Pure and 5 wt% of Ag-doped (La1-xYx)(2)Ba2CaCu5Oz superconducting compounds for x=0-0.5 have been prepared. Analysis of X-ray diffraction patterns shows that the samples are essentially in the single-phase form and they could be refined using the P4/mmm space group in a tetragonal cell. The typical lattice parameters are found to be a=b=3.879 angstrom, c=11.646 angstrom for x=0 and a=b=3.856 angstrom, c=11.576 angstrom for x=0.5 samples. The detailed crystal structure parameters are presented. The average grain size values from scanning electron microscope images are found to be in the order of 1-3 mu m. Temperature variations of ac susceptibility and electrical resistivity have been measured. Superconducting transitions with diamagnetic T-c ranging from 60 to 75 K have been observed, with the maximum T-c for the x=0.25 sample. Ag-doped samples exhibit improved inter-granular coupling and homogeneous oxygenation.