If that is the case, tune to a machine sent CW signal under good
conditions (low QRN and no QRM) - the decode will be good.
Even if there are errors in the decoded CW, that should be an indication
that decoded CW is not perfect, and thus an encouragement to learn CW in
order to "fill in the blanks".
Your demo might rather be a decode of perfectly sent CW from a local
transmitter operating into a dummy load rather than an "on the air"
transmission with all the attendant QRN and QRM that is present with
such signals.
No CW decoder is perfect, but the K3 decoder is one of the better ones.
I am not a great CW operator, but I can 'hold my own' at 20 WPM, and
sometimes at 25. It does take practice, but I would advise anyone
contemplating CW operation to learn CW rather than depending on a
decoder. There are many operators out there who do not use machine sent
code, and there are even some that use a bug or straight key with an
'accent' - CW decoders will have a hard time with that CW, but the human
brain can figure it out.
While copying W1AW to see what would happen, I noted that the Farnsworth
spacing used at lower speeds did not decode as words - there was a space
between each letter - and yes, that is what the Farnsworth method does,
it sends each character at a higher rate than the set speed, but there
is a delay between characters, which the decoder properly interprets as
a space.
73,
Don W3FPR
On 6/19/2013 7:55 PM, Sam Morgan wrote:
not very helpful to have garbage code displayed on the screen
when trying to demonstrate the ' CWT feature' of the K3
to someone new to the hobby and not yet proficient in cw :-(
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