Question

Why low frequency em wave are not used for data transmission?

Answer 1

Answer:

wavelengths, particularly those in the VLF or lower range are not useful when large amounts of information or data needs to be transmitted. Also there is less frequency "room" in the EM spectrum for these low frequencies than in the higher frequency bands. HF frequencies must be changed.

Answer 2

wavelengths, particularly those in the VLF or lower range are not useful when large amounts of information or data needs to be transmitted. Also there is less frequency "room" in the EM spectrum for these low frequencies than in the higher frequency bands. HF frequencies must be changed.