The Ku-Band is a portion of the electromagnetic spectrum in the microwave range of frequencies ranging from 10.9 to 12.75 GHz. Ku-Band is primarily used for satellite communications, particularly for satellite backhauls from remote locations back to a television network's studio for editing and broadcasting. Direct broadcast satellite signals occupy the upper portion of the Ku-Band, from 12.2 to 12.75 GHz.
... was released in Japan and Europe but not in the United States.
However, because the GBA has no region lockout, European games will work fine on a U.S. GBA unit, ...