AUDIO RECORDINGS OF QRQ CW NETs

Comment by Chuck aa0hw on October 22, 2017 at 9:16pm

Here is a LIVE 'off the air' recording, of a QRQ CW NET on 40 meters(10-22-2017)

Comment by Chuck aa0hw on October 30, 2017 at 8:50am

Here is a LIVE 'off the air' recording, of a QRQ CW NET on 80 meters(10-29-2017)

audio recording of an HF 80 METER CW NET that took place on October 29, 2017... (audio was recorded from the LINE OUTPUT of an Elecraft K3S connected to the LINE INPUT of a USB SOUND CARD on a Linux computer)

QSB was up and down quite a bit, and the HF background static was high, - the K3S 250 hertz cw filter was in use...

Comment by Chuck aa0hw on November 25, 2017 at 3:50pm

Here is a LIVE 'off the air' recording, of a QRQ CW NET on 40 meters(11-24-2017)

audio recording of an HF 40 METER CW NET that took place on November 24, 2017... (audio was recorded from the LINE OUTPUT of an Elecraft K3S connected to the LINE INPUT of a USB SOUND CARD on a Linux computer)

Comment by Chuck aa0hw on January 2, 2018 at 9:00am

Here is a LIVE 'off the air' recording of a QRQ CW NET on 80 meters (12-30-2017)

audio recording of an HF 80 METER CW NET that took place on December 30, 2017... (audio was recorded from the LINE OUTPUT of an Elecraft K3S connected to the LINE INPUT of a USB SOUND CARD on a Linux computer)

Comment by Chuck aa0hw on January 29, 2018 at 8:58am

Here is a LIVE 'off the air' recording of a QRQ CW NET on 80 meters (1-28-2018)

audio recording of an HF 80 METER CW NET that took place on January 28, 2018... (audio was recorded from the LINE OUTPUT of an Elecraft K3S connected to the LINE INPUT of a USB SOUND CARD on a Linux computer)

Comment by Chuck aa0hw on February 5, 2018 at 8:53am

Here is a LIVE 'off the air' recording of a QRQ CW NET on 80 meters (2-04-2018)

audio recording of an HF 80 METER CW NET that took place on February 04, 2018... (audio was recorded from the LINE OUTPUT of an Elecraft K3S connected to the LINE INPUT of a USB SOUND CARD on a Linux computer)

Comment by Chuck aa0hw on April 15, 2018 at 5:14am

Here is a LIVE 'off the air' recording of a QRQ CW NET on 40 meters (4-14-2018)

audio recording of an HF 40 METER CW NET that took place on April 14, 2018... (audio was recorded from the USB LINE OUTPUT of an Elecraft K3S's own sound card, and connecting to the LINE INPUT of another USB SOUND CARD via "audio OVER ip" on the local wired area network, to a remote Linux computer)

NOTE: the HF Receive audio was transferred over an "audio OVER ip" APP called Zita-njBRIDGE to a REMOTE RIG AUDIO Linux laptop receiver, where this recording took place(Lubuntu 16.04 64 bit)
A raspberry PI was used as the "audio OVER ip" transmitter, by connecting a USB CABLE from the PI to the ELECRAFT K3S USB PORT

ZITA-NJBRIDGE "audio OVER ip" APP:
https://kokkinizita.linuxaudio.org/linuxaudio/
http://qrqcwnet.ning.com/profiles/blogs/remote-rig-audio-over-ip-us...
http://manpages.ubuntu.com/manpages/artful/man1/zita-njbridge.1.html

Comment by Chuck aa0hw on April 29, 2018 at 6:22am

Here is a LIVE 'off the air' recording of a QRQ CW NET on 40 meters (4-28-2018)

audio recording of an HF 40 METER CW NET that took place on April 28, 2018... (audio was recorded from the USB LINE OUTPUT of an Elecraft K3S's own sound card, and connecting to the LINE INPUT of another USB SOUND CARD via "audio OVER ip" on the local wired area network, to a remote Linux computer)

NOTE: the HF Receive audio was transferred over an "audio OVER ip" APP called Zita-njBRIDGE to a REMOTE RIG AUDIO Linux laptop receiver, where this recording took place(Lubuntu 16.04 64 bit)
A raspberry PI was used as the "audio OVER ip" transmitter, by connecting a USB CABLE from the PI to the ELECRAFT K3S USB PORT

ZITA-NJBRIDGE "audio OVER ip" APP:
https://kokkinizita.linuxaudio.org/linuxaudio/
http://qrqcwnet.ning.com/profiles/blogs/remote-rig-audio-over-ip-us...
http://manpages.ubuntu.com/manpages/artful/man1/zita-njbridge.1.html

