The RDR devices are being used for measuring and radio reception purposes.

Their suitability for the corresponding field of application can be estimated using practical examples.

Basics of RDR signal processing


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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Measurement examples


The signal processing of the RDR receivers is performed with high accuracy. Therefore, these devices can also be used for measuring tasks. The examples presented give an insight in the receiver properties, like noise and distortion characteristics.

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Receiving examples


The cutting-edge receiver concepts of the RDRs requires and enables a somewhat different operating of the devices, as the decade long, almost unchanged philosophy of common receivers allows. Especially the spectrum based mode of operation results in some special characteristics. Difficult reception situations can be better overcome by keeping them in mind.

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