Originally Posted by
OVERTALK
TCAS R/T: means the TCAS verbal directives?
Both DME? Where does DME come into it?
TCAS, transponders, and DME use frequencies which are very near to each other, in the 960 to 1240 MHz range, thus the suppression signal is used to avoid having the other onboard receivers on the same band being "blinded" by the radiofrequency burst emitted by the unit which is transmitting.
Ciao, Luca