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Field emission cathodes are presently being developed as low-power space electric propulsion neutralizers and for spacecraft charge control and electrodynamic tether applications requiring no consumables. These cathodes effect cold electron emission by the application of a relatively high electric field across a small gap from some kind of electron emitting (cathode) surface. Various designs of field emission cathodes are being investigated for charge control on a student-built experiment called Field Emission GetAway Special Investigation (FEGI), including molybdenum, carbon nanotube, boron nitride and diamond surface emission cathodes. This paper presents the current progress of the FEGI experiment with a focus on the emitters that will be flown, and the immediately surrounding electrical, mechanical and environmental support structures. Nomenclature LVTF =

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