Chuck Hutton wrote:
"The spectrum of a OOK (CW) signal at 3 wpm is different from the
spectrum at 30 wpm, so what does the last phrase in your response mean?
The signals will have energy content at (carrier rate +/- symbol rate),
so the 30 wpm signal would qualify as "more bandwidth" in my book."
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The ARRL gives a "rule of thumb" in one of their handbooks that goes
something like this:
"The bandwidth of clean CW signal in Hertz is approximately twice the WPM
rate."
Going by that, the 3 WPM signal has a bandwidth of about 6 Hz and the 30
WPM signal has a bandwidth of about 60 Hz. This is quite insigniicant
when compared to the CW bandwidth of many of today's mdern rigs.
73, de Earl, K6SE
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