Bind some key or joystick button for SRS Overlay Toggle -control to show/hide it while playing DCS:
…or use SRS program toggle -button:
SRS Transponder in overlay:
Mission code (Mode 1 or M1):
In military use: Role, mission or aircraft type.
Aircraft identification code (M3):
Add squawk code here.
Toggle transponder on/off:
Button for toggling transponder on and off.
Makes your aircraft to “blossom” on the controllers radar scope. Controller asks you to use this if needed. Text “IDENT” will appear after text “TRANS” in DCS if Ident is on.
3-pulse reply (M4):
Mode 4 on/off button. Encryption or something…
Emergency squawk codes to use:
7700: General emergency
7600: Lost communications