"BHelman" wrote:
My experience with the trafficscope continues to be range within .03
NM of what ATC tells me and relative altitude being dead on.

All these "passive" devices rely upon received signal strength to
compute distance. Due to wide variability in what actually comes out
of the xponder antenna of general aviation aircraft, consistent .03 NM
accuracy, or even .3 NM, is physically impossible. ATC does not give
me advisories to 2 decimal places either; something new where you fly?
:-)

Fred F.