[en] Effects of Ho³⁺ and Ca²⁺ substitutions in (Ho_1-xCa_x)(Ba_2-yHo_y)Cu₃O_7-δ ceramics on normal and superconducting state behaviour were investigated. Electrical resistivity measurements showed increasing Ho³⁺ substitution at Ba²⁺ site (x = 0, 0.4, y = 0-0.4) caused normal state resistivity to change from metal-like to semimetal/semiconductor-like behaviour and suppressed T_c from 89 K (y = 0) to 72 K (y = 0.4) while substitution of Ca²⁺ for Ho³⁺((x = 0.2) 0.4, (y 0.4)) revives metallic behaviour of the normal state with increasing x. Excess conductivity analysis based on Asmalazov-Larkin theory showed 2D to 3D transition for all superconducting samples but with contrasting effects of the substitutions on AL_2D and AL_3D constants. The resistivity and excess conductivity results indicate effective hole filling Ho³⁺ and hole doping by by Ca²⁺ substitutions.