Question

The propagation delay of DME radio signals in the frequency band is timed between ___________

(a) 960 Hz and 1215 Hz

(b) 960 MHz and 1215 MHz

(c) 96 MHz and 121 MHz

(d) 96 Hz and 121 Hz

I had been asked this question during an interview for a job.

My query is from Aviation Communication Systems in portion Aviation Communication Systems of Aircraft Maintenance

Answer 1

Right choice is (b) 960 MHz and 1215 MHz

The best I can explain: The propagation delay of DME radio signals in the frequency band is timed between 960 MHz and 1215 MHz. Line of visibility between the aircraft and the ground station is necessary.