A radio device that is capable of positioning itself within a broadcast
radio system includes a receiver operable to receive a plurality of
broadcast radio signals, each broadcast from a respective one of a
plurality of broadcast radio signal sources. The radio device further
includes processing circuitry operable to determine respective call
station identification information for each of the broadcast radio signal
sources from the broadcast radio signals, measure respective signal
quality characteristics for each of the received broadcast radio signals,
identify station position data associated with each of the broadcast
radio signal sources from the respective call station identification
information, and calculate a location of the radio device using the
signal quality characteristics and station position data associated with
at least three broadcast radio signal sources.