A concept album exploring themes of broadcast communications, Radio-Activity marked Kraftwerk's return to more obtuse territory, extensively utilizing static, oscillators, and even Cage-like moments of silence to approximate the sense of radio transmission; a pivotal record in the group's continuing development, the title track — the first they ever recorded in English — is their most fully realized electro-pop effort to date, while "The Voice of Energy" precipitates the robot voice so crucial to their subsequent work.

Track Listing
1 Geiger Counter
2 Radioactivity
3 Radioland
4 Airwaves
5 Intermission
6 News
7 The Voice of Energy
8 Antenna
9 Radio Stars
10 Uranium
11 Transistor
12 Ohm Sweet Ohm