Tom Wylie wrote:
>
> Isn't the K3 an SDR???
>
> GM4FDM
>
Not according to Flex Systems..."Real radios don't need knobs".
Maybe not, but so far they don't win HF contests either...unless there are
no other entrants in the category. ;-)
Technically you're correct. The K3 and most high-end transceivers
introduced in the past ~10 years are technically SDRs (but they hide it
well). :-) There are at least 3 different variants of SDRs:
1. Hybrid superhet/DSP. Roofing filter front-end followed by DSP (e. g.
Orion, K3, IC-7800, etc).
2. Quadrature Sampling Detector (QSD) front-end (e.g. Flex 1000, 5000,
etc).
3. Direct Conversion (high speed ADC) front-end (Perseus, QS-1R, HPSDR,
etc).
73, Bill
--
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