We present numerical calculations of the intensity, degree of polarization and spectral index of gyrosynchrotron emission produced by fast electrons with anisotropic pitch-angle distributions. The anisotropy is found to affect the emission substantially. The emission intensity can change up to a few orders of magnitude at the optically thin region in compare to the isotropic case. The local value of spectral index changes considerably with the anisotropy. X-mode polarization increases for loss-cone distributions and decreases for beam-like distributions. Moreover, the sense of polarization can correspond to ordinary wave-mode at the optically thin region for a certain range of the view angles for beam-like distributions. We discuss possible applications and observability of the effects obtained.

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