Hi Ingo sm5ajv at qrq.se a écrit : > It looks that the problem is occuring when Heading is 180 and > not for other headings. Maybe this is a minor bug? Good catch ;-) Actually, the cause was the 0 value for the LP. Fixed in our dvpt trunk. The next nightly build (tomorrow morning UTC) should be OK. 73 Larry - F6FVY