> Even if an aircraft isn't broadcasting its own position via ADS-B, if it's using Mode S its position can be multilaterated if you have a cooperating network o

> Even if an aircraft isn't broadcasting its own position via ADS-B, if it's using Mode S its position can be multilaterated if you have a cooperating network of receivers (which is what FR24, ADS-B Exchange, etc. have). I am a total noob in this area (and in general) but from my cursory understanding of Mode S, you would still have to have an active transponder on the aircraft. Wouldn't a military aircraft that wants to hide it's location not output any radio signals (except narrowband directed signals if those are practical?).