The above educational contribution to this forum is welcome.

This page was taking many seconds to load (significantly more than 2.5 seconds) for actual users "in the field"  (this means real visitors and not just people like me in a test environment with fast broadband internet access.  People in remote areas often have have slow 3G or 4G access.

I have edited the image and text (slightly) to improve matters.

When tested now, this page takes 2.30 sec for simulated slow 4G connection, which is just within the 2.5 sec pass/fail field user limit applied by Google search.

Hope that helps.

Best regards, Eric.

Visitors to this satsig website might also be interested in reading my Introductory explanation of Very Small Aperture (VSAT) terminals

A VSAT (Very Small Aperture Terminal) system is a satellite communication system that allows users in remote or underserved areas to send and receive data through satellites. It is widely used for internet access, television broadcasting, maritime communication, and enterprise networks.

1. What Is a VSAT System?
A VSAT system consists of a small satellite ground station with a dish antenna that communicates with a satellite in orbit. The satellite then relays the signal to a central hub station connected to the internet or a private network.

Typical VSAT dish sizes range from 0.75 m to 3.8 m in diameter.

2. Main Components of a VSAT System
1️⃣ Satellite Dish (Parabolic Antenna)
The parabolic antenna collects and focuses radio signals to a feed horn located at the focal point of the dish.
It is responsible for transmitting signals to the satellite and receiving signals from it.

2️⃣ Feed System
The feed system includes components such as:

Feed horn
Orthomode transducer (OMT)
Waveguide
These components guide the RF signals between the antenna and the radio equipment.

3️⃣ BUC (Block Upconverter)
The BUC converts low-frequency signals from the modem into high-frequency signals that can be transmitted to the satellite.

4️⃣ LNB (Low Noise Block Downconverter)
The LNB receives signals from the satellite and converts them into lower frequencies so the modem can process them.

5️⃣ Satellite Modem
The modem connects the VSAT system to local devices such as routers, computers, or network switches.
It converts digital data into radio signals and vice versa.



3. How a VSAT System Transmits Data
The communication process typically works like this:

1️⃣ A user sends data (for example, an internet request).
2️⃣ The satellite modem converts the data into an RF signal.
3️⃣ The BUC amplifies and converts the signal to a higher frequency.
4️⃣ The parabolic antenna transmits the signal to the satellite.
5️⃣ The satellite relays the signal back to a hub station on Earth.
6️⃣ The hub station connects the request to the internet or a private network.
7️⃣ The response travels back through the satellite to the VSAT terminal.

This process happens in just a few milliseconds.



4. VSAT Network Topologies
Star Topology ⭐
All VSAT terminals communicate through a central hub station.

Advantages:

Easier network management
Lower equipment cost at remote sites
Common for:

Internet service providers
Enterprise networks
Mesh Topology 🔗
VSAT terminals communicate directly with each other through the satellite without a central hub.

Advantages:

Faster communication between remote sites
Ideal for corporate private networks



6. Common Applications of VSAT
VSAT systems are widely used in:

Remote internet access
Oil and gas fields
Maritime communication
Military communication
Disaster recovery networks
Television broadcasting
✅ Conclusion
A VSAT system works by transmitting data between a ground terminal and a satellite in orbit. By using a parabolic antenna and specialized RF equipment, VSAT networks can provide reliable communication even in areas where fiber or cellular networks are unavailable.

Antesky is a professional manufacturer of satellite communication antennas and ground station equipment. We specialize in the design and production of high-performance VSAT antennas, transportable antennas, and large earth station antennas for global satellite communication applications.

If you are looking for reliable satellite antenna solutions, feel free to contact us.

Website: www.antesky.com
Email: sales@antesky.com

Choosing the correct satellite antenna size is one of the most important decisions when designing or installing a satellite communication system. The antenna size directly affects signal strength, communication reliability, and overall system performance. Whether you are building a teleport, deploying a VSAT network, or setting up an earth station, understanding how antenna size influences performance will help you select the right equipment for your project.

1. Why Antenna Size Matters
The size of a satellite antenna determines its gain, which is the antenna’s ability to focus radio signals in a particular direction. Larger antennas have higher gain because they collect and concentrate more energy from the satellite signal.

