Radio uses voice broadcasting and can be divided based on propagation length. Domestic broadcasting in Korea uses medium wave, while AM and FM are the two main types of radio propagation. Radio has become more portable and customizable over time, allowing listeners to hear broadcasts while engaged in other activities. Popular radio shows in Korea include Power Time and Escape Keoltu on SBS, Now the Radio Era and Women's Generation on MBC, and Volume Raise and Kiss the Radio on KBS.