sound card SDR Receiver, VLF band, downconverter / software MIXER - LIVE DEMO with 5 VLF CW signals

[Chuck aa0hw]

brief demo using the sound card SDR modules from RECRI KEYER to downconvert 5 VLF CW signals from 16Khz to 20Khz converted/mixed down to CW audio at 700 hertz

https://github.com/recri/keyer