an antenna for receiving an electromagnetic signal;

a primary downconverter comprising a harmonic-resistant frequency translator, the primary downconverter configured to convert the electromagnetic signal to an intermediate frequency signal;

an analog-to-digital converter configured to convert the received electromagnetic signal or the intermediate frequency signal to a digital intermediate signal;

a wideband interference mitigation module coupled to an output of the primary downconverter to process or filter the digital intermediate frequency signal;

a secondary downconverter comprising a digital harmonic-resistant translator for converting the filtered digital intermediate frequency signal to a filtered digital baseband signal;

a selective filtering module for filtering of the digital baseband signal, the selective filtering module comprising a low-pass filter is configured as an anti-aliasing digital filter consistent with a target receive bandwidth for a first band to suppress aliasing in digital signal processing; and

a narrow band rejection filter to filter the digital baseband signal to reduce or mitigate electromagnetic interference for the first band, where the narrow band rejection filter is configured for adaptive control responsive to detection by the wideband interference mitigation module of certain interference in the received radio frequency signal.