A spectrum analyzer will be needed throughout the testing to aid setup and debugging. After connecting your spectrum analyzer to your VSAT setup, point to a reference GEO satellite and verify the received power levels are within the expected specifications of your setup (antenna type/size and line losses).
Kepler will provide the carrier frequency that you should expect to see on your spectrum analyzer, as well as the bandwidth. In addition to the broadband carrier, the Kepler satellites will also emit a narrowband beacon signal which is easier to identify and track. This beacon will be approximately 300 MHz lower than the carrier frequency. For example, if the downlink carrier is at 12.0 GHz, the beacon will be 11.7 GHz.
Set your spectrum analyzer to be able to view the intermediate frequency (IF) of both the beacon and carrier signals. This is equal to:
(TX Frequency) - (LO Frequency) = IF Frequency
For example, if you are to receive the carrier at 12.0GHz with a LO at 10.8GHz, your spectrum analyzer should be set to cover:
Carrier = 12.0 - 10.8 GHz = 1.2 GHz
Beacon = (12.0 - 0.3) - 10.8 GHz = 900 MHz
Configure your spectrum analyzer for Max Hold.