Datasheet for the si5351 https://www.silabs.com/documents/public/data-sheets/Si5351-B.pdf Adafruits development board https://learn.adafruit.com/adafruit-si5351-clock-generator-breakout/overview A link to my github repo that has the si5351 library https://github.com/thaaraak/Tinypico-Radio ... https://www.youtube.com/watch?v=2cb1LLoeT-Y

Just a quick video showing the progress with the workshop. Lots more boxes to unpack and stuff to setup! ... https://www.youtube.com/watch?v=hATkrYNjWtk

In this video the microcontroller and LCD are installed together with the remaining parts of the Frequency Synthesizer and Quadrature Sampling Detector. The I and Q signals generated from an injected signal are then observed. Following that the pre-amp is installed completing the receive path and a signal is injected again demonstrating the full receive path (with the exception of the low pass filter) ... https://www.youtube.com/watch?v=oJMEZfTebgg

In this video I continue the SDR Transceiver series moving on to the Transmit/Receive and Audio switches Previous videos in the series Part 1 - https://www.youtube.com/watch?v=d4cmGwFpQcw Part 2 - https://www.youtube.com/watch?v=aEtmJBbtakM Here is the SDR Transceiver kicad https://github.com/thaaraak/SDR-Transceiver Here is the code I was using: https://github.com/thaaraak/SDR-Transmitter/tree/main/TestAudioSwitch https://github.com/thaaraak/SDR-Transmitter/tree/main/TestAudioSwitchInput 0:00 Intro 1:07 Note on problems encountered with ESP32-A1S 2:33 Recap on ESP32-A1S GPIO config 3:45 Audio Out - where I will be probing on the circuit 4:19 Audio Output from the board 5:27 Testing Audio In (and comparing to a professionally made board) 8:09 Installing the FST3257 Audio Switch and PTT switch 10:08 Testing T/R voltages 11:05 Testing Audio Switch Output 14:07 Testing Audio Switch Input - approach 15:46 Testing Audio Switch - setup 16:17 Audio Switch for RX 17:29 Audio Switch for TX 19:40 Wrap up and Next Steps ... https://www.youtube.com/watch?v=9S1pIiqHy0o