[TenTec] Corsair II RF Gain

[Straate]

Is there anyone out there who has a Corsair II that can give me some information.  I am looking for the setting on the RF Gain control when the signal disappears.  If you are looking at the control from the front, what is the setting on the scale does the signal disappears?  The control is wide open at the 10 position and then you rotate counter-clockwise to reduce the gain.  Appreciate some feedback.