Higher gain provides several advantages:

Stronger signal reception
Improved link reliability
Lower interference from nearby satellites
Better resistance to weather effects
In satellite communication systems, especially those using geostationary satellites, signal levels can be relatively weak. Therefore, selecting an appropriately sized antenna ensures that the communication link remains stable and efficient.

2. Common Satellite Antenna Sizes
Satellite communication systems typically use parabolic dish antennas in a variety of sizes. The most common antenna sizes include:

1.2 m – 1.8 m antennas
These are usually used for small VSAT networks and enterprise communications. They are suitable for Ku band applications and locations where signal coverage is strong.


2.4 m – 3.7 m antennas
These medium-size antennas are widely used in professional communication systems, including broadcast uplinks and medium earth stations.


5 m – 7.3 m antennas
Larger antennas provide higher gain and are commonly used in teleport facilities, satellite gateways, and critical communication infrastructure.


For example, many earth station systems use antennas such as the 3.7m C
Band Antenna or the 7.3m Earth Station Antenna to achieve higher signal performance.

3. Frequency Band Considerations
The operating frequency band of the satellite system also plays an important role in antenna size selection. Different frequency bands require different antenna sizes to achieve the same level of gain.

For instance:

Systems using C Band typically require larger antennas because the signal wavelength is longer.
Systems operating in Ku Band can use smaller antennas while still achieving sufficient gain.
High-frequency systems using Ka Band often use even smaller antennas due to the shorter wavelengths.
However, higher frequency bands are generally more sensitive to rain attenuation, which may require careful link budget planning.

4. Link Budget Requirements
Another critical factor when choosing antenna size is the link budget, which is the calculation of signal strength throughout the communication link.

A typical link budget considers:

Satellite EIRP
Antenna gain
Path loss
Atmospheric attenuation
Receiver sensitivity
If the link budget shows that additional signal margin is needed, increasing the antenna size is often the most effective solution. Larger antennas improve both transmit and receive gain, which helps maintain a stable communication link even during adverse weather conditions.

5. Installation Environment
The physical environment where the antenna will be installed also affects antenna size selection.

Key factors include:

Available installation space
Wind load and structural support
Local regulations
Maintenance accessibility
For example, large antennas used in teleport facilities require solid foundations and structural support to withstand strong winds. In contrast, smaller antennas used in VSAT systems are easier to install and maintain.

6. Application Requirements
Different applications have different antenna requirements.

Typical examples include:

Teleport stations
Broadcast uplink facilities
Enterprise VSAT networks
Government or military communication systems
Maritime satellite communications
High-capacity and mission-critical applications generally require larger antennas to ensure maximum reliability.


Conclusion
Selecting the right satellite antenna size requires careful consideration of several factors, including frequency band, link budget requirements, application type, and installation conditions. While smaller antennas may be suitable for simple VSAT deployments, larger antennas provide higher gain, better signal quality, and improved communication reliability.

By evaluating your system requirements and working with experienced antenna manufacturers, you can choose the antenna size that delivers the optimal balance between performance, cost, and installation practicality. Proper antenna selection is essential for building a robust and efficient satellite communication network.

Whether the application involves enterprise VSAT networks, broadcast uplink stations, or government and emergency communication systems, working with an experienced and reliable supplier can make a significant difference in overall system performance. Companies such as Antesky have long been focused on satellite communication antenna systems and related engineering solutions, offering customized designs and technical support tailored to different operational scenarios. This helps ensure stable and efficient connectivity even in demanding environments. If you would like to learn more or discuss a specific project, you can contact us at sales@antesky.com for professional support and tailored solutions.

Have a look here:
https://horizonmeters.webnode.co.uk/satellite/
for a variety of Horizon satellite signal meters. For the Minisat version scroll down the page.
The same kit is often available on ebay. 
Try Amazon also; search for "horizon satellite meter"

Visitors to this forum are very welcome to include images in their messages, using this example format:

Code:

[img]https://yourwebsitename/filename.jpg[/img] 

Important note: Many visitors use mobile phone type devices and slow 4G connections.

This means they will get a disappointing and poor impression of your message if the file sizes of the images is too large.

A recent example had images totalling more than 1 Mbyte and took over 10 seconds to load. This is not acceptable.

