[Bosje]

ahhhh that explains a lot, Joe

yeah that seems to be the problem, the notepad is littered with crappy values and i tick the notepad when i select the tube
so thats wrong...

You're saying I do the plotting and information gathering beforehand, zero the periscope and set the TDC MANUALLY to the aob which it will be at 0 and the speed.

my own position should remain as fixed as possible and then i ONLY set identification values and range into the notepad. then, as i tick the notepad it will update for the range but the aob and speed will be those which i inputted manually (the aob automatically recalculated as the scope swings around

correct?

edit: danlise, i did that several times and they seemed to sort of match but I'm now trying to understand how the tdc actually works together with the notepad. which values are tracked and calculated automatically, which values remain fixed.