This lesson covers the calculation of power requirements for Very Small Aperture Terminal (VSAT) communication via satellite. It explains the process of determining the received antenna gain, the G/T ratio, and the losses in uplink and downlink. The lesson also discusses the calculation of the Carrier-to-Noise ratio and the Effective Isotropic Radiated Power (EIRP) from the satellite. It further explores the concept of EIRP of VSAT and how to calculate the VSAT transmitted power amplifier out. The lesson concludes with a discussion on different types of VSATs and Y factor method for measuring noise temperature.

- The power requirements for VSAT communication are calculated based on factors such as received antenna gain, G/T ratio, and losses in uplink and downlink.
- The Carrier-to-Noise ratio and the Effective Isotropic Radiated Power (EIRP) from the satellite are crucial in these calculations.
- The EIRP of VSAT can be determined by considering the EIRP of the satellite, the satellite gain, and the uplink losses.
- Different types of VSATs, such as receive-only, transmit-receive via Hub, and transmit-receive not via Hub, have different power requirements.
- The measurement of G/T, a key parameter in these calculations, can be done through direct, indirect, or comparison methods.

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