Andrej, lets work it out…
In B50 bugs can be set to anything between 0 and 30.
From B50 manual:
BUGS % = sailplane performance is degraded by bugs or rain on the wings which changes the polar and hence makes the netto/relative netto and speed command inaccurate. The bugs control may be adjusted to reflect the degradation in best L/D up to a maximum 30% degradation.
Let’s take one point from an imaginary polar e.g. at 60 kts with clean wings and bugs set to 0% the polar shows 120 feet per minute sink. If I have a dirty wing and I set bugs to 10% I will degrade my polar by 10% and this means at 60 kts the sink will be 132 feet per minute. If I set my bugs to 20% then at 60 kts the sink will be 144 feet per minute.
I never asked to send bugs to B50 since B50 can not accept bugs send by other hardware. I want to send bugs from B50 to SeeYou mobile.
From B50 manual:
$PBB50,AAA,BBB.B,C.C,DDDDD,EE,F.FF,G,HH*CHK crlf
AAA = TAS 0 to 150 knots
BBB.B = Vario, -10 to +15 knots, negative sign for sink
C.C = Macready 0 to 8.0 knots
DDDDD = IAS squared 0 to 22500
EE = bugs degradation, 0 = clean to 30 %
F.FF = Ballast 1.00 to 1.60
G = 0 in climb, 1 in cruise
HH = Outside airtemp in degrees celcius ( may have leading negative sign )
CHK = standard NMEA checksum
crlf = standard NMEA sentence delimiter
$PBSER, xxxx (4 digit serial number unique to every DDM)*CHK The commas are important.
By the way are you using True airspeed from B50 to calculate wind component in a straight flight?
Andrej, are you interested in getting the interface to B50 working? I have time I can wait but I would like to know if something is going to come out of this?
SeeYou Mobile 
