→Spacecraft: All non-wikipedia sources (including NASA) says that the antennas forming the X-Y plane is 200 meters tip-to-tip. Only Wikipedia articles say 200 centimeters. I believe this is a typo, and all mentions of 200 cm should be fixed to 200 m
The spacecraft approximated a short polygon {{cvt|137|cm}} in diameter and {{cvt|115|cm}} high. The antennas in the X-Y plane measured {{cvt|200|cmm}} tip-to-tip, and on the Z-axis are {{cvt|9|m}} tip-to-tip. Two {{cvt|6|m}} booms are provided for remote measurements. Power is supplied by a solar cell array, mounted on the side and end panels. The spacecraft is [[Spin-stabilisation|spin-stabilized]], with the spin axis normal to the orbital plane, and the spin rate at 10 ± 0.1 [[Revolutions per minute|rpm]]. A [[pulse-code modulation]] (PCM) [[Telemetry|telemetry data system]] is used that operates in real time or in a [[tape recorder]] mode. Data have been acquired on a science-problem-oriented basis, with closely coordinated operations of the various instruments, both satellites, and supportive experiments. Data acquired from the instruments are temporarily stored on tape recorders before transmission at an 8:1 playback-to-record ratio. Additional operational flexibility allows a playback-to-record ratio of 4:1. The primary data rate is 16,384 [[Bit rate|bits per second]]. Since commands are stored in a command memory unit, spacecraft operations are not real time, except for the transmission of the wideband analog data from the Plasma Wave Instrument (1981-070A-02). On 22 October 1990, the science operations were terminated. On 28 February 1991, Dynamics Explorer 1 operations were officially terminated.<ref name="Display"/>
