Experiments in the ELMO Bumpy Torus (EBT-I) are described which demonstrate that plasma currents produced by microwave heated, hot-electron annuli can produce macroscopically stable plasma confinement in a steady-state bumpy torus. The diagnostic developments which provide the array of tools required to document the plasma properties are described. The toroidal plasma parameters were measured over a modest range of operating conditions and are categorized by the theoretically relevant parameter ..nu../..cap omega.., where ..nu.. is the electron collision frequency and ..cap omega.. is the average electron precession frequency about the toroidal axis. The relevance of the theoretical transport model is discussed in a comparison with the data.