All Blog Posts Tagged 'QRQcw' (127)


CW MAESTRO inside DOSBox-X seemed to work much better than using the native DOSBox app(for linux) the QRQ CW audio output was more stable using DOSBox-X(normal dosbox itself had lots of audio dropouts with the same settings) CW MAESTRO FULL VERSION by permission of CW MAESTRO creator/DEV available here for download(.7z file)…


Added by Chuck aa0hw on February 14, 2023 at 11:21am — No Comments

The Best FREE Morse code software CW Keyboard for a MAC - LiVE demo

using the CW KEYBOARD that is already loaded up on a Raspberry Pi4 on the local network using ssh -X via Xquartz for the mac


ssh -X into the pi,  bring up lxterminal,  migrate to the CW KEYER software APP FOLDER bin, by…


Added by Chuck aa0hw on February 8, 2023 at 10:00am — No Comments

QRQ CW 'copy by ear' PRACTICE via an online RADIO STATION(mp3) and via iCW MUMBLE(OPUS) - LIVE DEMO

brief testing and comparing MP3 to OPUS from a CASTER.FM free online Radio Station setup and the iCW MUMBLE Server/client setup

a Raspberry Pi 4 is doing the transmitting to both MUMBLE INPUT and the RADIO STATION INPUT

unixCW is providing the APP to send repeating text files at different speeds and at…


Added by Chuck aa0hw on January 26, 2023 at 1:58pm — No Comments

QRQ CW Morse Code RADIO - Python Radio Receiver - CW 'copy by ear' practice from 20 - 100 wpm

Python QRQ CW Radio Station Receiver - modified from this python script:

sending CW text files on continuous repeat using unixCW's CW program…


Added by Chuck aa0hw on January 14, 2023 at 9:43am — No Comments

LYsdr - a GREAT Linux soundcard SDR to use for HAM RADIO - LIVE DEMO using VOICE, CW, and DOMINOex22 demo of using LYSDR to demod 3 VLF frequencies at the same time using multiple instances of LYSDR and combing their demod'D audio outputs…


Added by Chuck aa0hw on December 26, 2022 at 11:13am — No Comments

Build ur own Ham Radio Virtual ionosphere with Pi4, gstreamer, QUiSK SDR, 192kHZ sample rate sndCARD

demo of setting up a pi4 to act as an RTSP virtual ham radio ionosphere SERVER that many OPs can connect to for QSO'n or just listening... this setup uses an i/q input above and below ZERO POINT by about 80 Khz worth of RF SPECTRUM - to gather together and QSO uses the gSTREAMER wavpack codec, and a gstreamer…


Added by Chuck aa0hw on December 17, 2022 at 2:09pm — 1 Comment

Remote Rig/pi2b interface\\ REMOTE OP/pi4 station\\ RIG=ELECRAFT K3S/ AFCW QRQ CW Keying\\ LIVE DEMO

REMOTE AUDIO over ip by PYTHON/gstreamer/ pi2b TCP SERVER and pi4 TCP CLIENT to SEND transmit AFCW TO RIG and receive audio from RIG on the REMOTE

OPs pi4 station pi2b is using ALSA in the PYTHON SCRIPT AFCW KEYING SETUP - uses the RECRI KEYER cw and sdr apps…


Added by Chuck aa0hw on October 20, 2022 at 8:13am — No Comments

High Performance Raspberry Pi4 CW CPO/CW Keyer(CW RE-generator) using KXstudio CARLA APP - LIVE demo

CARLA on this raspberry pi 4 is using the ALSA AUDIO ENGINE, with a USB SOUND CARD(Behringer UCA222) 48Khz sample rate, 3 periods of 64 buffer frames - for lowest possible latency for this operation

CARLA is using 1 lv2…


Added by Chuck aa0hw on October 15, 2022 at 8:37am — 2 Comments

Send QRQ CW Midi NOTE ON//NOTE OFF messages over iP using Gstreamer's ALSAMiDiSRC and FLUIDdec elements

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…


Added by Chuck aa0hw on September 21, 2022 at 10:16am — 1 Comment

QRQ CW over SONOBUS using CARLA in MULTI-CLIENT Mode: key a 555, regen & filter for SonoBus sidetone

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…


Added by Chuck aa0hw on August 17, 2022 at 10:52am — 1 Comment

High Voltage protection/insulation/isolation between RIG/CW KEYER & a PC sound card input by Pyrex Glass & induction coils

testing using 2 ferrite bobbin core inductor coils inside thick pyrex glass measuring cups to provide high voltage isolation protection between a RIG/cw keyer and a PC soundcard's input

used for sending CW AUDIO over SonoBus by keying a TWIN-T oscillator

the output of the TWIN-T goes to a class D amp…


Added by Chuck aa0hw on July 28, 2022 at 10:30am — 1 Comment

KXstudio's CARLA as a standalone APP to conduct QRQ CW over SONOBUS operations - using ALSA on a Pi4

- a Pi4 has a usb sound card with LINE INPUT/line output/headphone output

- fldigi is keying a 555 square wave oscillator(by connecting pin 4 of the 555 to its POS RAIL through an H11F1 OPTOisolator chip) using FLdigi's KEY BY SERIAL PORT RTS PIN feature and sends its audio output to the pi's usb sound card's line…


Added by Chuck aa0hw on July 25, 2022 at 9:09am — No Comments

QRQ CW 'copy by ear' PRACTICE using Mixxx with CW REGENERATION & a tracking CW audio bandpass filter

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' can also repeat while slowing it down... MIXXX will change the cw frequency however....…


Added by Chuck aa0hw on July 23, 2022 at 9:50am — No Comments

QRQ CW net over SONOBUS - recorded from their LIVE STREAM on 7-12-2022 - using a CW REGEN method on all 3 OPs sending

ARCHIVED whole stream is located here: CRSnet.mp3 (Jul 12, 2022 11:44:49 UTC)

a CW…


Added by Chuck aa0hw on July 12, 2022 at 11:49am — No Comments

QRQ CW over SonoBus - cleaning up your TX sidetone using Sonobus FX input NOISE GATE & PARAMETRIC EQ

SETUP: a TWIN-T oscillator is being keyed by FLdigi's RTS SERIAL PORT feature...

the TWIN-T has noise and harmonics

use SONOBUS's native input FX DSP apps, NOISE GATE & PARAMETRIC EQ to STOP THE NOISE and CLEAN UP THE twin-t's SIDETONE before transmitting it to the other OPs listening on your…


Added by Chuck aa0hw on July 8, 2022 at 8:35am — 1 Comment

Remote QRQ CW Keying(AFCW mode) & Receiving of a Rig(K3S) over IP using a Raspberry Pi2b & Sonobus

the PI2B, still has enough 'power' to function as a REMOTE RIG OPERATIONs interface FLrig(from the pi2b's installed apps) is used to control many functions of the K3S

using ssh -X the PI2b's FLrig GUI appears on the remote laptop's…


Added by Chuck aa0hw on June 27, 2022 at 8:21pm — No Comments

CW SIDETONE CLEANER - polish up and take the harshness out of that Sidetone with Zamgate & BP Filter

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…


Added by Chuck aa0hw on June 16, 2022 at 7:55am — 3 Comments

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