AUDIO RECORDINGS OF QRQ CW NETs


Comment by Bill Hunt, WA8OKR on September 6, 2011 at 5:34pm

This FOG net recording and play back system is great listening practice it sure beats being put to sleep by the boring word files.Thanks to Chuck for all the hard work and to the FOG for providing the time and live practice.

73 De Wa8okr

Comment by Chuck aa0hw on December 21, 2011 at 8:15pm

Comment by Chuck aa0hw on December 21, 2011 at 8:18pm

Comment by Chuck aa0hw on January 24, 2012 at 11:37am

Comment by Brett Miller on May 31, 2012 at 12:31pm

Hey Chuck, what's are the approx. speeds you guys are running on the QRQcw101net?  80-100?

Comment by Brett Miller on May 31, 2012 at 12:33pm

At 100 wpm the word "the" sounds like, "pah purrr pip"  hihihihihihi

Comment by Brett Miller on May 31, 2012 at 12:36pm

This is some really good stuff, thank you.

Comment by Chuck aa0hw on June 5, 2012 at 8:02am

Yes, the speeds for this net started at 80 wpm, to warm up a bit, with the goal of

being able to send/type over 100 wpm sometime during the net ..thus the reason

for the name 101 ...sending/receiving cw over 100 wpm...

Comment by Brett Miller on June 5, 2012 at 9:53am

Aha...very nice.  I could hang with you guys in that (with sending)...especially due to the 80 wpm warmup, only problem is, copying gets to be very hard for me at  70-80 and I doubt I can hang even at 60-65 yet, but who knows?  I would like to be able to get in there with you guys and be able to copy 80-100 by at least two years from now.  It's a vague goal anyway.  73. -Brett

Comment by Chuck aa0hw on April 23, 2016 at 3:44pm

Here is a live recording of a recent qrq cw online net on 4-23-2016


qso between kf7cx and aa0hw using Mumble. Joe was keying a 555 chip to send out a 700 hertz square wave, followed by a hipermite cw bandpass filter http://www.4sqrp.com/HiPerMite.php 
to send qrq cw audio tones to the Mumble Input. 

Chuck was using the LINUX SOFTWARE CW KEYER , TWCW: http://wa0eir.bcts.info/twcw.html

for more info see 
https://sites.google.com/site/icwoip/

Comment by Rich Langford on April 24, 2016 at 5:01am

Thank you for letting us hear your fb Morse, it is an inspiration to listen to and very interesting as well. More please as I use it for practice every day on an old lap top by the bed (with headphones so no qrm from xyl, hi),

73 Rich G4FAD..

Comment by Chuck aa0hw on June 6, 2016 at 6:25am

Here is a live recording of a recent qrq cw online net on 6-4-2016

Streamed live on  YouTube  Jun 4, 2016

iCW Saturday online qrq cw net over Mumble
(streamed live and recorded by YouTube)
[ this qso took place on 6-4-2016 ]

qso between kf7cx and aa0hw using Mumble. Joe was keying a 555 chip to send out a 700 hertz square wave, followed by a hipermite cw bandpass filter http://www.4sqrp.com/HiPerMite.php 
to send qrq cw audio tones to the Mumble Input. 

Chuck was using the LINUX SOFTWARE CW KEYER , YPLog 
using WINE on LINUX MINT 17.3 

for more info see 
https://sites.google.com/site/icwoip/

Comment by Chuck aa0hw on July 23, 2016 at 3:09pm

Here is a live recording of a recent qrq cw online net on 7-23-2016

iCW Saturday online qrq cw net over Mumble
[ this qso took place on 7-23-2016 ]

qso between kf7cx and aa0hw using Mumble. Joe was keying a 555 chip to send out a 700 hertz square wave, followed by a hipermite cw bandpass filter http://www.4sqrp.com/HiPerMite.php
to send qrq cw audio tones to the Mumble Input.

Chuck was using the LINUX SOFTWARE CW keyer , YPLog
using WINE on LINUX MINT 17.3 to send keyboard cw audio tones into the mumble input AND also had a st key, and paddles connected to the input of the MIC jack for sending their tones into the mumble input too...being able to operate ST KEY, PADDLES, and CW KEYBOARD, all ready to send at any time...

In this qso , aa0hw, was using a software cw regeneration technique...taking the original square wave from a micro powered 555 chip, the css555, and keying that css555 with a straight key, he also had an ULTRA PICO KEYER and paddles hooked up, and with the stereo MIC INPUT, the audio output tones of ULTRA PICO KEYER went to the left channel of the MIC INPUT JACK of the laptop, the css555 chip was sending its st key tones to the right channel of the MIC INPUT jack...both L and R channels of input were routed to the mumble input for transmitting after being filtered, and regenerated by software apps in LINUX.

The MUMBLE OUTPUT was also regenerated by the same software apps, and the original mumble output waveform could be seen on the oscilloscope pictured in the video on TOP and the regenerated will show on the bottom of the SCOPE APP.

