Teensy SDR

This is my version of the Teensy SDR. I built this from schematics and information posted by VE3MKC, DD4WH and PA0RWE. I didn’t like having everything spread out across multiple little boards so I designed the circuit board to include the si5351 oscillator, quadrature detector, and the SGTL5000 codec all on one board. Assembly wasn’t too difficult except for soldering the SGTL5000. It is a QFN32 chip and even with a hotair rework station, I managed to destroy a couple of them by overheating while tryi