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
ultra-LOW latency REMOTE RIG CW OPERATIONs from a remote laptop on the local area 'wired' network, through router & switches using the NETJACK 2, setup demo from this video:…
ContinueAdded by Chuck aa0hw on March 21, 2024 at 8:52am — No Comments
RECRI KEYER's MIDI INPUT KEYED CW KEYER:
https://github.com/recri/keyer
AUDIO TO Midi CW NOTE OUTPUT converter by REAPER/reagate VST plugin…
ContinueAdded by Chuck aa0hw on December 28, 2023 at 1:34pm — No Comments
Added by Chuck aa0hw on December 24, 2023 at 7:55am — No Comments
QRQ CW example, by, AUDIO OVER iP via a GSTREAMER raspberry pi TCP AUDIO SERVER and a GSTREAMER laptop TCP AUDIO CLIENT, organized by two PYTHON scripts.
- you can download the TCP SERVER and CLIENT python scripts here:
PYTHON/gstreamer TCP SERVER:…
ContinueAdded by Chuck aa0hw on November 22, 2023 at 3:28pm — No Comments
brief demo of using a simple DIODE/TRANSFORMER frequency doubler to get 40Khz CW out of a pi4 headphone jack, by sending to the diode doubler input, 20Khz from the pi's headphone jack
Pi4 HEADPHONE PHONE to diode/transformer/frequency doubler to class D amp input, CLASS D OUTPUT to a series resonant cap to a FERRITE ROD…
ContinueAdded by Chuck aa0hw on July 21, 2023 at 12:43pm — 1 Comment
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
with high Q antennas systems for RX/TX there is too much ringing & cw element elongation for good copy retrieval from the SDR down conversion from 5Khz to CW AUDIO... an alternative to straight mixing is to REGENERATE the CW from its unusable ringing cw elements...however, the elements volume peaks have to be equalized in volume by a DSP…
ContinueAdded by Chuck aa0hw on May 20, 2023 at 11:45am — No Comments
with high Q ringing on a QRQ CW signal, by high Q filters &/or high Q antennas, you are going to get CW ELEMENT RINGING and CW ELEMENT ELONGATION which distorts the typical wave shape of the DITs and DAHS... especially on the DITs...the elongation will decrease its volume since the element takes to long to reach peak output compared to a…
ContinueAdded by Chuck aa0hw on May 18, 2023 at 9:17am — No Comments
using a biploar tesla coil with a large ferrite core, 30 windings primary input, and 300 turns secondary output both input and output are tuned for MAX signal output at 21Khz
- input is tuned by a .1uF series resonating CAP, and output is tuned by a .001uF parallel resonating CAP
QRQ CW example for…
ContinueAdded by Chuck aa0hw on April 13, 2023 at 8:06am — 1 Comment
uses RECRi KEYER CW & SDR modules: https://github.com/recri/keyer RECEiVE
OP can choose at what CW AUDIO Pitch whey want to listen to, with the RECRi KEYER's SDR MIXER MODULE
NOTE: OPUS CODEC will not work to send Contour…
ContinueAdded by Chuck aa0hw on March 22, 2023 at 7:58am — No Comments
UNiXcw using this script to keep the TEXT FiLE to CW sending on an auto-repeating endless cycle, (until you hold CTRL/c down until it stops) qrq@qrq:~/Downloads/unixcw-3.6.0/src/cw$ while true; do (./cw -d hw:1,1,1 -f teslalecture1.txt -w 60 -k 50 -t 30000 -v 90); sleep 1; done…
ContinueAdded by Chuck aa0hw on March 17, 2023 at 9:01am — No Comments
FERRITE TX ANTENNA is max tuned for PEAK SIGNAL OUTPUT on 30Khz VLF CW input windings of ferrite rod TX antenna is SERIES TUNED by CAPs and output windinws of ferrite rod TX antenna is PARALLEL TUNED by CAPs FERRITE
RECEIVE ANTENNA is max tuned for PEAK SIGNAL RECEIVE signal on 30Khz VLF CW by a .1uF cap and the BEST coil…
ContinueAdded by Chuck aa0hw on March 14, 2023 at 1:12pm — 1 Comment
since the TRANSMITTER is not using full duration CW ELEMENTs(using AFCW MODE)(a2) Battery Drain should be less when operating portable via PDM-CW methods
ZAMGATE is the PDM-CW encoder: https://www.zamaudio.com/?p=976
GSTREAMER SCRIPT provides…
ContinueAdded by Chuck aa0hw on March 8, 2023 at 2:16pm — 2 Comments
instead of sending pure sine wave CW notes over Mumble, "GAUSSIAN NOISE" CW NOTES are used to see if GAUSSIAN NOISE CW audio performs better over iP on Mumble(OPUS CODEC), than pure sine wave CW audio
https://sites.google.com/site/icwoip/
CW…
ContinueAdded by Chuck aa0hw on March 8, 2023 at 9:25am — No Comments
brief demo of sending Midi CW over the internet to key midi input CW sine wave oscillator APPs; using a PRIVATE ZEROtier network where you don't have to port forward routers, but you do have to be an accepted, authorized member of the ZEROTier NETWORK that is being used more details of setting up
NETJACK from…
ContinueAdded by Chuck aa0hw on February 16, 2023 at 11:50am — No Comments
Using just a Raspberry PI and the RECRI KEYER's software CW KEYBOARD
with the Pi's own native bcm2835 headphone output
This setup is QRQ fast from TYPING on the SCREEN and hearing the CW AUDIO SIDETONE from the pi4's headphone jack …
ContinueAdded by Chuck aa0hw on February 9, 2023 at 8:40am — 1 Comment
This method uses 3Khz VLF RF CW over ip that is encrypted & stealth modulated
using MicroModulation methods to encode stealth, LiVE text messaging data onto an a VLF 3kHZ AM CARRIER wave .. can't see anything, or hear anything - sounds and looks like a 'dead' carrier wave with nothing on it...
METHODS the secret…
ContinueAdded by Chuck aa0hw on January 18, 2023 at 1:55pm — No Comments
demo of using an iphone as a QRQ CW SonoBus Receiver - to choose & listen to multiple CW TEXT files(up to 18 different text files) being sent by unixCW's CW program from a pi4 'audio over WiFi' Transmitter NOTE: SonoBus, in MULTI-CHANNEL input mode, can send 18 different, individual audio sources at the same time, and the iphone sonobus…
ContinueAdded by Chuck aa0hw on January 16, 2023 at 10:16am — No Comments
Added by Chuck aa0hw on January 5, 2023 at 1:29pm — No Comments
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