A gathering place for QRQ ops world wide to share information and experience in pursuing QRQ cw
ALL TIME = USA CENTRAL TIME
Saturday: 3532 6 pm
Sunday: 3532 6 pm
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 May 31, 2020 at 2:04pm
this is a follow video to this one in this series:
https://youtu.be/YCJpS0kCbQ0the PC's native MOBO sound card was set to 192Khz to enable direct 88Khz CW TRANSMIT from the AD5DZ CW KEYBOARD sending a text file
the LF RF 88Khz output of the PC's sound card goes to the input of the LOXJIE A10…Continue
Posted by Chuck aa0hw on May 22, 2020 at 1:43pm
brief experiment to see if by using the maximum sample rate of a sound card, 192Khz, would allow sending QRQ CW at 96 Khz(the highest frequency possible at 192Khz sample rate) at 96 wpm
Gstreamer scripts are used by the TRANSMITTER and RECEIVER
- TCP CW LF RF over IP -
Posted by Chuck aa0hw on May 17, 2020 at 6:58am
1. send AFCW MODE
2. use this GSTREAMER BANDPASS FILTER between your CW KEYER's audio output and the RIG's LINE INPUT
gst-launch-1.0 jackaudiosrc ! queue ! audioconvert ! audiowsincband mode=band-pass lower-frequency=600 upper-frequency=800 length=700…
Posted by Chuck aa0hw on May 16, 2020 at 7:43am
VLF BAND TEST on 10101 Hz
20 watt VLF AMP to compact DELTA LOOP ANTENNA
received by a Ferrite rod RX VLF antenna connected directly to this recording laptop's MIC INPUT jack, demodulated from VLF into CW AUDIO by the AD5DZ SDR APPs: LO-MIXER & FILTER modules
CW TRANSMIT VLF RF Gstreamer BANDPASS FILTER script…
Posted by Chuck aa0hw on May 9, 2020 at 4:40pm
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.
Virtual Serial Port Kit -
create virtual serial ports connected via a virtual null-modem cable.
Serial Port Splitter -
share dataflow of one serial port among several applications.
Network Serial Port Kit -
access remote serial devices over local network or the Internet.
USB over Network -
share and access USB devices over local network or the Internet.
NOTE: A special provision has been made available by FABULTECH to official ham radio operators. See this article for more details about this incredible offer:
Invite a friend(s) to join you at this link and have a morse code qso with them
All you have to do is produce a nice sidetone, and run an audio cable from it to the MIC INPUT or LINE INPUT of your soundcard.
When you click on this link it will ask your permission to use your MIC, say YES and start sending morse
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.
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 Aug 6, 2015.
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.