>> Its dynamic range may be OK for IMD but today's SDRs cannot approach the BDR >> of >> rigs like the K3 until even higher resolution ADCs become available.
> Sorry to tell you a bad new: you are wrong! Nico & Phil, When can we expect to see direct R.F.-sampled SDRs with better MDS performance? When we compare MDS data across QST product reviews in a 500 Hz filter B/W, we see marginal figures of ~ -128 dBm @ 14 MHz. This is true of the Perseus, SDR-IQ, and Flex 5000A. By contrast, radios such as the K3 and Orion offer excellent MDS figures approaching -140 dBm while still providing excellent close-spaced blocking and I3 dynamic range. Paul, W9AC
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