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A supersonic molecular beam sample of rhodium monoxide, RhO, has been generated using a laser ablation/chemical reaction generation scheme and probed using near natural line width limited optical Stark spectroscopy utilizing laser induced fluorescence detection. Stark splittings in the (0) and (1) lines of the [15.8] and [16.0] $2\Pi 1/2-X4\Sigma -$ (0,0) transitions were observed upon application of static electric fields up to 2400 V/cm. Comparisons of the determined field-free molecular parameters is made with previous work} \textbf{216}, 136-150 (2002).}'} \textbf{370}, 106-111 (2003).}'} \textbf{231}, 99-107 (2005).}. Progress on the analysis of the Stark effect will be reported.