Superconductor of type Tl1-xInxBa2(Ca0.9Y0.1)(2)Cu3O9-delta for x = 0, 0.1, 0.2, 0.3 and 0.5 were synthesized using stoichiometric amount of Ba-2(Ca0.9Y0.1)(2)Cu3O7+delta precursor, Tl2O3 and In2O3 in a tube furnace at 870 degrees C. The samples were characterized using the x-ray powder diffraction and the scanning electron microscope (SEM) whereas the composition of these samples were determined by micro-probe analysis. The transition temperature T-c for as-synthesized (Tl, In)-1223 compound, determined from the electrical resistance measurements, varied from 122 K for x = 0 to 100 for x = 0.6 These results indicate that the addition of indium decrease the transition temperature of Tl-1223 phase. This is because the addition of indium changes the Tl-1223 phase to the over-doped region. The argon annealing for some of these samples were studied. The effect of external applied magnetic field on the stage of transition is reported. Our data show that the transition width is increased by the increasing of the external applied magnetic field. The samples are more affected by the magnetic field with increasing of indium content.