PowerSDR/IF Stage is a modified version of FlexRadio Systems PowerSDR software. It is intended for use with Software Defined Radio (SDR) receivers, such as the Softrock, that are being used as an Intermediate Frequency (IF) stage with a radio that is capable of being computer controlled (via C.A.T. commands). The PowerSDR/IF Stage software now communicates with the Ham Radio Deluxe software to control and keep in sync with the radio being used. It also now supports direct serial connections to some radio models.