[hpsdr] Basic Webinar from AD

[lstoskopf at cox.net]

Interesting Webinar from Analog.  For the real meat, skip to the last 8 minutes or so.

http://www.analog.com/en/analog-to-digital-converters/products/webcasts/CU_semweb_Quadrature_and_DC_Correction_for_Direct/resources/fca.html#

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