It has long been known that asymmetric electric and magnetic fields produce radial transport in Malmberg‐Penning traps, and much work has been done to understand this transport. Our approach is to apply a variable frequency electric asymmetry to a low density population of electrons and to measure the resulting radial particle flux &Ggr; as a function of radiusr. The low particle density eliminates many plasma modes (which have their own frequency dependence) and allows us to focus on the transport physics. The usual azimuthalE×Bdrift is maintained by a biased central wire, and this arrangement also allows us to independently vary the drift frequencywRby adjusting either the axial magnetic fieldBzor the bias of the central wire &fgr;cw. Up to forty wall sectors are used in order to apply an asymmetry consisting of a single fourier mode (n, l, w), wherenis the axial wavenumber,lis the azimuthal wavenumber, andwis the asymmetry frequency. In the current experiments, we varyw,n, &fgr;cw, andBz. Aswis varied, the particle flux shows a resonance similar to that predicted by resonant particle theory. The peak frequency of this resonancefpeakincreases withwRand varies withn, in qualitative agreement with theory, but when quantitative comparisons are made the experimental values forfpeakdo not match those predicted by theory. Instead, the dependence offpeakon &fgr;cw,Bz, andrfollows simple empirical scaling laws: for inward directed flux,fpeak(MHz) ≈ [−R&fgr;cw(V)/rBz(G)]1/2, whereRis the wall radius, and for outward directed flux,fpeak(MHz) ≈ 0.8[−&fgr;cw(V)/Bz(G)]1/2. These results may provide guidance for the construction of the correct theory of asymmetry‐induced transport. © 2003 American Institute of Physics