A receiver for a line locating system that simultaneously processes a power mode signal and a radio mode signal, comprising: one or more receive antennas that are configured to receive signals related to magnetic fields radiated from an underground line, the underground line radiating magnetic fields related to the power mode signal and the radio mode signal; one or more preamplifiers coupled to the one or more receive antennas, the one or more preamplifiers configured to receive signals from the one or more receive antennas; one or more coder-decoder coupled to the one or more preamplifiers to receive amplified signals from the one or more preamplifiers and configured to provide digitized signals corresponding to the amplified signals; a combined filter coupled to the one or more coder-decoder to receive the digitized signals, the combined filter including a half-band finite impulse response filter having an odd number of taps, numbered 0 through N, where N is an even number, and a median tap, the median tap being one of the odd number of taps, wherein filter coefficients for each odd numbered tap is zero, the half-band FIR response filter providing a filter value from an input value to the half-band FIR, the input value being one of the digitized signals, a right shifter that receives a median value from the median tap and shifts the median value right by one bit to provide a half median value, an adder that adds the filter value and the half median value to provide a low-pass filter value, and a subtractor that subtracts the half median value from the filter value to provide a high-pass filter value, wherein the power signal is provided by the low-pass filter value and the radio signal is provided by the high-pass filter value; and a display coupled to display the power signal and the radio signal. one or more receive antennas that are configured to receive signals related to magnetic fields radiated from an underground line, the underground line radiating magnetic fields related to the power mode signal and the radio mode signal; one or more preamplifiers coupled to the one or more receive antennas, the one or more preamplifiers configured to receive signals from the one or more receive antennas; one or more coder-decoder coupled to the one or more preamplifiers to receive amplified signals from the one or more preamplifiers and configured to provide digitized signals corresponding to the amplified signals; a combined filter coupled to the one or more coder-decoder to receive the digitized signals, the combined filter including a half-band finite impulse response filter having an odd number of taps, numbered 0 through N, where N is an even number, and a median tap, the median tap being one of the odd number of taps, wherein filter coefficients for each odd numbered tap is zero, the half-band FIR response filter providing a filter value from an input value to the half-band FIR, the input value being one of the digitized signals, a right shifter that receives a median value from the median tap and shifts the median value right by one bit to provide a half median value, an adder that adds the filter value and the half median value to provide a low-pass filter value, and a subtractor that subtracts the half median value from the filter value to provide a high-pass filter value, wherein the power signal is provided by the low-pass filter value and the radio signal is provided by the high-pass filter value; and a half-band finite impulse response filter having an odd number of taps, numbered 0 through N, where N is an even number, and a median tap, the median tap being one of the odd number of taps, wherein filter coefficients for each odd numbered tap is zero, the half-band FIR response filter providing a filter value from an input value to the half-band FIR, the input value being one of the digitized signals, a right shifter that receives a median value from the median tap and shifts the median value right by one bit to provide a half median value, an adder that adds the filter value and the half median value to provide a low-pass filter value, and a subtractor that subtracts the half median value from the filter value to provide a high-pass filter value, wherein the power signal is provided by the low-pass filter value and the radio signal is provided by the high-pass filter value; and a display coupled to display the power signal and the radio signal.