NDB Question
"The automatic direction finder (ADF) is a needle indicator fitted in the aircraft that shows the direction to the selected NDB from the aircraft. This is either displayed a relative bearing (angle between the aircraft heading and the direction of the NDB) on a relative bearing indicator (RBI) instrument or as a QDM on an RMI instrument."
Would i be right in saying that the relative bearing on a relative bearing inicator is the same as the QDM on an RMI instrument just differents instruments used thus the different names?