|BeagleBone ADC board with transformer input.|
|Constructed ADC board with transformer input and no amplifier. ADC anti-aliasing filter not populated. TCXO in upper right, input transformer at lower right, ADC right of upper center, regulator and reset on left.|
|-3dBFS 10.640MHz input|
The continued presence of the spur clusters is disappointing but I am out of ideas on the root cause and decided to put it away for a while and move on to other topics.