HI Mush. Make sure you are using the new heights to measure range by. They are marked in red in the recognition manual and do not measure mast head height anymore--most measure the stack height instead. I missed that when I first fired up the new RFB version and my ranges weren't even in the same ocean.
Peto
edit: looks like I waited a little too long to hit reply
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If your target has a 30 degree AOB, the range from his base course line equals the current range divided by 2.
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