Polycrystalline Hg 1 - x Bi x Ba 2 Ca 2 Cu 3 O y materials, with Bi-content x=0.1,0.2 and 0.3, were prepared by a direct, one-step synthesis. Characterization methods included X-ray diffraction, SEM, and studies of the magnetization M. The T c 's were 133.5, 133 and 128K, respectively. The persistent current density J p falls off roughly exponentially with field H and temperature T. The irreversibility fields H i r r (T)~(1-T/T c ) n , with n~3, were similar for the three materials. Analysis of the equilibrium M with London theory provided the London penetration depth λ(T).