"Back to the VOR - The second half of the VOR solution is that the whole signal - meaning the transmitted 113.4 MHz signal (which also contains the reference and the audio stuff) varies in amplitude. In the classic VOR design that's because the VOR antenna itself whirls round with an electric motor (although the reality doesn't involve a huge antenna going round, and actually involves some transformations that are beyond this tutorial, but just imagine an antenna whizzing round and you get the idea). The antenna whirls around at the same 30 Hertz rate as the reference signal. When it is pointing straight at you, the signal is loudest, when it is pointing away, it is quietest. It is therefore amplitude modulated, and we can demodulate that as well."
This is something that gives me an headache.
Why will the VAR signald be amplitude modulated?
In my mind something moving towards and away from you will have a shift in frequency.
As for the DVOR, the VAR is frequency modulated,right?
Can you see what I mean?
Thanks for your answer!
