Chuck aa0hw's Blog – September 2022 Archive (7)

pi2b is really too weak for this kind of work... however, pi2b is tested anyway to see how it would perform under the stress.

- a pi4b does quite well at this though, using the same setup....

once setup , CARLA is able to save not only all the APPs and their positions, but also the wires that connect…

https://www.polyphone-soundfonts.com/

to send MIDI NOTES to the SF2 player, CARLA's own SF2 player, a midi cw output is needed....

and provided by RECRI KEYER in this example…

TEST sending CW MiDi over iP using Gstreamer from 20 wpm to over 100 wpm

create a single SINE WAVE or a single CW AUDIO NOTE using Audacity save as a WAVE FILE...

import into Polyphone Soundfont Editer…

https://www.zerotier.com/

https://github.com/recri/keyer

https://github.com/ssj71/OSC2MIDI

this is a REMOTE RIG OPERATIONs setup for CW via AFCW mode for keying the RIG over IP on the LAN using Gstreamer AUDIO over IP scripts... laptop to a raspberry pi2b interface...

the RIT SETUP uses 3 SDR MODULES from RECRI KEYER in this order:

RX over IP STREAM to

"HILBERT CELL"…

https://www.haivision.com/blog/all/srt-everything-you-need-to-know-about-the-secure-reliable-transport-protocol/

using a modified PYTHON SCRIPT from:

https://brettviren.github.io/pygst-tutorial-org/pygst-tutorial.html

a VLF 12Khz AM Transmitter & Receiver is constructed creating a 4 CHANNEL VLF RF Over IP TX & RX…