LES-6, OV2-5, OV5-2, OV5-4

LES 6 (Lincoln Experimental Satellite 5) was an experimental military UHF communications satellite.

Orbiting Vehicle or OV, originally designated SATAR, was a series of American satellites operated by the US Air Force

OV5 (Orbiting Vehicle 5) was a series of standardized, simple experimental satellites based on earlier ERS (ORS Mk.3) satellites. Each carried different experiments:

OV5 (Orbiting Vehicle 5) was a series of standardized, simple experimental satellites based on earlier ERS (ORS Mk.3) satellites. Each carried different experiments: