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=20 (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 wrote= : >=20 > My Amateur Radio Club had a >=20 > Velleman pcsgu250 donated and I bought it for $120. Probably too much,=20 > but it seems like it is going to work out well for its intended purpose=20 > with audio and SDR studies. It just sits there and does what it is=20 > supposed to do. The specs are not all that impressive but it is handy=20 > and the function generator is simple as well. For some reason I find the= =20 > SDR subject very difficult to grasp. >=20 >=20 > On 6/14/2017 6:23 PM, Forrest Christian (List Account) wrote: >> http://www.bitscope.com/product/BS05/ perhaps? >>=20 >> Not vouching for these in particular... just know they exist. >>=20 >> On Tue, Jun 13, 2017 at 7:16 AM, Jason White < >> whitewaterssoftwareinfo@gmail.com> wrote: >>=20 >>> I would like to find a cheap-ish USB ADC module with a sampling rate of >>>> =3D2MS/s. For hobby use. Any input voltage range will work. Anybody kn= ow of >>> any? >>>=20 >>> I am aware that RTL-SDR dongles are cheap and plentiful, but to my >>> k >=20 > --=20 > John Ferrell W8CCW > Julian NC 27283 > It is better to walk alone, > than with a crowd going the wrong direction. > --Diane Grant >=20 > --=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 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .