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February 6th 16, 02:10 PM
posted to rec.radio.amateur.equipment,uk.radio.amateur
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An SDR or DDS question?
Presumably those SDR rigs which do not work on the IF but
directly from antennae must have, separately from the DSP processor, some semblance of a DDS generator (but without the final DAC) to act as the equivalent of the VFO, for I cannot perceive that a fractional-Hz tuning rate could be achieved with machine code running in the DSP processor? |
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