Group: Forum Members
Difficult to answer your question definitively as to the reason without more details.
You say you are running PilotAware. Presumably with ‘Mode C/S Select’ enabled in the Configure Setup and ‘Show Bearingless Traffic’ enabled in SkyDemon Navigation - Yes?
Are you also running a transponder? If so the ring will be generated by your own transponder unless you have selected Mode C/S + Filter in PAW Configure.
If not running a transponder, but have Mode C/S Selected, you should be seeing warning rings progressing from large green, through medium amber to small red as other transponder equipped aircraft approach (and the risk increases). You can tell if they are Mode C or Mode S by the text at the 12 o’clock position on the ring which will show an aircraft Reg if Mode S or simply ‘Mode ‘C’, plus in each case the current relative altitude. If you are ONLY seeing small red rings, these are either generated by your own transponder or by Mode S from high power commercial traffic (probably at high altitude).