Originally Posted by
VinRouge
plus you can switch off ADSB all you want. You can still MLAT triangulate off of mode C/S as other websites do with an unredacted feed.
That's not true, sadly.
Because all Mode C transmissions look/sound the same, it is not possible to MLAT using them.
Mode S carries (what ought to be) an airframe specific code, which differentiates between Mode S transponders, and is tied to a Registration/Callsign as well as showing a mission specific callsign if entered.