[Elecraft] K1 carrier rise/fall times unequal?

[k6se@juno.com]

Don, W3FPR wrote:

"As far as bandwidth of the signal goes - the waveshape alone does not
tell the whole story because the keying speed is also a primary factor -
a 10 wpm CW signal is more narrow than a 30 wpm CW signal and so on."
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Keying speed would be a primary factor only if the CW signal is
click-free.  The ARRL defines the bandwidth of a clean CW signal as
approximately BW (in Hz) = WPM times 2.  I.e., a 10 wpm signal has a BW
~20 Hz and a 30 wpm signal has a BW ~60 Hz.
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Vic, K2VCO wrote:

"I suggest using a second receiver with a sharp IF filter.  Adjust it so
the signal from your K1 is S9 and carefully tune across the signal.  If
you hear clicks for more than about 500 Hz above or below the signal
itself, then perhaps it is too wide."
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I agree with Vic.  If you hear clicks outside of the passband of the
receiver's narrow filter, then the offending transmitter needs
improvement.  Many modern rigs have clicks as much as +/- 2.5 kHz from
the transmitted frequency.  The clicks are not necessarily caused by
overshoot of the keying waveform but rather because of the risetime
and/or falltime being too short.

73, de Earl, K6SE