A communications radio has an IF stage with an associated filter array. The array includes at least one narrowband filter whose passband is less than 3 MHz, at least one wideband filter whose passband is 3 MHz or greater, a first switch with a common pole connected to an input terminal of the array, a second switch with a common pole connected to an output terminal of the array, a third switch whose common pole is operatively connected to the input terminal, and a fourth switch whose common pole is operatively connected to the output terminal. The first and the second switches cooperate to insert a selected filter between the first and second terminals. The third and the fourth switches cooperate to insert the filter array into either a receive signal path when the radio is in a receive mode, or a transmit signal path when in a transmit mode.