The RDR series receivers principally operate based on digital signal processing (DSP). For this purpose, the received signal is digitized without former frequency translation (“Direct Digitizing Receiver”). The resulting data stream is further processed by configurable hardware (FPGA) until made audible (“Parallel Signal Processing”). Also, the RDRs possess SDR functionality (“Software Defined Receiver”), because the DSP as well as the navigation (User Interface) can be modified via a firmware update in almost any way.
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