  SILENT EMERGENCY


  This option Enables/Disables Silent Emergency.  If enabled this option
  allows the total anonymity of the Emergency user by muting the receive
  audio for the entire data transmission sequence.  This will ensure that the
  audio remains muted for the base's Emergency acknowledge packet or any
  other modulated transmissions during the interpacket delay.  This option
  may not be selected simultaneously with Emergency Sidetones.  The radio
  remains in this mode(no receive audio) until it has been cancelled by PTT.
