A military fire control / search radar is total oblivious to other radar system. On the other hand the US military and US homeland security have systems that can identify both opposition and civil radar equipment by make and model. Within limitation if your WXR beam is pointed up at the cloud tops, insufficient signal will be available on the ground to id the system. On the other hand all US military air defense system have IFF (identify fried or foe) The can read your Mode C/A and S data. But - an enemy aircraft could transmit a Mode C 1200 code. and get shot down as could any one else not sending encrypted IFF 'friend' code.
Last edited by harpf; 6th Aug 2017 at 03:04.
Reason: Typo