SDR Transceiver - Part 3 Audio and TR Switch
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 - • SDR Transceiver - Part 1 Overview and Tran...
Part 2 - • SDR Transceiver - Part 2 Board Walkthrough...
Here is the SDR Transceiver kicad
https://github.com/thaaraak/SDR-Trans...
Here is the code I was using:
https://github.com/thaaraak/SDR-Trans...
https://github.com/thaaraak/SDR-Trans...
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