The best replacement for radio wave is sound wave.

The best alternatives to radio wave are rated as following:
★★★★★  sound wave
★★★  microwave
★  gamma ray
★  micro wave

Your alternative for radio wave is not listed? Suggest!


No companions for radio wave have been suggested so far.
You have in mind a companion for radio wave and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of radio wave in all years. Click on graph for more.
radio wave
sound wave
microwave