A member of the BIMEVOX family with vanadium partially substituted by cobalt (Bi2Co0.1V0.9O5.35 - BICOVOX.1) was synthesized. The synthesis process was investigated by means of DTA. Dense ceramic samples were obtained after several minutes of sintering at 850-degrees-C, which is a higher temperature than that required for BICUVOX.1 (800-degrees-C). The Arrhenius plots of the total electrical conductivity for the obtained samples consist of two straight line sections with distinctly different values of activation energy. Between 400 and 500-degrees-C a rapid increase of conductivity with increasing temperature is observed. At temperatures above 500-degrees-C the conductivity of BICOVOX.1 is slightly higher than that of BICUVOX.1. Except for the first heating, the conductivity values during heating and cooling cycles are approximately the same.