brief demo using FLdigi as TX & RX to encode & decode RTTY at 12Khz
http://www.w1hkj.com/FldigiHelp/rtty_...
upCONVERSION encoding
&
DOWNconversion DECODING
by sound card SDR MODULES from: RECRI KEYER
https://github.com/recri/keyer
for more examples of 'Through The Earth' Comms setups like these...
see the playlist here:
• DiY 'Through the Earth' Transmitter ...
Watch video pi4 DiY 'Through the Earth' CAVE RADIO 12kHZ VLF RTTY Transmitter & Receiver - LIVE demo online without registration, duration hours minute second in high quality. This video was added by user QRQcw 13 December 2022, don't forget to share it with your friends and acquaintances, it has been viewed on our site 277 once and liked it 5 people.