Methods for calibrating a Wireless Location System to enable the system to make highly accurate TDOA and FDOA measurements are disclosed. A method for calibrating and correcting for station biases in a receiver system employed in a wireless location system in accordance with the present invention comprises the steps of measuring the length of cable from the antennae to the filter and determining the corresponding delay associated with the cable length; injecting a known signal into the filter and measuring the delay from the filter input to the wideband receiver; combining the delays and using the combined delays to correct subsequent location measurements.