+x tnowak - 2/14/2019 8:27:09 AMMarcusM is just stating that there is no way to meaningfully differentiate between:1. A high power Mode C transponder transmission from a CAT aircraft, say 50 miles away2. A low power Mode C transponder transmission from a GA aircraft that may be just 1-2 miles away.Yes, you can filter transponder returns by altitude but if you are flying in a busy environment it could be confusing/misleading as to what the true threat is.Tony
+x neilmurg - 2/14/2019 6:08:34 PMNo way? Is that a conclusion after analysing the PAw algorithm?For instance, how quickly could the strength of a signal from 200 miles away change, aircraft doing 140-250kn, vs a signal from 5 miles away @120kn?