CESSNA 172 TRAINING MANUAL
Typical IFR Radio Installation (Conventional Aircraft)
The picture below illustrates a full IFR avionics stack on older models of aircraft.
From top: Audio Selector, GPS, Com 1/Nav 1, Com 2/Nav 2, Transponder, ADF
Illustration 10e IFR Radio Stack
by D. Bruckert & O. Roud © 2006
84