I am a co-author of the dsp software in the SDR-1000 (with AB2KT). When I began working with the SDR-1000 as a customer, it had less than stellar performance. Along with many others, repeated study w
I live on a dirt road in Georgia and work at home. Now that that's out of the way, let's look at what the ARRL says. :-) I measured: IM3 DR between 76.2 and 94.1dB on 160 meters depending on preamp a
This thread puzzled me as it seemed that Tom and Bob were vehemently agreeing with each other. Let me explain: a) What did Tom W8JI say when asked what was so bad about the SDR-1000? "It has essentia
Can someone point me to a block diagram of the SDR-1000? I want to understand what they have done. "When you're a Ham, you're a Ham all the way" - Apologies to Steven Sondhiem _______________________
It would be nice if we could and stick with facts. 1.) All mixers "make noise" and all mixers have some non-linearity. In a perfect passive mixer (which there is no such thing) loss alone sets noise
W4EF: of tone spacing" True but BDR is ~100 dB for the SDR-1000 versus ~130 for other rigs (ARRL measurements). BDR seems to be the weak point of SDR so far. Perhaps 32-bit sound cards will eventuall
If what you say about the real close in performance is true, Bob (and I have no reason to believe its not), I am surprised that nobody has tried using the SDR-1000 as the IF of a superhetrodyne recei
Yes, I am all for facts. That's why I like being an engineer and not a politician. That was sort of the point of my tongue and cheek post, Tom. Your were saying that the SDR-1000 didn't meet your nee
Yeah, seems that is the achilles heal of the SDRs right now. As you suggest, it will be interesting to see how the equation shifts as the sound cards get better. 73, Mike W4EF........................