Chuck aa0hw

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Latest Activity

Chuck aa0hw posted a blog post

QRQ CW over Google DUO - LIVE demo - 60 wpm QRQcw Keyboard + paddles & Straight Key

testing GOOGLE DUO's ability to send CW over the internet, and finding the best settings to keep GOOGLE DUO from degrading the CW AUDIO TONES from its internal noise filtering, AGC and echo cancellation engines... (to stop Google Duo from doing that, a very tiny volume of low freq sine wave was applied(7.83 hz) and then the CW was also sent at a very low volume(-50 db) ...on the receive side, it was re-amplified to a final volume of about -6 db)…See More
yesterday
Chuck aa0hw posted a blog post

QRQcw send/receive over ip test using the Jitsi Meet WebRTC App

end a text file from CWop1 over to CWop2, both using Jitsi Meet App for connecting online for a Morse Code audio QSO...turning off WEBCAM to save CPU usage and also using a specialized Jitsi Meet script that preserves the ORIGINAL CW AUDIO :…See More
Jun 26
Chuck aa0hw posted a blog post

Raspberry PI 4 as a remote RIG over ip AFCW mode CW RIG keying interface - network stability test

sending a TEXT FILE at 60 wpm, from the REMOTE OP's PC, to a RASPBERRY PI 4 that is using the RIG's internal USB SOUND CARD as its own sound card....this test uses an RTSP SERVER:CLIENT audio over ip setup... the CW AUDIO you hear during this test is from the PI 4's TRANSMIT AUDIO MONITOR feed - going back to the REMOTE OP to get the PTT to activate before the CW TONE arrives, a 5555 hz ptt tone is used at a low volume, just enough to activate the PTT vox circuit of the RIG(ELECRAFT K3S) NOTE:…See More
Jun 3
Chuck aa0hw posted a blog post

Raspberry Pi 4 - remote QRQ CW Keyboard using the AD5DZ recri keyer APPs + ZitaNJbridge

zitaNJbridge provides the near zero latency audio over ip link between the RIG/pi4 interface and the remote OP's desktop https://kokkinizita.linuxaudio.org/linuxaudio/recri keyer's CW Keyer APPs used from :https://github.com/recri/keyerssh -X used to bring the PI's CW KEYBOARD onto the desktop of the remote OP...(instead of typing on a VNC screen)the recri keyer APP filters are adjustable…See More
May 31
Chuck aa0hw posted a blog post

Using the LOXJIE A10 60 Watt Class-D Audio Amplifier as an 88Khz LF Band QRQ CW Transmitter AMP

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 filethe LF RF 88Khz output of the PC's sound card goes to the input of the LOXJIE A10 Amplifier, the output of the LOXJIE A10 Amplifier goes to the input of a 4/1 ferrite impedance transformer, the output of the ferrite transformer is - series cap…See More
May 22
Chuck aa0hw commented on Chuck aa0hw's blog post QRQ CW over 100 wpm - tips, techniques and specialized QRQcw GEAR
"Here is another video example of QRQ CW over 100 wpm - this time using a PC SOUND CARD LF BAND transmitter and a high Q FERRITE CORE receive antenna: brief test to see how well QUISK SDR could pick up a QRQq CW signal sent from a QRPp PC sound…"
May 18
Chuck aa0hw posted blog posts
May 17
Chuck aa0hw posted a blog post

experimental QRQ CW TRANSMIT FILTER to achieve a very narrow RF bandwidth on QRQ CW TRANSMIT - VLF BAND TEST

VLF BAND TEST on 10101 Hz20 watt VLF AMP to compact DELTA LOOP ANTENNAreceived 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 modulesCW TRANSMIT VLF RF Gstreamer BANDPASS FILTER script used:gst-launch-1.0 jackaudiosrc ! queue ! "audio/x-raw,channels=1,rate=48000,format=F32LE" ! audioconvert ! audiowsincband mode=band-pass lower-frequency=9801 upper-frequency=10301…See More
May 9

