This chart, created by the US Federal Communications Commission, is a graphic representation of how broadcast rights in different frequency bands are distributed between interested parties. Allocating broadcast rights in different frequency bands is a complex problem, since many variables must be taken into account. In 1994, spectrum auctions, where companies could bid for rights, were organised in the US. The auctions used a new format, Simultaneous Multi-Round Auction (SMRA), specifically designed for this purpose by Paul Milgrom and Robert Wilson.
Paul Milgrom donated the chart to the Nobel Prize Museum in 2021.