Difference between Radiotelephony and Radiotelephone

What is the difference between Radiotelephony and Radiotelephone?

Radiotelephony as a noun is the transmission of sound (in both directions) using modulated radio waves rather than wires while Radiotelephone as a noun is a device that allows two-way communication via radio

We hope you now know whether to use Radiotelephony or Radiotelephone in your sentence.