Profile Information

Your Call Sign
aa0hw
How many years have you been performing QRQ CW
about 24 years
What speed do you like to run QRQ CW
between 60 - 110 wpm
Your favorite key, paddle or bug
I have a MERCURY paddle
Your favorite cw keyboard
I like the MICROSOFT COMFORT CURVE 2000 for typing cw

http://images.pcworld.com/howto/graphics/124948-2406p140-1b.jpg
Your favorite cw sending software
FLdigi, YPLog & the AD5DZ software CW Keyboard
Your Rig, Antenna and RF Power
Elecraft K3S, 100 foot each leg of a dipole about 25 feet high
Your QSK preferences
Full QSK
Your favorite headphones or speakers for listening to cw
Closed back headphones
What has been your most effective way of training practice, to copy and send qrq cw
using FABIAN's QRQ app for sending random words and using a variable cassette player to listen to CW TAPES made by FABIAN's EBOOK2CW app

HERE IS THE NEXT WORLD CHAMPION QRQcw OP


Chuck aa0hw's Photos

Chuck aa0hw's Blog

QRQ CW over Google DUO - LIVE demo - 60 wpm QRQcw Keyboard + paddles & Straight Key

testing GOOGLE DUO's ability to send CW over the internet, and finding the best settings to keep GOOGLE DUO from degrading the CW AUDIO TONES from its internal noise filtering, AGC and echo cancellation engines... (to stop Google Duo from doing that, a very tiny volume of low freq sine wave was applied(7.83 hz) and then the CW was also sent…

Continue

Posted on July 5, 2020 at 7:51am

QRQcw send/receive over ip test using the Jitsi Meet WebRTC App

end a text file from CWop1 over to CWop2, both using Jitsi Meet App for connecting online for a Morse Code audio QSO...turning off WEBCAM to save CPU usage and also using a specialized Jitsi Meet script that preserves the ORIGINAL CW AUDIO :…

Continue

Posted on June 26, 2020 at 9:37am

Raspberry PI 4 as a remote RIG over ip AFCW mode CW RIG keying interface - network stability test

sending a TEXT FILE at 60 wpm, from the REMOTE OP's PC, to a RASPBERRY PI 4 that is using the RIG's internal USB SOUND CARD as its own sound card....this test uses an RTSP SERVER:CLIENT audio over ip setup... the CW AUDIO you hear during this test is from the PI 4's TRANSMIT AUDIO MONITOR feed - going back to the REMOTE OP to get the PTT to…

Continue

Posted on June 3, 2020 at 8:33am

Raspberry Pi 4 - remote QRQ CW Keyboard using the AD5DZ recri keyer APPs + ZitaNJbridge

zitaNJbridge provides the near zero latency audio over ip link between the RIG/pi4 interface and the remote OP's desktop https://kokkinizita.linuxaudio.org/linuxaudio/

recri keyer's CW Keyer APPs used from :…

Continue

Posted on May 31, 2020 at 2:04pm

Using the LOXJIE A10 60 Watt Class-D Audio Amplifier as an 88Khz LF Band QRQ CW Transmitter AMP

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 on May 22, 2020 at 1:43pm

Comment Wall (40 comments)

At 3:49pm on February 4, 2008, Rick said…
Good site idea and I hope it takes off, I will do my part to generate interest in it........
At 2:44pm on October 5, 2008, Fritz Zwingli said…
Hi Chuck,
many tnx for the kind words.
Congrats on your fb site and hope
to meet you on the air soon.
Vy73 es gd qrq`ing
Fritz
At 8:16pm on December 15, 2008, Bill Kramer said…
Hi Chuck. Thanks for the warm welcome. I don't know exactly when i'll be up and running from here. I have a few problems to workout first. I'm in a condo on the top floor(3rd) with 220 other units here. I face a courtyard and my balcony can bee seen my many others. This condo has antenna restrictions etc. so i'll have to run in the stealth mode. We will see what happens..Maybe a indoor 40 mtr loop?? Hope to catch you on the air.73's
At 6:10am on May 12, 2009, Patrick Henigin said…
Chuck I am trying to promote CW right here in my own home.
I have ordered parts for an interface as described on page
http://docs.google.com/Doc?id=ddw2g8w8_9fkz7xj
I think you wrote that page. It looks pretty basic. I am not sure where the positive voltage is applied, or what voltage it is run at. Or is the sound card supposed to supply enough power to run the circuit?
73 Pat N6ZEM
At 8:36am on September 9, 2009, mwm said…
HI Chuck

Tnx for the welcome as well as the back ground info on the CW IRLP project. I hope to meet up with you guys on that mode down the road.

