Magnetic, electrical and thermodynamic properties of the pseudobinary alloy system UGa_3-xGe_x, 0 \leq x \leq 3, have been studied by means of magnetic susceptibility, electrical resistivity, thermoelectric power and specific heat measurements. The results indicate a gradual transformation  from itinerant antiferromagnetism in Ga-rich alloys to Pauli paramagnetism in Ge-rich materials. Total suppression of the magnetic order occurs near the composition x \approx 0.6. For UGa_2.4Ge_0.6 curious behavior of the low-temperature bulk properties has been found that develops presumably because of the closeness of this alloy to a magnetic quantum critical point.

PACS numbers: 75.50.Ee, 75.30.Mb, 72.15.Qm, 74.20.Mn