Hi Mat,
From the track file G-SLNT is definitely in there, and would have been sent to SD, here are some records
$PALOG,20190901,093434,PAWRT,401292,0,A,0,C,0,S,0,ES,1,P,0,F,0,U,0,M,00,valid,00,vers,00,nacp,00,nica,00,sil,00,sils,*78
$PFLAA,3,-3,9,-7,1,401292!G-SLNT,0,0.0,0,0.0,8*33
$PFLAA,3,-5,9,-7,1,401292!G-SLNT,0,0.0,0,0.0,8*35
$PFLAA,3,-5,9,-8,1,401292!G-SLNT,0,0.0,0,0.0,8*3A
$PFLAA,3,-5,9,-8,1,401292!G-SLNT,0,0.0,0,0.0,8*3A
The first line is critical, it says we received PilotAware - but no transponder
now, we have seen that when very close together, there can be saturation of the RF - this is a possibility
*edit*, no I doubt this, I see you were upto 5km apart at times.
are all the transponders involved of the same type ?
thx
Lee