Gmdss_e3 : Element 3 - 430/605
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| What type of encoding is used in an aircraft's mode C transponder transmission to a ground station of the Air Traffic Control RADAR Beacon System (ATCRBS)? |
| A) Differential phase shift keying. |
| B) Pulse position modulation. |
| C) Doppler effect compressional encryption. |
| D) Amplitude modulation at 95%. |
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