Started Feb 14, 2015
Started this discussion. Last reply by Chuck aa0hw Oct 1, 2021.
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this setup uses the following hardware:
1. raspberry pi 4
2. TLC555 that is keyed by a CW KEYER's RIG KEYING jack...(the TLC555 is powered by the PI's own 3.3v power supply via its GPiO pins
3. usb sound card with LINE INPUT - this demo uses a Behringer UCA222 the keyed 555's…
ContinuePosted on August 8, 2022 at 11:30am — 1 Comment
test using bpsk31 over ip from one op to the other to coordinate frequencies for HF QSO NOTE: NO AUDIO is heard on this video demo....visual only FLdigi provies the ENCODING and DECODING of bpsk31 Gstreamer provides the OPUS codec encoding to convert bpsk31 from and to one OP to the other here are the scripts used in this…
ContinuePosted on August 7, 2022 at 1:36pm
this video is a follow up to the first video here: https://youtu.be/RQh_4JW6adw
this video adds a CW KEYBOARD, and straight key to the Raspberry PI 4 iambic CW keyer shown in the first video... by using a 2nd keyed CPO at a different PITCH than the 1st keyed CPO in…
ContinuePosted on August 7, 2022 at 9:01am
TLC555 timer chip square wave oscillator is being 'keyed' (pin 4/pos rail) by a CW KEYER & its iambic paddles AND also being keyed by FLdigi using FLdigi's serial port keying setup via a usb serial port adapter and keying the serial port's RTS PIN Both the CW KEYER and FLDIGI are keying the diode side of an H11F1 FET OPTOisolator chip…
ContinuePosted on August 4, 2022 at 12:38pm — 1 Comment
snd-aloop
alsa-loopback cable
virtual audio cable
via a Gstreamer TEE SCRIPT to take a keyed oscillator at the mumble sound card input... filter it 1st... and then send it to two places...
1. the mumble USB sound card's output so you can monitor your own…
ContinuePosted on August 2, 2022 at 11:45am
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