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Long ago in SDR time, i.e., a couple of years back, there was an article somewhere about substituting an ultra low noise +/- 15V power supply for the switching unit in the SDR-1000, with the intent of lowering the noise in the quadrature output op amps. I now have the time, SDR-1000 and ultra low noise supply to do the job, but haven't relocated the article yet. Anybody have a pointer? Thanks so much.<BR>
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Chris Day<BR>
AE6VK<BR>
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