Chuck aa0hw

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Latest Activity

Chuck aa0hw posted blog posts
18 hours ago
Chuck aa0hw commented on Chuck aa0hw's blog post Gstreamer "audio OVER ip" for HAM RADIO - audiointerleave/deinterleave plugin examples for QRQ CW Remote Rig Operations
"here is a LIVE real time video example of remote QRQ CW KEYING of an ELECRAFT K3S using the gstreamer interleave/deinterlave methods from the remote OPs linux laptop's AD5DZ CW KEYBOARD this is a follow up test of concept video from the first…"
Thursday
Chuck aa0hw posted a blog post

Gstreamer "audio OVER ip" for HAM RADIO - audiointerleave/deinterleave plugin examples for QRQ CW Remote Rig Operations

this video demoS using GSTREAMER's audiointerleave and deinterleave plugins for a Gstreamer OPUS CODEC AUDIO OVER IP remote rig audio operations use...CONCEPT:break the 2 channel audio over ip pipelines into 2 individual pathways that can contain their own individual Gstreamer audio DSP plugins...in this case....2 different Gstreamer CW AUDIO BANDPASS Filters...one BPF for a PTT tone at 5555 hz that is used to trigger the RIG's VOICE VOX PTT circuit...the other BPF is for the actual CW TONE at…See More
Thursday
Chuck aa0hw posted a blog post

QRQ'n with the K1EL K40 CW Keyer(60 - 120 wpm) using a CW Keyer audio to EMF COIL PC interface

this is a follow up video to this one: https://youtu.be/JPecQqQk85Qthe K1EL K40 CW KEYER's SPEAKER AUDIO OUTPUT is hooked directly to the Ferrite Bobbin Core Inductor Coil input...an EMF PICKUP COIL is right on top of the COIL(cheap telephone recording emf pickup coil)...connect the EMF PICKUP coil to one channel of the PC's MIC INPUT or LINE INPUT...use a simple Gstreamer coded CW AUDIO BANDPASS FILTER to get rid of the CW Keyer Speaker's raspy…See More
Jan 20
Chuck aa0hw posted a blog post

Remote Rig QRQ CW setup using Gstreamer, Laptop & Raspberry PI::RIG interface - LIVE CW QSO demo

brief demo of operating QRQ CW remote rig operations using an ELECRAFT K3S, a Raspberry PI 2b, a remote LINUX LUBUNTU 18.04 LAPTOP, and using Gstreamer PIPELINES for several functions: 1. audio over ip to and from the PI::RIG interface - full duplex 2. cw audio bandpass filter for transmit 3. PTT activation tone bandpass filter for transmit 4. 5 BAND EQ cw audio bandpass filter for receive 5. AUTOMATIC GAIN CONTROL and LIMITER for receive 6. RECEIVE NOTCH FILTER to take out the 5555 hz tone…See More
Jan 19
Chuck aa0hw commented on Chuck aa0hw's blog post Key perfect QRQ CW on your ELECRAFT K3S from 100 to 200 wpm with the AD5DZ remote CW Keying system
"Here is a follow up video sending a TEXT FILE at 111 using the AD5DZ REMOTE CW KEYING system on the K3S brief demo of sending QRQ CW at 111 wpm from a text file to see how well the ELECRAFT K3S keys when using the AD5DZ REMOTE CW KEYING…"
Jan 17
Chuck aa0hw posted blog posts
Jan 17
Chuck aa0hw posted a blog post

The difference a simple QRQ CW transmit Bandpass filter can make on your RIG's TRANSMIT CW output QUALITY

the CW NOTE on the left is using a Raised cosine edge at 6ms rise/fall time with NO bandpass filtering...the harmonics are plentiful as shown on the spec an below itthe CW NOTE On the Right is using the same Raised cosine edge at 6ms - but in addition - is passing through a simple Gstreamer CLI bandpass filter...the BPF virtually eliminates all harmonics above and below the CW PITCH…See More
Jan 15

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 audio OVER ip test - 24 bit VS 32 bit - uncompressed audio over Ethernet

brief test of 24 bit VS 32 bit uncompressed audio going from a laptop to a Raspberry pi 2b loopback - and then right back to the laptop over Ethernet cables going through router and switches

32 bit has virtual no variance from the original audio source

24 bit does show a wide berth of harmonics generated at the lowest db…

Continue

Posted on January 26, 2020 at 7:39am

Elecraft K3 dead spots in the FULL QSK RECEIVE AUDIO when operating QRQ CW mode

NOTICE the DEAD ZONE in the following SCOPE view of sending a couple of 55 ms DITs... while trying to listen for how much QSK RECEIVE AUDIO is between those dits....NOTE:  you will see a GAP of "NO AUDIO" from phase cancellation due to the technique that the K3 firmware uses to try and get "more" QSK audio for the QRQ OP's 

the steady…

Continue

Posted on January 25, 2020 at 3:56pm

Gstreamer "audio OVER ip" for HAM RADIO - audiointerleave/deinterleave plugin examples for QRQ CW Remote Rig Operations

this video demoS using GSTREAMER's audiointerleave and deinterleave plugins for a Gstreamer OPUS CODEC AUDIO OVER IP remote rig audio operations use...

CONCEPT:

break the 2 channel audio over ip pipelines into 2 individual pathways that can contain their own individual Gstreamer audio DSP plugins...

in this case....2 different…

Continue

Posted on January 23, 2020 at 11:15am — 1 Comment

QRQ'n with the K1EL K40 CW Keyer(60 - 120 wpm) using a CW Keyer audio to EMF COIL PC interface

this is a follow up video to this one:

https://youtu.be/JPecQqQk85Q

the K1EL K40 CW KEYER's SPEAKER AUDIO OUTPUT is hooked directly to the Ferrite Bobbin Core Inductor Coil input...an EMF PICKUP COIL is right on top of the COIL(cheap telephone recording emf pickup coil)...connect the EMF…

Continue

Posted on January 20, 2020 at 3:00pm

Remote Rig QRQ CW setup using Gstreamer, Laptop & Raspberry PI::RIG interface - LIVE CW QSO demo

brief demo of operating QRQ CW remote rig operations using an ELECRAFT K3S, a Raspberry PI 2b, a remote LINUX LUBUNTU 18.04 LAPTOP, and using Gstreamer PIPELINES for several functions:

1. audio over ip to and from the PI::RIG interface - full duplex

2. cw audio bandpass filter for transmit

3. PTT activation tone bandpass filter for…

Continue

Posted on January 19, 2020 at 9:45am

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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