A gathering place for QRQ ops world wide to share information and experience in pursuing QRQ cw

QRQ CW NETs

ALL TIME =  USA CENTRAL TIME


daily on    7018   4 pm

NOTE: if you have a QRQcw NET or know of one, please tell us about it, and we will post it here

Blog Posts

copying QRQ CW in a TUNED RESONANT HIGH "Q" system - DEMO a GATE between 2 CW audio bandpass filters

QRQ CW TRANSMITTER & RECEIVER are both using HIGH Q resonant systems on their Ferrite Loopstick ANTENNAs


PROBLEM - HIGH Q will cause ringing and MUSH on the RECEIVE signal


SOLUTION - use a GATE between 2 CW AUDIO BANDPASS filters

Posted by Chuck aa0hw on May 16, 2022 at 10:10am

DIY QRQ CW VLF TRANSMITTER & RECEIVER for Spelunking Loving QRQ CW OPs: Through The Earth(TTE) comms

this video is a follow up video form the 1st one here:

https://youtu.be/VoPIm9EdMqo

this video demo's the QRQ CW high speed morse code capability

of this TTE COMMUNICATIONS SYSTEM at VLF…

Continue

Posted by Chuck aa0hw on April 25, 2022 at 1:10pm — 1 Comment

ATTENTION: QRQ CW NET OPs - can't hear the other OP(s) ? then use this FREE websdr setup and send the weblink

if you are using WEB SDR's to hear the other OP,   and don't like the long delay, try setting up a local web sdr using the following video's method and the free STREAMMyAUDIO service...then you can simulcast your TRANSMIT CW SIDETONE to your headphones AND this free STREAMING SERVICE so that any other OP(s) can go to the web link on the STREAMmyAUDIO's LIVE web page and pick up your RIG's TRANSMIT CW audio in almost REAL TIME with very low delay...  here is a LIVE demo of this setup in…

Continue

Posted by Chuck aa0hw on April 20, 2022 at 9:55am — 1 Comment

UltraSonic Morse Code EMF COIL EMITTERs sending QRQ CW at a frequency of 21.121 Khz & speed of 82wpm

brief demo of sending QRQ CW via ULTRASONIC EMF using TWIN FERRITE BOBBIN CORE INDUCTOR COILs as the Ultrasonic EMF Emitters

Posted by Chuck aa0hw on April 19, 2022 at 1:29pm

 

WELCOME TO QRQcw

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.

N3ZNkeys.com website - see all of his latest CW KEYS

iCW - 2012 - How to send morse code over the internet on WINDOWS 7 : THE BASIC SETUP

LIVE RECORDING of a QRQ CW QSO - MORSE CODE OVER THE INTERNET - from 2009

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.

Forum

QRQ CW on mobile phone: suitable MIDI soundfonts? Experiences? 2 Replies

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

Tags: Soundfont, IoS, MIDI

Started by Gerd Groos. Last reply by Gerd Groos Jan 19, 2020.

Regenerative CW 3 Replies

Hi,I read with interest Joe KF7CX article about regenarative CW.I struggled a little bit to find out all about circuitry, but finally I think i have a good idea of how to build a complete interface.I…Continue

Started by F6EEQ. Last reply by F6EEQ Jan 2, 2020.

A-TRONIX Keyboards

Does anyone know anything about A-TRONIX keyboards?Joe W3GWContinue

Started by Joe Oct 13, 2019.

Wanted: proper AZERTY keyboard setting 2 Replies

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.

TAKE THE QRQ CW TEST - Which is better to copy - LINEAR or EXPONENTIAL raised cosine edges

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

Tags: morse code, raised cosine, QRQcw, qrq cw

Started by Chuck aa0hw Dec 8, 2017.

Tahrpup 6.0.6 live dvd remaster by i8cee full ham radio iCW for ever.....

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

Tags: software, digital

Started by i8cee -Salvatore Cecere Oct 27, 2017.

Get on the Air

I have enjoyed the recordings Chuck has made of the on the air QSOs of my fellow QRQ ops.Lets get more of you on the air with your keyboards. Many of us do not have internet connections that allow…Continue

Started by Joe Oct 10, 2017.

CW Code Sound plus Character Sound

======================= 00000000000000000000000 =====================I made all new files, this time .mp4 video files (punctuation and prosigns coming up). Added already.I hope these files help to…Continue

Started by Carlos (Kal) Lemmi Feb 5, 2017.

SDR online network

There is an interesting network of wideband receivers with close to 100 different sites that can be used for tuning the bands around the world.  HA7ILM,  András Retzler, operates a web site that…Continue

Started by Chuck Broadwell, W5UXH Dec 28, 2016.

QRQ on the Air 1 Reply

I have been keeping on the air skeds with some old masters of QRQ for a while. I would encourage anyone interested in QRQ to get on the air with a like minded soul. While I do use my mp3 files and…Continue

Started by Joe. Last reply by Rich Langford Nov 29, 2016.

