>>314412363
1.0 base stations have three components of a base station pass:
1) modulated sync pulse containing base station info
2) x pass
3) y pass
You can tell because they have two rotors.

2.0 base stations instead encode the timing data into the IR itself, and use fancy lanses to make the elevation instead able to be told by the difference between two tightly spaced pulses. You can tell because it has one rotor, and the two sets of dim red vertical lines change spacing depending on elevation angle to the base station.

They're perfectly fine for FBT, I know anons with 1.0s that do FBT.