How does the ADF indicator work in terms of pointing the needle in the direction of the NDB signal? I understand that the ADF needle points towards the direction of the NDB signal for a given frequency, but when a pilot tunes in the ADF signal, the heading ring does not change when the ADF was tuned into the frequency, only the direction of arrow changes.
So my question is, how do you use the heading selector when navigating with the ADF? And is it important to change the heading?
In the image, let's assume the aircraft is heading 030 degrees, but the heading on the ADF does not change to 030 degrees only the ADF needle changes its direction. Why is this?
If I were to turn from 030 degrees to 180 degrees, the needle would only change its direction not the heading of the ADF.