[en] The family of uranium based intermetallics UPd_xCu_5-x offers an ideal isostructural system to study the interplay of the impurity Kondo effect with the stability of long range magnetic order in a Kondo lattice. The parent compound UCu₅ is a prototypical Kondo impurity system at high temperatures, with Kondo temperature T_K ∼ 5--10 meV. As the temperature is lowered, intersite interactions drive a transition to long-range antiferromagnetic order of the incompletely compensated uranium moments at 15 K. As Pd is substituted on the Cu sites, the antiferromagnetism is suppressed, with the ordering temperature driven to zero slightly below the composition UPdCu₄. Unusual temperature and magnetic field scaling is observed in the magnetization, specific heat, and electrical resistivity of both UPdCu₄ and UPd_1.5Cu_3.5, inconsistent with the Fermi liquid description appropriate for many Kondo lattice systems, and in particular the parent compound UCu₅. The authors report here the first direct measurements of the fundamental magnetic response for both compounds, providing a clear demonstration of non-Fermi liquid frequency and temperature scaling