CW Letter Groups 1 Reply

I made this list of 97 common letter groups as an aid for learning mind copying.I appreciate your comments.CW Letter Groups…Continue

Tags: learning-cw, cw-mind-reading

Started by Carlos (Kal) Lemmi. Last reply by Joe Nov 16, 2016.

Ben Russell, N6SL, SK

I have sad news. Ben Russell, N6SL, passed away last week after a short illness. Ben was a devoted CW operator and a member of this group. He and I kept a sked for many decades using our old…Continue

Started by Joe Jun 9, 2016.

Video with text display of QRQ QSO: W5UXH - K6KX 1 Reply

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.

Join the new skype group

https://join.skype.com/j0gEQRAWuRMgWe have created a skype group where we can chat about where to find a qrq cw fellow to chat with on the band…Continue

Started by Hjalmar Skovholm Hansen Feb 22, 2016.

QSK linear amps... 1 Reply

Hi,hope it is no off-topic so much...Does anybody know if PA1000 amplifier from Juma has fully working, smooth QSK able to operate at QRQ please?I will be happy for comments and experiences from…Continue

Started by Petr Ourednik. Last reply by Joe Jan 16, 2016.

HNY2016 from OK1RP

Hi all,I wish the best, healthy, happy and prosperous New Year 2016! See you on the air CW quite often... Best 73 to all friends.Petr, OK1RPContinue

Started by Petr Ourednik Jan 1, 2016.

The "Crowing Rooster” CW QSO ending 8 Replies

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.

DZKIT Sienna at 70 WPM 7 Replies

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.

The Squeeze keyer

HI guysIn the good old days there was a danish keyer called THE SQUEEZE KEYER.They did use it in the navy and army and it is almost Iambic B but with only one DIT memory.It should give you a better…Continue

Started by Hjalmar Skovholm Hansen May 27, 2015.

Combined Keyer / Keyboard / Decoder 8 Replies

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.

 
 
 

Latest Activity

Chuck aa0hw posted a blog post

copying QRQ CW in a TUNED RESONANT HIGH "Q" system - DEMO a GATE between 2 CW audio bandpass filters

QRQ CW TRANSMITTER & RECEIVER are both using HIGH Q resonant systems on their Ferrite Loopstick ANTENNAsPROBLEM - HIGH Q will cause ringing and MUSH on the RECEIVE signalSOLUTION - use a GATE between 2 CW AUDIO BANDPASS filtersSee More
Monday
Chuck aa0hw posted a blog post

Raspberry PI 4 complete CW KEYER(iambics, st key & keyboard) using free software from LSP & Recri

https://lsp-plug.in/?page=manuals&section=trigger_midi_monohttps://github.com/recri/keyerCW KEYER SETUP overview: 4 different 555 timer chip oscillators that have been set to different individual frequencies - are "keyed" directly - by iambic paddles( dit side & dah side) and also by a straight key and also by a CW KEYBOARD using its RIG KEYING Output jack that…See More
May 10
Chuck aa0hw replied to Marc Vaillant's discussion What circuit for computer audio out to key rig?
"Here is a LIVE DEMO of an Audio Derived CW Keying Switch Circuit KEYING a RIG's CW JACK SEUTP: in this demo, FLdigi is sending out a CW KEYING TONE at 1Khz using FLdigi's RT QSK feature/function the input of the SWITCH rectifies and…"
Apr 27
Chuck aa0hw commented on Chuck aa0hw's blog post DIY QRQ CW VLF TRANSMITTER & RECEIVER for Spelunking Loving QRQ CW OPs: Through The Earth(TTE) comms
"Here is a demo of using multiple TUNED passive FERRITE ROD ANTENNAS to increase the 8Khz VLF CW signal strength significantly which each additional passive ferrite ROD antenna added, each contributing its VLF 8KHZ TUNEd CAPTURE and RE-RADIATION to…"
Apr 27
Chuck aa0hw posted a blog post

DIY QRQ CW VLF TRANSMITTER & RECEIVER for Spelunking Loving QRQ CW OPs: Through The Earth(TTE) comms

this video is a follow up video form the 1st one here:https://youtu.be/VoPIm9EdMqothis video demo's the QRQ CW high speed morse code capabilityof this TTE COMMUNICATIONS SYSTEM at VLFhttps://www.cdc.gov/niosh/mining/UserFiles/workshops/commtrack2009/ThroughTheEarth-Yenchek.pdftesting an 8Khz Raspberry PI 4 VLF CW transmitter at 8Khz to operate…See More
Apr 25
Helmut Klein updated their profile
Apr 24
David Probst was featured
Apr 24
David Probst is now a member of QRQcw
Apr 24

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