Measuring the moisture content of peanuts without shelling the peanuts, particularly during buying/selling anddrying, would be beneficial to the peanut industry. Previous research has shown that radio frequency (RF) impedancemeasurements of capacitance (C) and phase angle (.) using a parallel-plate system could be used to estimate the moisturecontent (MC) of a single in-shell peanut. This method was extended to determine the average MC of a small sample of peanutpods accommodated between the plates. For both single pods and small samples, the predicted MC values were within 1%of the standard air-oven values for over 85% of the samples tested in the moisture range between 5% and 22%. The currentresearch discusses extending the measurement system to predict the average MC of in-shell peanuts in bulk quantities (about200 g) from similar capacitance and phase angle measurements at 1 and 9 MHz. The parallel-plate system used in previousresearch was modified and fitted into a non-conducting cylindrical sample holder.