Key perfect QRQ CW on your ELECRAFT K3S from 100 to 200 wpm with the AD5DZ remote CW Keying system

brief demo showing the AD5DZ remote keying system keying an ELECRAFT K3S from 100 to 200 wpm, with perfect CW NOTE construction (AFCW MODE)

first testing with a 1 DIT SEND test ...to see if the K3S can key it perfectly without missing any part of the CW ELEMENT

2nd - sending a text file at 150 wpm to see how it keys

RF SCOPE and AUDIO SCOPE used to view RF and AUDIO wave forms..(the CW audio you hear is from the K3S transmit input audio monitor)

AD5DZ RECRI KEYER CW KEYING appS
https://github.com/recri/keyer
https://youtu.be/l8wKVnA4oGc

THE "secret" of this Extreme QRQ CW keying is using AFCW mode and the RECRI AD5DZ PTT app which sends a delayed by 18 to 20 ms CW NOTE behind a first tone at 5555 hz that activates the RIG's VOX PTT circuit to turn on FULLY before the QRQ CW NOTE arrives...

Here is a playlist that has been started using this method
http://www.youtube.com/playlist?list=PLfFan4sDonOdyC6rrtUKvjMayaX2-...

Views: 10

Comment by Chuck aa0hw on January 17, 2020 at 11:33am

Here is a follow up video sending a TEXT FILE at 111 wpm,  using the AD5DZ REMOTE CW KEYING system to key the Elecraft 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 system

this video at 111 wpm, is a follow up to the previous video https://youtu.be/u5nBB9OcQj0

RF SCOPE and AUDIO SCOPE used to view RF and AUDIO wave forms..(the CW audio you hear is from the K3S transmit input audio monitor)

AD5DZ RECRI KEYER CW KEYING appS
https://github.com/recri/keyer
https://youtu.be/l8wKVnA4oGc

THE "secret" of this Extreme QRQ CW keying is using AFCW mode and the RECRI AD5DZ PTT app which sends a delayed by 18 to 20 ms CW NOTE behind a first tone at 5555 hz that activates the RIG's VOX PTT circuit to turn on FULLY before the QRQ CW NOTE arrives...

ALSO: worthy of noting....that a well designed CW AUDIO BANDPASS Filter is used to shape the keying beyond what can be accomplished using RISE/FALL time...the CW NOTE EDGE NOISE above 100 wpm is significant and COPY by ear benefits greatly by adding an additional CW AUDIO BANDPASS filter (Gstreamer BPF used in this example)
gst-launch-1.0 jackaudiosrc ! queue ! "audio/x-raw,channels=1,rate=48000,format=F32LE" ! audioconvert ! audiowsincband mode=band-pass lower-frequency=752 upper-frequency=952 length=700 window=hamming ! audioconvert ! audioamplify amplification=1 ! audiorate ! queue ! jackaudiosink buffer-time=25000

Here is a playlist that has been started using this method
https://www.youtube.com/playlist?list=PLfFan4sDonOdyC6rrtUKvjMayaX2...

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