Receivers have traditionally been at the forefront of Amateur Radio technology and certainly are today, even as the long-reigning analog superheterodyne architecture is being overtaken by the digital software defined radio. While commercial designs and devices abound, receiving in the crowded amateur bands is still a demanding application with strong signals immediately adjacent to signals at the noise floor, a variety of natural and man-made interferences to reject, and modes ranging from manually sent Morse to the latest experimental modulations.