Comment by Chuck aa0hw on September 9, 2018 at 9:04pm

Here is a LIVE 'off the air' recording of a QRQ CW NET on 40 meters (9-9-2018)

audio recording of an HF 40 METER CW NET that took place on September 9, 2018... (audio was recorded from the USB LINE OUTPUT of an Elecraft K3S's own sound card, and connecting to the LINE INPUT of another USB SOUND CARD via "audio OVER ip" on the local wired area network, to a remote Linux computer)

NOTE: the HF Receive audio was transferred over an "audio OVER ip" APP called Zita-njBRIDGE to a REMOTE RIG AUDIO Linux laptop receiver, where this recording took place(Lubuntu 16.04 64 bit)
A raspberry PI was used as the "audio OVER ip" transmitter, by connecting a USB CABLE from the PI to the ELECRAFT K3S USB PORT

ZITA-NJBRIDGE "audio OVER ip" APP:
https://kokkinizita.linuxaudio.org/linuxaudio/
http://qrqcwnet.ning.com/profiles/blogs/remote-rig-audio-over-ip-us...
http://manpages.ubuntu.com/manpages/artful/man1/zita-njbridge.1.html

Comment by Chuck aa0hw on November 4, 2018 at 7:39pm

Here is a LIVE 'off the air' recording of a QRQ CW NET on 40 meters (11-04-2018)

audio recording of an HF 40 METER CW NET that took place on November 4th, 2018... (audio was recorded from the USB LINE OUTPUT of an Elecraft K3S's own sound card, and connecting to the LINE INPUT of another USB SOUND CARD via "audio OVER ip" on the local wired area network, to a remote Linux computer)

NOTE: the HF Receive audio was transferred over an "audio OVER ip" APP called Zita-njBRIDGE to a REMOTE RIG AUDIO Linux laptop receiver, where this recording took place(Lubuntu 18.04 64 bit)
A raspberry PI was used as the "audio OVER ip" transmitter, by connecting a USB CABLE from the PI to the ELECRAFT K3S USB PORT

ZITA-NJBRIDGE "audio OVER ip" APP:
https://kokkinizita.linuxaudio.org/linuxaudio/
http://qrqcwnet.ning.com/profiles/blogs/remote-rig-audio-over-ip-us...
http://manpages.ubuntu.com/manpages/artful/man1/zita-njbridge.1.html

Comment by Chuck aa0hw on December 5, 2018 at 8:22am

Here is a LIVE recording of an ONLINE F.O.G. QRQ CW NET on the iCW SERVER (12-04-2018)

live recording of a F.O.G.(fast operators group) QRQ CW NET that took place online, on December 4th, 2018, on the iCW Main Server
https://sites.google.com/site/icwoip/

Joe & Rick were using vintage CW KEYBOARDs to key cw audio into their MUMBLE CLIENT input sound card device...
THE K4KN CW KEYBOARD
http://qrqcwnet.ning.com/forum/topics/cw-keyboards-from-the-days-of...
Chuck was using a software CW KEYBOARD from AD5DZ to send cw audio into the MUMBLE INPUT sound card device
https://youtu.be/l8wKVnA4oGc

Comment by Chuck aa0hw on January 28, 2019 at 10:55am

Here is a recording of a QRQ CW QSO that took place on 1-28-2019 on 80 Meters between aa0hw & W4DBV

QRQ CW qso on 80 meters, 1-28-2019, between 2 qrq cw ops...

aa0hw's remote rig station was doing the recording using OBS...viewing the desktop and USB webcam screens you see on this video....his REMOTE RIG OPERATIONS - is using an ELECRAFT K3S with LINUX SOFTWARE apps performing all necessary functions for the REMOTE RIG TX and REMOTE RIG RX over ip on the LOCAL AREA WIRED ETHERNET NETWORK...A raspberry PI 2b is connected to the K3S's USB PORT allowing use of the K3S USB SOUND CARD(Raspberry PI2b) and the K3S USB SERIAL DATA PORT(FLrig) Audio over IP via ZITAnjBRIDGE from the Raspberry pi 2b::k3s interface to the remote laptop located in the OP's living room. FLrig's GUI and CONTROL was over SSH using (ssh -X) to minimize the CPU use on the FLRIg::PI - instead of having to use REALvnc to control the PI's FLRig APP...which puts strain on the old PI 2b's CPUs

W4DBV is using the conventional method of sending QRQ CW using a CW KEYBOARD, an MFJ 451, with his Yeasu FT 100d RIG...

Comment by Chuck aa0hw on January 28, 2019 at 11:20am

Here is a LIVE 'off the air' recording of a QRQ CW NET on 80 meters (1-26-2019)

QRQ CW qso on 80 meters recorded LIVE off the air, from an ELECRAFT K3S on 1-26-2019 via REMOTE RIG over IP

using ZITAnjBRIDGE for audio OVER Ip
and GSTREAMER for the USB WEBCAM SHOTS seen on this video of the remote OP's REMOTE RIG OPERATIONS setup...

