22-Take the keycard.
71-Connect the cable.
72-Tap the radio (Tracklist says 4-Crow).
A-Change to channel 4 with A button. (4-Crow).
Press Play
73-Adjust frequency to CROW 130-135 HZ.
74-Read the wave on the oscilloscope from the left side.
First number is 2.
Second number is 5.
Third number is 4.
Fourth number is 6.
Code is 2546.
75-Go to Laboratory Entrance – Stairs – End.