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+====== RFC: rtl_eeprom content ======
+When using multiple rtl-sdrs at once, it is tricky to see which device ID belongs to which device. The cheapest units from China have all serial number set to "1".
+I have handwritten an unique letter to each of my rtl-sdr and then programmed custom product string:
+rtl_eeprom -s jenda_F_-25
+I hope this contains all information needed - owner, ID and PPM value. This can be easily parsed automatically and e.g. the signal can be automatically adjusted according to the PPM offset.