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0xCoto / Virgo

📡 Virgo: A Versatile Spectrometer for Radio Astronomy
https://virgo.readthedocs.io/en/latest/
GNU General Public License v3.0
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Determining Gain #21

Open kevinawilson opened 3 years ago

kevinawilson commented 3 years ago

The obs_parameters ask for 'rf_gain', if_gain, and bb_gain. How are these three determined? Is the RF gain the gain attributed to the LNA? What determines the other two numbers?

0xCoto commented 3 years ago

This adjusts the corresponding RF, IF and BB gain on the OsmoSDR Source block in GNU Radio. Some of these may not be applicable to certain SDR devices, but what each gain parameter does depends on the SDR model being used.