 

Comment by Chuck aa0hw on September 9, 2016 at 2:33pm

Here is a live recording of a qrq cw qso on 20 METERS between 2 cw ops using an ELECRAFT K3

W5UXH and AA0HW
Both using an ELECRAFT K3 at FULL QSK with the K3 QRQ MODE enabled. Recorded "LIVE" at w5uxh's ham radio station.

NOTE: during the qso, a short test by aa0hw sending a short message at 120 wpm to test the upper levels of the K3's ability to QrQ.

W5UXH was using his own design for his cw keyboard cw keyer
AA0HW was using his k1el k40 cw keyboard cw keyer

The audio in this video was edited by aa0hw applying some "normalization" - set to (-6b) - to the original audio file, and then applying a slight amount of audio bandpass filtering and audio AGC.

Comment by Joe on September 10, 2016 at 6:33am

Chuck

Where do the 'blips' on the baseline shown above come from? Are they artifacts? I get them on my oscilloscope while monitoring my CW waveform using a dummy load on the Omni D. Chuck, W5UXH, recorded them while monitoring my signal over the air years ago using, I believe, Audacity.

What is the WPM upper limit of the K3 in QRQ mode? Is the upper limit greater with the K3s?

Joe W3GW

Comment by Chuck aa0hw on September 10, 2016 at 11:02am

Hi Joe, i think the blips are just some receive audio getting through...i don't hear any artifacts while listening to to it.  Regarding QRQ LIMITS on the K3 and K3S, ( i have the K3 with all the "S" upgrade boards).  I just published an article about qrq with the K3S  on our website here. http://qrqcwnet.ning.com/profiles/blogs/elecraft-k3s-qsk-qrq-perfor...

My K3(S) starts "breaking down" and sending ARTIFACT SPIKES just above 90wpm when using FULL QSK and with the K3 QRQ MODE enabled.  So I guess that 90 wpm is about my qrq limit on the K3(S) that I have, which does have the latest firmware updates as of April 2016.

Comment by Joe on September 11, 2016 at 7:46am

Even I can hear the difference at 90 to 100 wpm.

OK, say I am a DXer and I want to use the K3 or K3s in split mode, meaning I am going to call the DX station up by say 10 khz. What is the maximum keying speed I can use without the code elements suffering?

So far, I think I will keep my Omni D.

Joe W3GW

Comment by Chuck aa0hw on October 22, 2016 at 3:49pm

Here is a live recording of a QRQ CW online QSO on 8-22-2016

Comment by Chuck aa0hw on October 29, 2016 at 3:39pm

Here is a live recording of a QRQ CW NET that took place online over Mumble VOICE CHAT on 10-29-2016

iCW Saturday online qrq cw net over Mumble
[ this qso took place on 8-29-2016 ]
- qso between kf7cx and aa0hw using the Mumble Voice Chat App -

Joe was keying a 555 chip to send out a 700 hertz square wave, to the input of a hipermite cw bandpass filter http://www.4sqrp.com/HiPerMite.php
to send qrq cw audio tones from his 555 chip/hipermite hardware audio output , over to the Mumble Input, Joe connects an audio cable from the audio output RCA JACK of his 555-/hiptermiteFILTER, over to the LINE INPUT jack of his computer's sound card.

Chuck was using FLdigi software to send cw audio tones to the mumble input by using the JACK AUDIO CONNECTION KIT connection bay...(LINUX MINT OS)

Even over the internet, there is a type of qrn, some weird noises that jump in, from packet delays, packet losses etc... you will hear a few of those during this qso... (i was using WIFI , and there is always more iQRN, than if i had used wired ethernet)

Comment by Chuck aa0hw on November 12, 2016 at 3:30pm

Here is a live recording of a QRQ CW NET that took place online over Mumble VOICE CHAT on 11-12-2016

iCW Saturday online qrq cw net over Mumble
[ this qso took place on 11-12-2016 ]
- qso between kf7cx and aa0hw using the Mumble Voice Chat App -

Joe was keying a 555 chip to send out a 700 hertz square wave, to the input of a hipermite cw bandpass filter http://www.4sqrp.com/HiPerMite.php
to send qrq cw audio tones from his 555 chip/hipermite hardware audio output , over to the Mumble Input, Joe connects an audio cable from the audio output RCA JACK of his 555-/hiptermiteFILTER, over to the LINE INPUT jack of his computer's sound card.

Chuck was using FLdigi software to send cw audio tones to the mumble input by using the JACK AUDIO CONNECTION KIT connection bay..on a RASPBERRY PI 2b using Raspbian Jessie

Even over the internet, there is a type of qrn, some weird noises that jump in, from packet delays, packet losses etc... you will hear a few of those during this qso...

This RASPBERRY PI 2 did a good job of keeping up the qrq pace for its own audio processing using FLdigi and Mumble AND the simplescreenrecorder all at the same time...

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