QRQ CW iphone receiver over SONOBUS via pi4 QUISK SDR/realvnc using 8 VLF signals & 8 CW text files

[Chuck aa0hw]

demo showing unixcw/CW sending 8 different CW Text files at 60 wpm to a pi4 QUISK SDR, using sonobus on the pi4 to send QUISK SDR demodulated output to the iphone sonobus// iphone using REALvnc to choose which pi4 QUISK SDR VLF SIGNAL to demod and listen to

UNIXCW CW https://unixcw.sourceforge.net/

SONOBUS https://sonobus.net/

NOTE: the unixcw CW program is using 8 sub-channels of the alsa loopback virtual audio cable snd-aloop via commands like this

cw -d hw:1,1,3 -f john.txt -w 60 -k 50 -t 500 -v 10

the hw:1,1,3 shows the loopback cable 1, subchannel 3 being used

there are 8 subchannels for each alsa loopback that can be used to get audio out of each CW alsa loopback and send it to the QUISK SDR

alsa_in command is used via a command like this:

alsa_in -d hw:1,0,3

then a simple UDP/RTP audio over ip Gstreamer script is used to send all 8 signals to the pi4 quisk sdr input

NOTE: if you want each UNIXCW CW terminal/command to play the text file continuously on REPEAT... you can use a command like this (to stop it, you will have to X out the whole terminal at upper RT corner, you may have to go to task manager to KILL 'CW' if it is still running after closing the terminal)

      while true; do (cw -d hw:1,1,3 -f john.txt -w 60 -k 50 -t 500 -v 10); done