USING rEvErSe iMaGe CW(riCW) MODE to minimize AUDIO GLITCHEs from poor internet performance with lots of packet dropouts...using an riCW encoder & riCW decoder the riCW encoder injects silence into an audio carrier to represent each CW ELEMENT, the riCW decoder is using CW REGENERATION to convert the silent CW…
ContinueAdded by Chuck aa0hw on March 23, 2024 at 8:00am — No Comments
using the ENB-CW method of encoding/decoding
brief test to see how well using the ENB-CW method to transmit and receive 12 hertz ELF EMF - for RADIO COMMs of a 'THROUGH THE EARTH' Cave Radio Transceiver prototype
NOTE: not shown on video is the MIXER, that up-converts the 12 hertz ENB-CW carrier to a 782 hertz…
ContinueAdded by Chuck aa0hw on May 27, 2023 at 12:42pm — No Comments
only 2 LSP Plugins are needed for DIRECT CONVERSION from VLF CW to AUDIO CW
https://lsp-plug.in/?page=manuals§ion=oscillator_mono…
ContinueAdded by Chuck aa0hw on May 8, 2023 at 8:44am — No Comments
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…
ContinueAdded by Chuck aa0hw on December 17, 2022 at 10:10am — No Comments
Brief Demo for sending QRQ CW over SONOBUS using KXstudio's Carla in "multiple clients" mode on a Raspberry Pi 4 SonoBus is also monitoring its input to be able to monitor the REGEN'd ZamGate CW sidetone in real time at near zero latency
a TLC555 is being keyed by FLdigi's serial port rts pin, TLC555 sending its audio…
ContinueAdded by Chuck aa0hw on August 17, 2022 at 10:52am — 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…
ContinueAdded by Chuck aa0hw on August 2, 2022 at 11:45am — No Comments
the Gstreamer Script used in this video example:
*************************************************
gst-launch-1.0 -v alsasrc device=hw:4 ! "audio/x-raw, format=(string)S16LE, layout=(string)interleaved, rate=(int)48000, channels=(int)2, channel-mask=(bitmask)0x0000000000000003" ! tee name=t !…
ContinueAdded by Chuck aa0hw on July 30, 2022 at 2:13pm — No Comments
Mixxx is a VARIABLE SPEED audio player that works great to slow down or speed up a QRQ CW audio file. Mixxx also has a REVIEW/rewind function that allows you to repeat the last word sent as many times as you want(by hitting the keyboard letter 'A' ...you can also repeat while slowing it down... MIXXX will change the cw frequency however....…
ContinueAdded by Chuck aa0hw on July 23, 2022 at 9:50am — No Comments
https://streammyaudio.com/live
ARCHIVED whole stream is located here: CRSnet.mp3 (Jul 12, 2022 11:44:49 UTC)
https://streammyaudio.com/archive
a CW…
ContinueAdded by Chuck aa0hw on July 12, 2022 at 11:49am — No Comments
zamgate is a used as a 'GATE', to help balance and equalize the RISE/FALL time of the original CW NOTE passing through it
a BANDPASS FILTER, finishes the job by cleaning up and reducing the unwanted/unpleasant Morse Code audio…
ContinueAdded by Chuck aa0hw on June 16, 2022 at 7:55am — 3 Comments
Brief demo of using a TESLA COIL with a ferrite core, self resonant at @ 75Khz - sending QRQ CW at 75 wpm The tesla coil primary winding is about 7 turns, fed by a 10 watt audio amp both TX/RX use soundcard SDR's with soundcards operating at 192Khz sample rate using the RECRI KEYER SDR modules and CW KEYBOARD to modulate and demodulate at…
ContinueAdded by Chuck aa0hw on March 7, 2022 at 4:43pm — 1 Comment
the encoded QRQ CW DATA is inaudible & virtually undetectable all you hear is a low volume 60 hertz signal, until the ZAMGATE DECODER is used to extract & produce actual CW NOTEs from the embedded CW KEYING DATA attached to the 60 cycle hum signal stream..... this encoding/decoding method can be used LIVE or implanted in a "safe"…
ContinueAdded by Chuck aa0hw on January 5, 2022 at 8:15am — No Comments
Experimental CW MODE - embedding CW ELEMENTs onto a VLF CARRIER by increasing the volume slightly of the VLF CARRIER per each CW ELEMENT, the process includes 5ms Rise/Fall times of the VLF CARRIER EMBED Process(uses ZamGate in sidechain mode)
a MORSE CODE keyer / keyboard APP sends its output to the TRIGGER PORT of a…
ContinueAdded by Chuck aa0hw on January 4, 2022 at 3:34pm — No Comments
SETUP an SLF CW TRANSMITTER is sending at 50 wpm using 50 hertz SLF RF going to a FERRITE ROD SLF CW TRANSMIT ANTENNA - powered by a cheap class D 30 watt audio amp with the FERRITE SLF CW TRANSMIT ANTENNA hooked up to the CLASS D audio amp's output
Another FERRITE ROD SLF CW RECEIVE ANTENNA is hooked up to the…
ContinueAdded by Chuck aa0hw on January 2, 2022 at 10:50am — No Comments
Added by Chuck aa0hw on December 24, 2021 at 2:07pm — No Comments
SQUARE WAVE to SINE WAVE by a 3 stage CW AUDIO BANDPASS FILTER setup using 3 sets of tuned ferrite rods, tuned similar in the way that an antique crystal wireless set would be tuned at the antenna stage, the passive bandpass filter middle stage, and the 3rd filter going to the 1st stage of detection...
GO FROM THIS:…
ContinueAdded by Chuck aa0hw on December 24, 2021 at 9:53am — No Comments
VBAN-RECEPTOR LITE mobile app
https://shop.vb-audio.com/en/ios-android/26-vban-receptor-lite.html
VBAN-EMITTER (Linux/raspberry pi) APP…
ContinueAdded by Chuck aa0hw on April 24, 2021 at 12:44pm — No Comments
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brief test to see how well the EAC3 CODEC can reconstruct the ON /OFF cw element framework of Morse Code from a CW KEYER sending CW at "0" hz
NOTE: test starts out at QRQ speeds, then CW speed goes down to 20wpm, gradually back up again and over 100 wpm, then back down, to give an idea of how this experimental Morse Code…
ContinueAdded by Chuck aa0hw on April 13, 2021 at 12:51pm — No Comments
brief rundown of using a large FERRITE CORE LOOPSTICK tuned ANTENNA to hook up directly to the sound card input...and then use some SDR software modules to get rid of HUM, NOISE, HISS and other EMF QRM from the house wiring emf'N into the RX antenna etc...
the ULF CW TRANSMITTER is a PI 4's audio output - going to a 30…
ContinueAdded by Chuck aa0hw on January 25, 2021 at 12:46pm — No Comments
uses a remote RASPBERRY PI 4 that hosts the LINUX CW KEYBOARD from AD5DZ - RECRI KEYER - https://github.com/recri/keyer using SSH -X on windows to bring up the PI4 CW KEYBOARD on the WINDOWS 10 DESKTOP (uses REALvnc to attach the connections from the CW KEYBOARD MIDI…
ContinueAdded by Chuck aa0hw on November 1, 2020 at 5:30pm — No Comments
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