Single Copter - Servo output pins

Good morning

I set my motor at the output pin 6 , set the frequency of the ESC to 80 , worked perfectly , did the same in the servo motor, on the output pin 1 , set the FREQUENCY to 50hz , but does not respond , you are connected to a BEC external supply to pin 5 + v , ground , only the wire pin in NAVIO2 . what am I doing wrong.