Single phases BaCe1-xCaxO3-alpha (x=0.05 and 0.10; alpha=x) and BaCe1-xGdxO3-alpha (x= 0.05 and 0.10; alpha=x/2) were prepared via calcination of precursors prepared by oxalate precipitation. Experimental ac impedance spectra enabled separation of bulk, grain boundary, and charge transfer contributions to total conductivity of sintered disks. Each contribution showed apparent Arrhenius behaviour. Bulk protonic conductivities of ceramics prepared by the oxalate route and ceramics prepared by solid state reaction of carbonate and oxide precursors were very similar. For samples from both routes the grain boundary and charge transfer conduction exhibit a higher activation energy than the bulk conductivity, with this difference being more marked in samples from the oxalate route due to differences in microstructure.