Large amplitude low frequency (0.7-2.5 kHz) oscillations which are in phase across the minor radius have been observed in soft X-ray emission since the removal of limiters from HBTX1B Reversed Field Pinch for plasmas with small field reversal, F, at all toroidal currents. These oscillations, due to variations in electron temperature, are in antiphase with oscillations in plasma resistance and ion temperature and occur in the majority of discharges where the resistance is closest to its lowest value. Correlated magnetic oscillations indicate cyclic behaviour in the F- theta plane similar to that observed at high values of theta on other experiments, where theta is the pinch parameter.