Bi-doped Tl-1223 superconductors of the composìtion Tl x Bi 0.4Sr 1.6Ca 2Cu 3O y ( x − 0.59–0.92) were prepared from oxidic Bi-Ba-Sr-Ca-Cu precursor material. Upon calcination of the spray-dried metal nitrates, the respective amounts of Tl 2O 3 were added to the oxidic powders by milling. The sintered and annealed samples consisted predominantly of the Tl-1223 phase with small amounts of Tl-1212 and secondary phases. T c(0)-values ranged between 108 and 116 K with transition widths as small as 1 K. T c-onsets from magnetic measurements varied between 110 and 116 K. The transition widths in the magnetization curves were 2–4 K. Transport critical current densities up to 2.1 kA cm −2 at 77 K were measured. Texturing could be improved by grinding, repressing and resintering of the superconducting material increasing the transport critical current density in bulk material to 4.2 kA cm −2 at 77 K.