G'day Freo, For your first two questions, you need to turn on the audio feed in that radio panel.Only the items that have the yellow indicator is what you will hear. To hear the markers you need to click on MKR and to hear your NDB ident you need to click on either ADF1 or ADF2 whichever is correct.I am unable to comment on your third question as the VOR/ADF2 selector on my standby instrument does operate.