All Blog Posts Tagged 'QRQcw' (144)

brief demo of selecting various raised cosine windows for copying qrq cw using the AD5DZ CPO, being keyed by the AD5DZ CW Keyboard....NOTE: ...might not hear much difference unless using a good set of headphones...the changes are subtle between all the raised cosine windows options....…

Experimental test to see how well a Gstreamer AUDIO OVER IP pipeline can (also)filter CW AUDIO headed for the LINE INPUT of a RIG for CW TRANSMIT using AFCW MODE on HF SSB(remote rig over Ethernet LAN setup using a Raspberry PI2b::RIG interface)

Here is the Gstreamer script that includes the additional script for the CW AUDIO BANDPASS…

brief demo of getting the Windows program YPLOG to work on a MAC MINI Mojave OSX using WineBottler

http://winebottler.kronenberg.org/

NOTE: a Gstreamer "audio over ip" pipeline was constructed, using the OPUS AUDIO CODEC, to send audio from the MAC/YPLog over the home WIRELESS NETWORK, to…

this is a follow up test to the previous video demoN the Gstreamer PIPELINE code for a CW AUDIO BANDPASS filter.

https://youtu.be/F6mwluqjlIM

In this video...not only is the previous pipeline used with its CWa audio bandpass code so you can hear your own YPLog CW KEYBOARD sidetone in near zero…

test to see how accurate the MIDI INPUT keying would be on the TEENSY BOARD, TEENSY pins 4 & 5, being keyed by an external CW KEYER's RIG KEYING OUTPUT jack(K1EL K40 - in this example) using the AD5DZ software CW KEYER Teensy MidiKeyer code

Extreme QRQ CW speed test at 150 wpm from the K1EL K40 CW KEYER - keying together TEENSY PINS 4…

YPLog is known as one of the most versatile and adjustable QRQ CW Keyer programs of all time...and this video demo's it working well on Windows 10 - to send CW to the Mumble Voice Chat input on iCW

https://sites.google.com/site/icwoip/

using the new VOICEMEETER POTATOE(VMP) windows…

This is a follow up to the previous video using a CW KEYER:

https://youtu.be/4xXtQK57ssM

in this video, QRQ CW from an MFJ-451 CW KEYBOARD is utilized as the example

most of the modern PCs & Laptops on Windows 10 - do not have DIRECT audio INPUT MONITORING available...this video demoS…

webRTC usually comes stock with several audio processing engines in place .... like AGC, NOISE FILTERING, ECHO CANCELLATION which all of them will destroy how QRQ CW sounds over webRTC's OPUS AUDIO CODEC audo processing engines...

used in this example is webRTC from JITSI MEET:…

Brief demo of using this TRF RECEIVER circuit(LINKED BELOW) to monitor the RIG's CW TRANSMIT - RF NEAR field - of my RIG's antenna on 80 meters

setup to listen to your rig's CW, using the RIG's antenna's NEAR FIELD RF EM - picked up by a TRF receiver's FERRITE ROD antenna - BFO'd by a simple VFO circuit

TRF Transmitter monitor…

demo of using a 2nd receiver, a simple TRF receiver, to adjust your RIG and your KEYBOARD settings, to make sure you are sending cw just like you want...create your own custom CW NOTE with its own type of raised cosine edge, its own weight, rise/fall time... etc.. by listening in real time to this TRF Receiver

TRF Transmitter monitor…

one of the challenges when using a speaker for "copy by ear" listening to QRQ CW audio tones, is that the pure sine cw audio tones bounce off the walls, floor and ceiling of the room you are in and can cause all kinds of weird effects...this experimental combo of using a surplus, 5 buck, 4 ohm, flat panel speaker and the CW AUDIO CANNON…

Even at 8.3 ms RISE and FALL time, as was used in this test setup,  which is even more than the usual COMMERCIAL RIG's  RAISED COSINE WAVE SHAPE, the amount of CW EDGE NOISE harmonic energy that you will still transmit above and below the actual CW PITCH, when sending at QRQ CW - say at 90 wpm,  is shown here in this Spectrum Analyzer view below:…

brief demo of what QRQ CW morse code audio tones sound like using the FLAC AUDIO CODEC on Gstreamer Pipelines

NOTE: the QRQ CW AUDIO you are hearing, if what the FLAC encoded CW AUDIO sounds like after decoding it finally on the LAPTOP(Lubuntu 18.04)

the QRQ CW AUDIO stream starts on the LAPTOP goes to the PI over wired Ethernet,…

test by sending a QRQ CW test file from TOM's W4BQF famous article:

https://sites.google.com/site/tomw4bqf/copyingcwover70wpm

software CW KEYBOARD by AD5DZ:

https://youtu.be/l8wKVnA4oGc

RASPBERY PI…

     in HONOR of the late GREAT SK -   WILD BILL -   KB9XE   

demo of this - honoring the late great QRQcw OP

"WILD BILL", KB9XE

here are the Gstreamer scripts used for this example:

SEND a jpeg picture to…

This video is a short demo of a first test trying to broadcast 5 FLdigi's sending at 5 different qrq speeds...where you can choose which FLdigi//speed you want to listen to - right from your browser listening to the TWITCH QRQcw CHANNEL.

a test to transmit and receive 5 individual channels of audio to AND from the TWITCH Streaming server -…

iCW now has a new PRO MUMBLE SERVER dedicated for QSO'n QRQcw over the internet

It is located in Denver, Colorado

Please see this iCW website for more information: …

brief test creating 2 Gstreamer AUDIO PIPELINE LOOPBACKS from a Linux Laptop TO a RASPBERRY PI 2b - over the LAN - going through routers and switches...(both using Jack Audio Connection Kit)

one PIPELINE using rtpL16***

and the other PIPELINE using rtpL24***

to compare Gstreamer's rtpL16pay and rtpL24pay RTP AUDIO PAYLOADER…

TOM's article about his work with the DVORAK keyboard for QRQ CW TYPING

  https://www.eham.net/ehamforum/smf/index.php?topic=81139.10;wap2

HERE IS SOMEONE USING a DVORAK KEYBOARD to type 150 wpm…

short test by transmitting CW at 1 watt on 10 meters - going to a websdr rcvr to listen and record the sound - look for how well using AFCW MODE on an ELECRAFT K3S performs for its spectral purity and waveform preservation of a well constructed raised cosine edged CW NOTE made by the ZamGate CW RE-Keyer - transmitted by an Elecraft K3S using a…