The current–voltage(I–V)characteristics and the resistive transition under magnetic field were extensively investigated onc-axis oriented YBCO polycrystalline films with a different amount of an in-plane grain alignment. All the parameters deduced from the scaling analyses in the intergranular region along with the vortex-glass-to-liquid transition indicate that the intergranular current transport is not via weak links but is due to strongly coupled channels regardless of a degree of an in-plane grain alignment. ©1997 American Institute of Physics.