During the Spacelab-2 mission a small satellite carrying various plasma diagnostic instruments was released from the shuttle to co-orbit at distances up to 300 m. During a magnetic conjunction of the shuttle and the satellite an electron beam modulated at 1.22 kHz was emitted from the shuttle during a 7 min period. The spatial structure of the electromagnetic fields generated by the beam was observed from the satellite out to a distance 153 m perpendicular to the beam. Electromagnetic radiation at the fundamental and the harmonics of the modulation frequency was observed as well as broad-banded electrostatic noise. The magnetic field amplitude of the strongest harmonics were comparable to the amplitude of simultaneously observed whistlers while the electric field amplitudes were estimated to 1--10 mV/m. The obervations are related to theories for radiation from pulsed electron beams. ¿ American Geophysical Union 1987