[hpsdr] HPSDR 1. SDR generation?

[glennt at gbis.com]

Hmmm... seems to me that "generations" are delimited by revolutionary 
changes in approach. I don't think any of the SDRs really qualify as 
revolutionary among SDRs - they are evolutionary.

I would describe the previous "generation" is defined by solid state 
synthesized analog radios - possibly with digital assistance in terms of 
synthesizer management and audio DSP. Early examples (circa 1980) would 
be the Collins KWM-380 and the Icom IC-720A.

The current "generation" is the crop of SDRs already listed. They break 
with the analog approach, so they would be a new generation based on 
that revolutionary change in the design approach. There are evolutionary 
differences between them, but everything from the SoftRock to the 
HPSDR/Flex-6000 are part of this generation.

Dunno what the next generation will look like. Previous generations seem 
to spawn on roughly 20 year intervals and it's not yet been enough time 
to discern the outlines of the next generation. Anyone who really wants 
to know what the "next generation" is going to look like should be 
paying very close attention to the crackpots among us, mainly because 
one of them is not a crackpot...

Speaking of crackpots, "generations" can also be taken as general 
marketing bullroar and otherwise without meaning. In a sense, every new 
development is an evolution of something that came earlier.

73 de Glenn WB6W


On 7/4/2013 7:30 AM, Roland Etienne wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
> Helmut,
>
> I agree with you 100%! For me the first generation is QSD/QSE based sdr
> 1000, flex 1500,3000 and 5000, sdr cube, etc.. And second generation is
> DDC/DUC based, HPSDR (the first one!)QS1R/E,ANAN,Flex 6000 series.
> No idea of what the third generation could be, for the moment, hi!
>
> 73,
> Roland F8CHK

-- 
Speaking of recursion, why did the cynics go wrong?



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