Comment by Chuck aa0hw on February 23, 2019 at 7:40pm

Here is a LIVE QSO recording from a WEBSDR receiver of a QRQ CW QSO between NN7CW & KF7CX on 80 meters on 2-23-2019

Comment by Chuck aa0hw on October 12, 2019 at 7:40pm

Here is another live OFF THE AIR recording of a QRQ CW NET that took place on 10-12-2019

QRQ CW qso on 40 meters recorded LIVE off the air, from an ELECRAFT K3S on 10-12-2019 via REMOTE RIG audio over IP

- using Gstreamer avenc_aac & avdec_aac for the audio OVER Ip from the internal USB sound card of the Elecraft K3S via a Raspberry pi 2b remote rig interface - to this recording laptop

Comment by Chuck aa0hw on February 2, 2020 at 7:27am

QRQ CW NET that took place on 80 meters on 2-1-2020

QRQ CW qso on 80 meters recorded LIVE off the air, from an ELECRAFT K3S on 2-1-2020 via REMOTE RIG audio over IP
- using a Gstreamer RTSP 32 bit UNcompressed AUDIO SERVER::CLIENT setup, for the "audio OVER Ip" from the internal USB sound card of the Elecraft K3S via a Raspberry pi 2b remote rig interface - to this recording laptop

Comment by Chuck aa0hw on February 29, 2020 at 8:16pm

Here is a live off the air recording of a QRQ CW NET that took place on 80 meters on 2-29-2020

QRQ CW qso on 80 meters recorded LIVE off the air, from an ELECRAFT K3S on 2-1-2020 via REMOTE RIG - 17.555 Khz VLF TRANSMITTER, VLF RECEIVER SDR on laptop setup

RECEIVE ANTENNA for laptop SDR used a tuned resonant coil with 10 ferrite rods core inside an air wound coil, directly connected at coil ends to the laptop's sound card LINE INPUT on the left channel...QUISK SDR took it from there
https://james.ahlstrom.name/quisk/

Comment by Chuck aa0hw on March 20, 2020 at 8:07pm

Here is a new method for QRQ CW copy practice using a FLAC FILE recording of actual RF LF BAND QRQ CW signals and be able to scan the band and pick and choose which signal to listen to using an SDR APP...this FLAC FILE has 12 QRQ CW signals on it from 61wpm to 83wpm scanning LF BAND RF FREQUENCIES from 61 Khz to 83 Khz.... you can download this FLAC FILE here(about 12 minutes in length):

http://www.mediafire.com/file/2m7pc0nrn0c9z0v/QRQcwPRACTICEusingSDR...

here is a video demo of doing just that:

brief demo of recording 12 different QRQ CW signals at different speeds on the LF BAND directly - from 61 Khz to 83 Khz - using a 192 Khz sample rate sound card and Audacity...export the Audacity recording at 192 Khz sample rate into a FLAC FILE...play the FLAC FILE using VLC and use an SDR with the FLAC FILE as its input and then scan the LF BAND on the SDR for each of the 12 QRQ CW signals and listen to any of the QRQ CW transmissions with the SDR controls

experimental method for QRQ CW copy by ear practice
there are 12 QRQ CW transmissions on the flac file
- from 61 Khz to 83 Khz...each signal can be captured and heard using an SDR program

the output of the FLAC media player would usually go to a virtual audio cable(for windows), soundflower VAC(for MAC) or using JACK for linux and you can directly wire the LF RF output from the FLAC FILE playing by VLC to the input of the SDR

if you would like to try this on your desktop..using your own SDR and media player...you need to adjust your sound card's sample rate to 192 Khz

Comment by Steve Steltzer on August 11, 2020 at 5:51am

Fun to go back and listen to these Q's again. Thanks Chuck.

Comment by Chuck aa0hw on September 1, 2020 at 12:38pm

Grab your SDR APP and pick which QRQ CW SPEED you would like to practice copying CW by ear with:

11 individual signals to choose from, from 25 to 75 wpm, at 5 wpm increments

The Whole book of 1John in Morse code, 11 individual, separate signals to choose from, 25 wpm to 75 wpm at 5 wpm increasing increments... Use an SDR APP like SDRsharp https://airspy.com/download/ and a virtual audio cable like VB-AUDIO's VB CABLE https://www.vb-audio.com/Cable/ to isolate, demodulate and listen to the desired wpm signal on this Bible in Morse Code video, web browser playback PLAYBACK ON WINDOWS: on Windows 10 sound properties, select the VB CABLE as your default playback device then your browser for YouTube will use VB CABLE to play the 11 VLF Frequencies on this video... then on SDR SHARP, select for its audio input the same - VB CABLE... also on SDR SHARP, select your usual sound card for SDR SHARP's audio output

AUDIO RECORDINGS OF QRQ CW NETs

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