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ADF Panel Gables 7403 Series
Mode Selector Switch

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

OFF – removes power from the selected receiver.



  • DU (Display Unit) ADF indications:





  • Standby radio magnetic indicator:
TEST – (Push) Tests the related ADF bearing pointers and
warning flags on  the DUs and the standby radio magnetic indicator.
  • Shows 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.