Longterm 146 MHz radio lightcurve of CR Dra in total intensity S_I (top panel), circular polarisation S_V (middle panel), and the ratio |S_V∕S_I|. Only positive Stokes V emission is detected, implying we observe only left-hand circularly polarised emission from CR Dra. Uncertainties represent 1σ and are only shown if larger than the symbol size. The ratio |S_V∕S_I| is plotted if the corresponding signal-to-noise ratio of CR Dra is ≥3σ in both Stokes I and Stokes V emission. We show 3σ upperlimits for |S_V∕S_I| if the emission in Stokes I is ≥ 3σ but < 3σ in Stokes V.