soundcard SDR VLF 30kHZ CW Transmitter & Receiver - LiVE DEMO
TX & RX 30Khz VLF CW using Recri Keyer's SDR Modules on a LAPTOP & its USB SOUND CARD that operates at a sample rate of 96Khz
RECRI KEYER:
https://github.com/recri/keyer
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