73..........Mark/W8VNZ
At 1:00pm on November 23, 2009, David Runk said…
Thnks Chuck, got a ways to go on typing but 30-40wpm is FB!...now to get really serious!!! -73, Dave,aa3ej
At 11:56pm on January 1, 2010, KIT DEAN said…
Hi Chuck,

Yes I am presently training to improve my QRQcw copy. I use JustLearnMorseCode and MRX, as well as converting text lists of the 6800 most common words by means of ebook2cw. ( I can copy 24-27 wpm (using 41-44 wpm letters) using a computer keyboard. I spent the last two days trying to get CWirc and CWCOM to work on Windows and was just about to sign on with QSOnet when I found your site, which may be more what I am looking for. I would like to be able to head copy 36 WPM without error, and would dearly love QRQ at 50-70 wpm.) I was licensed in 1960 as a Novice and then in 1976 as an Advanced, and 1984 as an Extra passing the 20 wpm code test. I let my license lapse as I went back to school and was recently relicensed in January of 2009. I had a Yaseu FT101 and this year acquired two HW16's in anticipation of working more CW,

I downloaded the newest fldgi, Mumble and Wondershare. Thank you for putting the instructions for installation in a couple of places and formats, as this allowed me to setup and configure these software apps. Can you tell me which IRC channels are hosting qrqcw conversations, and if this setup is also used by others to work code on the chat channels.

73,
Kit
AC0NR (formerly AA6AS)
At 8:49am on January 2, 2010, KIT DEAN said…
Hi Chuck,
I have not been able to make CWirc work in Windows: it needs to have cwirc.so to be compiled in python or delphi so that the xchat that has been ported to windows can pick it up inside of xchat as a recognizable plugin.

I obtained the 6815 most common words from a website. This is a 'magic number' of words, since it is approximately 95% of all words used. (As you are already well aware) word usage varies depending on whether we are talking about all television scripts, or all novels, or all English usage per the big big Oxford dictionary. But this list should be nearly everything.

I have stayed away from chat rooms since 1994 when it became clear that these were largely unregulated or that there could be harm done to my computer. Because of that, it is somewhat difficult to be aware of the logon procedures etc. So I would really appreciate a really elementary list of how to log on and where to go etc. It seems we could open a IRC channel as #qrqcw_mumble and begin qso'ing. Also, I am lost as to where the main iCW website would be as I only found 11 messages on googlegroups. So I need some pointers.

I got out rufzxp again last night. I am at 46 wpm letters and I think I should just practice for about 2 hours per day. It seems that if I go with faster than 46 wpm letters I miss too much, so it may be my brain is breaking down the communication into dots and dashes. Any advice would be appreciated.



73,
Kit
AC0NR
At 2:17pm on January 22, 2010, PP5VX (Bone) said…
Tnx my dear !

I was hamming for the past 35 years, and started at 14 on ham-radio, and 15 on CW...
As you can read (and see...) better on QRZ.

Nice to take part of this wonderful world of CW and QRQ, of course, because, my moto is: "If you have to do something - do well" - Why CW at 15 wpm ? (hi)

See also the "MorseRunner Scores" page at www.dxatlas.com, with my other call: PV5X, in some contests...

73/DX Bone (PP5VX)
Allways QRP... hi
At 9:23pm on January 24, 2010, Bob said…
Many thanks for the welcome in the QRQcw, I'm very honoured.
Still need to learn a bit how-to here.
I hope to meet with all of you on the radiowaves,
73
Bob, I0QM

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