  In this communication, we report on the anisotropy of the superconducting
properties of multifilamentary Bi-based tapes experimentally investigated by AC
magnetic susceptibility measurements. The susceptibility $\chi= \chi' - j
\chi''$ was measured using a commercial system and a couple of orthogonal
pick-up coils. The $\chi''$ vs. temperature curves were shown to exhibit two
peaks. The smaller of the peaks, occurring near T = 72K, was only visible for
particular field directions and within a given frequency window. Such results
point out the role played by the phase difference between the applied magnetic
field and the internal magnetic field seen by the filaments.
