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The receive chain might have a tunable Local Oscillator, Mixer and BPF, before reducing the sampling rate further for final processing, detection etc. Isn't this a superhetrodyne receiver? The only difference is that these would be in discrete time, after the ADC. A normal DDC would convert directly to baseband, but you could make the choice to convert to an ...


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The 7300 is a direct sampling receiver, since it samples RF at well above twice the the band frequency of interest. However, there is more than one signal path with more than one bandwidth and center frequency involved. Although one of the signal paths is direct sampling (likely the widest bandscope) other digital signal paths may not be as wide. Those ...


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The 7300 is a direct sampling receiver, and you can clearly see it in the block diagram under "Direct Sampling Receiver". Antenna -> BPF -> ADC -> digital processing -> a DAC to drive the speaker. Everyone who's taken it apart is pretty well in agreement about that. The 36kHz is either just a bogus spec, or is a "digital IF" ...


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