Please note that in such blatant cases I download the relevant image and resave it using better compression. In the above case page load time on a slow 4G connection was reduced to under 2 seconds, which is acceptable.

If possible, please try to get your images no more than 750 pixels wide and compressed to well under 20k bytes per image.

The allowed image file types are: jpg gif png JPG PNG GIF

I will be trying to get webp image file type to work by modifying the software that runs this forum.

Best regards and welcome again to forum posters!.  Eric.

21 April 2026:  Modified to 768 pixels wide. The key thing is to get the total page download time under 2.5 seconds for a real 'field' user, and not just fast for a test environment or someone with fast internet access. The 'field users' of this web site tend to be people in remote locations with slow internet access. Google appears to be recording these times and when some pages take in excess of 20 second to download the aggregate average for all forum pages for all 'field' measurements tends to go above 2.5 seconds leading to Google lowering the search results for the many satsig forum pages.

21 April: 982 forum pages are presently deemed inacceptable so I have my work cut out reducing user-inputtedimages file sizes.

We have following SSPA in Standard Ku-Band available for sale in used condition.
Solid State Power Amplifier (SSPA) – 100W Satellite BUC.
Model: SPKM14100N-7
Quantity = 02 Units are available.
Frequency = Standard Ku-Band (14.0 GHz to 14.5 GHz).
Brand = Vertex RSI.
Condition = In Good working condition. (Used)
Contact # netvsat55@gmail.com.

Hi everyone,

I’ve noticed that SatLex has been mentioned and linked here in this community quite a few times in the past, which I truly appreciate. Today, I’m excited to share some big news with you directly.

After nearly five months of intense work on the code and logic, SatLex® has received a complete redesign:

satlex.net

What has changed?
Besides the modern look and improved mobile experience, I’ve sharpened the focus of the platform. SatLex is now concentrating exclusively on what it does best: the calculation tools. To make the project sustainable for the future and to maintain the high precision you expect, I had to make the difficult decision to retire the old image gallery. This allows me to keep the core tools updated and technically rock-solid.

To the veterans and newcomers alike:
Satellite technology has changed tremendously since I started this project in the early 90s. Whether you’ve been using these tools since the days of analog "hunting" (DX) or you just discovered them today for a modern 4K setup — I’m very curious to hear your feedback. I hope the calculators remain as helpful to you as they were intended to be from day one.

Thank you for the support over all these years!

Best regards,
Chris a.k.a. TriaxMan

Expanding Connectivity Across Africa!

At JIMTOP NIGERIA LTD we are proud to have successfully sold and installed VSAT equipment in multiple countries across the continent, including:
Bangui, Cameroon, Chad, Central African Republic, Cape Verde, Niger, Burkina Faso, Ivory Coast, Benin, Liberia, Ghana, Gambia, Guinea, Guinea-Bissau, Senegal, Sudan, Togo, Mali, Mauritania, and Malawi.

From West Africa to Central and beyond, our team delivers reliable satellite communication solutions wherever connectivity is needed.

Partner with us for trusted, efficient, and wide-reaching VSAT equipment and installations.
📡 Bridging the digital gap, one country at a time!



Location : Lagos State, Nigeria.

Vsat Sales & Technical Support @ Jimtop !

+2347060931970 / +2348095959596

tope@jimtop.net and sales@jimtop.net
www.jimtop.net

JIMTOP Nigeria Limited
Telecommunication Infrastructure Solutions
Built for Strength, Reliability & Longevity

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🔹 Our Infrastructure
- Masts, Towers & Monopoles
- Hot-dip galvanized after fabrication for years of corrosion-free use
- Fabricated in compliance with NCC standards

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📐 Engineering & Design Services
- Structure and foundation design services
- Approved engineering documents provided
- Certified engineers registered to work in any state in Nigeria
- Tailored solutions for telecom, broadcast, and internet expansion

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✅ Why Choose JIMTOP?
- Reliable : Proven track record across Africa
- Strong : Built to withstand wind, altitude, and heavy loading
- Affordable : Cost-effective solutions without compromising quality

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📞 Sales & Technical Support
- Phone: +2347060931970 / +2348095959596
- Email: tope@jimtop.net | sales@jimtop.net
- Website: www.jimtop.net