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72 - ATPL Question Bank in English - The transmitted signal of a frequency-modulated continuous-wave (FMCW) low-altitude radio altimeter is:

Question 72 - Aircraft General Knowledge - Instrumentation - ATPL - Airline Transport Pilot Licence

An amplitude modulated carrier wave.
A combination of frequency modulation and pulse modulation.
A pulse modulated carrier wave.
A continuously transmitted frequency-modulated carrier wave

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