ATPL: Regarding the DME system, which one of the following statements is true?
Domanda 246, Radio Navigation - ATPL - Airline Transport Pilot license
| The transponder reply carrier frequency differs by 63 MHz from that of the interrogation signal. |
| When passing overhead the DME station the DME will indicate 0. |
| The DME measures the phase difference between the reference and variable phase signals to calculate the distance. |
| The four letter SELCAL code |
