Here is an overview of a representative example 4 day course: run by "e-Enhancement Centre", Nairobi, Kenya:
These courses offer both theoretical and practical skills transfer as applicable to SCPC, TDM, TDMA etc, for VSAT field engineers, support engineers and operational managers.
Introduction to satellites and satellite theory
Details of the Components of a satellite
Brief History of satellites communication
Different types of Satellite orbits
Satellite Types with focus on Communication satellites
Radio Frequency Spectrum with focus on Satellite frequencies ( L band, Ku band, C band)
Definition of Satellite footprints
Types of Satellite beams
Introduction to RF basics
Introduction to VSAT
Advantages and disadvantages of VSATs
Comparison of VSAT with other terrestrial links
VSAT Frequency bands in details
Details of VSAT components-BUC, LNB, Teleport, NOC, Transponder details, Antennas,
Practical demonstration of components of the assembly: Block UP Converters
(BUC), Low Noise Blocker (LNB), Feed horn, OMT (Orthomode Transducer)
Types of Access Methods - Dedicated Vs Shared
Dedicated methods - SCPC
Need for frequency optimization
PAMA & DAMA
Shared Access - FDMA
Shared Access - TDMA
Shared Access - CDMA
VSAT carriers- upstream downstream
Link Parameters - Data rate. Modulation, FEC & Reed Solomon
Bit rate and Symbol rate
Definition and relationship between BER & Eb/No
Definition and differentiation if a CW & Modulation carrier
Types of VSAT Networks:
Value of the satellite system
Data communication basics
Data communication Protocols in brief
Types of VSAT data traffic
Quality of Service (QOS) in VSAT links
Types of Modems and their uses.
Show the class different kind of VSAT modems & perform modem configuration
Terminologies with respect to Antennas eg Gain, Patterns, Beanwidth, lobes etc
Antenna Types and Operating principles
Antenna classes as approved by Satellite operators.
Types of mounts that support VSATs
Antenna and Feed Systems: Tx/Rx, Dual Rx, RO
Theory of Wave Polarization.
Launching Linearly Polarized Waves
Matching TX and RX Antenna Orientations
Cross-Polarized Signals and XPD
Pol Frequency Re-use and Cross-Pol Transponders
Linear and Circular Polarization
Types of cables and their Suitability: RG6, RG11, RG213 etc
Types of connectors and their Suitabilty.
Tools used in terminating cables/crimping tools.
Preview of Large Earth Station Equipment.
Typical block Diagrams of VSAT systems.
Undertaking a Site Survey.
Filling out a Site Survey Report.
VSAT Installation Concepts:
VSAT pointing variables:
AZ-EL Beam Movement Across the Arc
Tools & Equipment used when pointing at site:
Commissioning i.e Carrier Lineup and Cross-Pol Checks.
Common Faults and problems: Site faults, Interference, losses due to weather.
Use of a Spectrum Analyzer to view the satellite spectrum and in troubleshooting.
Mention other types of VSATs other than Fixed VSATs.
Feed Assembly, Mount Assembly, reflector Assembly
Antenna Pointing using Satellite modem.
Antenna pointing using a Spectrum analyzer
Antenna pointing using a Field Strength Meter (FSM).
Checking site receive levels: EbNo, BER, SNR
Due to the practical nature of the course, we have limited spaces available
and they will be offered on a first-come-first-served basis.
Ask when is the next course, what will it include, prices and registration form.
The e-Enhancement Centre
Westlands Commercial Centre,
Ring Road, Westlands
+254 722 800810
Application/registration form: https://www.satsig.net/training/VSAT-training-10-14-April-2023-Registration-Form.pdf
Last year we have been putting lot of efforts, and after long time, we have brought to the air our own on-line VSAT training portal, to be used by our engineers. We are very satisfied with the
result, and we will keep improving it.
Now, we are taking another step forward in the same direction, and I will be travelling to Dakar to provide a 4 days theoretical and hands-on training.
The cost of the training is reduced if you are registered engineer with Oasis Networks.
The training is suitable for field engineers that already have some experience with VSAT. We will cover some theoretical aspects, going from the basics of electromagnetic waves to practical aspects of our work on the field.
Certifications of Oasis will be granted as well for the engineers who will pass the exams along the training session.
Anyone interested, please contact me to secure your seat.
Afrikanet Oxford Consultech UK Ltd. offer GVF certified courses all over Africa at subsidized prices.
See their GVF training courses brochure (295k pdf file - worth reading) for more information about the different courses offered.
For a class of at least 5 students, a discount of 20 percent is offered.
Philip Walters A. Tanyi
Head of Afrikanet Academy
Afrikanet Oxford Consultech UK Ltd
Oxford Culham Innovation Center
Science Centre Culham- Building D5
Abingdon - OX14 3DB
Tel: +44 1865 920490
Tel: +001 443 333 1204
If you know of other GVF/VSAT training available, please tell me and I can add brief details here. Best regards, Eric. email@example.com
► Page created 16 May 2005, last amended 22 Aug 2023.
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