What is it called when an FM signal occupies no more spectrum space than AM signal?
(a) Amplitude modulated frequency wave
(b) Narrowband FM
(c) Shortband FM
(d) Equalband FM
I had been asked this question during an internship interview.
I would like to ask this question from Frequency, Phase Modulation, Modulation Index and Sidebands topic in portion Amplitude & Frequency Modulation of Avionics