A gathering place for QRQ ops world wide to share information and experience in pursuing QRQ cw
ALL TIME = USA CENTRAL TIME
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NOTE: if you have a QRQcw NET or know of one, please tell us about it, and we will post it here
Posted by Chuck aa0hw on January 5, 2021 at 12:00pm
go to keyer.elf.org
Posted by Chuck aa0hw on November 30, 2020 at 10:08am
wireless transmission from the CW KEYER - keying a 555 at 40 Khz - to a wireless LF RF BAND software receiver - demod'N the 40 Khz CW Keyer LF BAND transmitter's CW
the TX and RX antenna are using a high Q , series/parallel resonated FERRITE BOBBIN CORE INDUCTOR COIL - @2mH each - series and parallel resonating capacitors…Continue
22 individual CW software KEYBOARDs are sending a CW text file from 500 hertz up to 11Khz
separated individually by 500 hertz from one signal to another
to pick a CW SPEED/signal that you would like to copy by ear - use your SDR
- here is a quick example of doing that here with a…Continue
60 wpm test - classic R-C exponential envelope VS Raised Cosine - for copying by ear - which do you prefer ?
NOTE: to get the RAISED COSINE edges from YPlog, its RISE/FALL time was set to zero and sent through this simple Gstreamer CW AUDIO BANDPASS filter…Continue
Posted by Chuck aa0hw on November 18, 2020 at 11:00am
Please feel free to start any QRQcw topics or leave comments for the discussions already posted. You may also load pictures or videos relating to qrq cw operations. Thank you for your contributions.
Using Mumble( open source skype like voip program )and FLdigi to communicate morse code over the internet. LIVE RECORDING from 2009. [ Missouri to Michigan internet path ]
SETUP: using a virtual audio cable, we connect the output of FLDIGI to the input of MUMBLE. We both connect to a MUMBLE SERVER and instead of using MICROPHONES, we send morse code audio tones at high quality, high fidelity, and low latency, to each other. The audio is FULL DUPLEX and allows for good QSK response during the conversation for breaking in.
Hello all,As a fun project I was writing a CW player for my Iphone over Christmas. A text file is converted to MIDI, MIDI is played out as audio on the Iphone. I am using Apple's MIDI player…Continue
Started by Gerd Groos. Last reply by Gerd Groos Jan 19, 2020.
In order to properly exercise, the standard keyboard should be altered.I am using a belgian AZERTY keyboard with the QRQ Application. (OS is Ubuntu 18.04.1)In order to type numbers I need to access…Continue
Started by Michel Spelier. Last reply by Michel Spelier Sep 14, 2018.
an A / B test between Linear and Exponential QRQ CW audio tone waveformsWhich waveform do you think sounds best ?SETUP for this test: FLdigi is sending a text file at 71 wpm from TOM's famous article…Continue
Started by Chuck aa0hw Dec 8, 2017.
Hi guys,my personal remaster of tahrpup 6.0.6 live cd now full ham radio software digital mode, last qsstv , qtel(echolink), wsjtx ft8 mode and of course iCW full working using fldigi keyboard,…Continue
Started by i8cee -Salvatore Cecere Oct 27, 2017.
I made a screen recording of a qso to demonstrate the serial interface between keyer / decoder of my ChipKit / PIC32 keyer. Both sides of the qso are displayed. The keyer switches the text color to…Continue
Started by Chuck Broadwell, W5UXH. Last reply by Joe May 11, 2016.
Hi all,This is my 1st post here so I hope I'm doing this right...After looking on the internet for this subject with no luck, I crossed an email with an well known american veteran CW operator (his…Continue
Started by Artur Marcal. Last reply by Artur Marcal Apr 19, 2016.
A few years ago I built a Sienna for K6KX (Fred), a long story that I will not go into.The past few days Fred has been testing it on our sked. Tonight I did a recording that can be downloaded from…Continue
Started by Chuck Broadwell, W5UXH. Last reply by Chuck Broadwell, W5UXH Jun 23, 2020.
This project began life a bit before Hjalmar posted his Arduino decoder project. I had barely begun to migrate my keyer software to the ChipKit PIC32 boards (Max32 and Uno32) at that time. I…Continue
Started by Chuck Broadwell, W5UXH. Last reply by Chuck Broadwell, W5UXH Jun 30, 2016.