Source: cirosantilli/why-can-t-you-send-voice-without-modulation
= Why can't you send voice without modulation?
{wiki}
https://www.quora.com/Why-cant-an-audio-signal-to-be-fed-or-transmitted-to-the-antenna-without-modulation
Basically, the antenna has to be very, very large, more comparable to wavelength. E.g. even for the higher pitches, we fall in <very low frequency>, so have a look at the size of some of the <submarine> VLF antennas! They are like football pitch sized.