I have the good fortune to be retired and wealthy enough to afford the=20 toys I really want. I have a Flex5000 Ham transceiver with most of the=20 options and many bits and pieces of the SDR market. I probably do=20 understand the various components but I am not comfortable with that=20 understand. I have not purchased his book(s) yet but Mr Lyons is on my=20 list of things to read. Part of my personal problems are that the internet furnishes many neat=20 distractions every day! I am older than dirt and still studying... On 7/15/2017 9:10 PM, Jean-Paul Louis wrote: > John, > I understand your frustration about SDR, but to fully > grasp its power, you need a thorough understanding of complex maths > as it applies to electromagnetism (RF). > I do not know what is your background in electronics, but for me > a book about DSP by Lyons helped me a lot to understand the FFT > (Fast Fourier Transform) which is the foundation of SDR. > > Good luck with your experiments. > > 73 de Jean-Paul > N1JPL > > PS: I am also in NC (Wilmington) > > > > >> On Jul 15, 2017, at 8:24 PM, John Ferrell wrot= e: >> >> My Amateur Radio Club had a >> >> Velleman pcsgu250 donated and I bought it for $120. Probably too much, >> but it seems like it is going to work out well for its intended purpose >> with audio and SDR studies. It just sits there and does what it is >> supposed to do. The specs are not all that impressive but it is handy >> and the function generator is simple as well. For some reason I find the >> SDR subject very difficult to grasp. >> >> >> On 6/14/2017 6:23 PM, Forrest Christian (List Account) wrote: >>> http://www.bitscope.com/product/BS05/ perhaps? >>> >>> Not vouching for these in particular... just know they exist. >>> >>> On Tue, Jun 13, 2017 at 7:16 AM, Jason White < >>> whitewaterssoftwareinfo@gmail.com> wrote: >>> >>>> I would like to find a cheap-ish USB ADC module with a sampling rate o= f >>>>> =3D2MS/s. For hobby use. Any input voltage range will work. Anybody k= now of >>>> any? >>>> >>>> I am aware that RTL-SDR dongles are cheap and plentiful, but to my >>>> k >> --=20 >> John Ferrell W8CCW >> Julian NC 27283 >> It is better to walk alone, >> than with a crowd going the wrong direction. >> --Diane Grant >> >> --=20 >> http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive >> View/change your membership options at >> http://mailman.mit.edu/mailman/listinfo/piclist > Just my $0.02, > > Jean-Paul > N1JPL > > > > --=20 John Ferrell W8CCW Julian NC 27283 It is better to walk alone, than with a crowd going the wrong direction. --Diane Grant --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .