B737 NG Systems Review
Display Selector
ADF Panel Gables 7403 Series
No Q and A available for this module
No expanded information available for this module
Aft Electronic Panel 700/800/900
Mode Selector Switch

ADF –
  • Audio reception is possible
  • ADF bearing sent to the DUs and the standby radio
    magnetic indicator.
ANT –
  • Audio reception optimized.
  • No ADF bearing data is available.

OFF – removes power from selected receiver.



  • DU ADF indications:






  • Standby radio magnetic indicator:
  • Show ADF fail flag and ADF bearing pointer goes out of
    view.
  • ADF fail flag goes out of view and ADF bearing pointer
    remains out of view.
  • ADF bearing pointer slews to 135 degrees relative bearing.
  • Shows ADF fail flag.
  • ADF fail flag goes out of view and ADF bearing pointer
    stays at its last position before test.
  • ADF bearing pointer slews to 135 degrees relative bearing.
TEST – Tests related ADF bearing pointers and warning flags on  
the DUs and the standby radio magnetic indicator.