Flew over to Alderney and back yesterday with Mode-C enabled. I have the hex code of the aircraft entered. Using Skydemon in the past it’s always removed the Mode-S aircraft hovering next to me (my aircraft), however on at least 6 occasions it showed my aircrafts registration, Mode-C and anything from -1.1 to -4.5 with the circle being green, orange, or red. Surely if it was my aircraft and the hex code was entered it shouldn’t be picking me up, and having such large variances in separation?
Thanks