for our broadcasters program.  WS International pioneered the broadcaster program in the satellite industry.  Contact us for full detailed information and to see how we can help you with your needs.

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WS International ESX5421U FSS Single Universal 4° Monoblock

DMX5421 Universal Monoblock

Model# ESX5421U Universal 4-degree Monoblock 


Looking to get signal from satellites that are 4-degrees or more?

Check out our brand new ESX521U-AM 4-12 degrees adjustable monoblock LNBF!



Receive signal from any of this satellite combination with

our popular WS9036 90cm Dish!!!


79°W & 83°W

83°W & 87°W

85°W & 89°W
°W & 91°W

89°W & 93°W

91°W & 95°W
°W & 97°W

95°W & 99°W

97°W & 101°W

101°W & 105°W

107°W & 111°W

113°W & 116.8°W

123°W & 127°W

7°W & 11°W

11°W & 15°W

4.8°E - 9°E

16°E - 19.2°E

19.2°E - 23.5°E

21.6°E - 26°E

40°E - 36°E


WS International is the original manufacturer of the ESX5421U Ku band LNBF


Want to get signal from two satellites that are more than 4° apart using the same satellite dish without using flimsy & un-reliable brackets? 

 2.  You can use one of our ESX521U-AM 4° to 12° adjustable monoblock to get signal from any two Ku band satellites that are within 4° to 12° apart!


If you want the best, Rely On WS!

Technical Specifications

Input Frequency Range

10.70 - 12.75 GHz

L.O. Frequency

Low: 9750MHz

High: 10600MHz

L.O. Stability

1 MHz (-40 - +70° c)

Degree Spacing 4°

Output Frequency Range

950 - 2150 MHz


0.4 dB typical

Conversion Gain

60 dB typical

Input VSWR


Output VSWR

2.0:1 (max)


F Type female


75 ohm typical

Cross Polar Isolation

>25dB (min.)

Image Rejection

45 dB (min.)

Phase Noise

-50dBc @ 1 KHz

-75dBc @ 10 KHz

-95dBc @ 100KHz

Supply Voltage

11.5 - 14.0V = Vertical Polarization

15.5 - 19.0V = Horizontal Polarization

Operating Temperature

-40 - +70 degrees Celsius

Storage Temperature

-40 - +80 degrees Celsius

Relative Humidity

0 - 95 %

Throat Diameter


The ESX5421U is a high stability single LNB that allows reception of Ku band signals with the highest possible signal level and quality.  Fits any standard Ku band satellite dish with a 40mm or 22mm universal LNBF mount.  Use this with your Free To Air receiver with DiSEqC control for excellent and superior Ku band reception from two satellite between 4° and 4.3° apart.  View any of this combination:


The WS International  line of C band, Ku band & CKU band LNB and LNBFs are the newest and best developed line of satellite LNB & LNBFs in the world.  They have been tested and developed under strict German engineering group's specification & supervision, along with the long experience of WS International's concern of the needs of it's customers  built in 1 great performing LNB.  We have designed this line to meet the needs of our customers: TV & radio stations, cable operators, & broadcasters, so it ensures the best quality reception and will continue to work excellent in tough weather conditions and climates.  The WS International  line of LNB and LNBF's are backed by WS International 100% and have been torture tested to withstand punishment.  Where all other brands fail, everybody turns to WS International to lead and passes with flying colors.   


This line is sure to quickly become  upon the favorite brand and model among network & cable TV engineers, operators, and hobbyist.  If you have tried other WS International brand products and have been impressed, the new  line is not any different. 


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WS International is a Wholesale Supplier and Distributer of DTH (Direct To Home) FTA, MPEGII, and DVB Equipment - WS International Blog

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