[CW] Good Sounding Sidetone or Code Practice Oscillator Kit

pa0wv pa0wv at amsat.org
Mon Aug 12 12:55:59 EDT 2013


On 12/08/2013 18:00, cw-request at mailman.qth.net wrote:
> Good Sounding Sidetone or Code Practice Oscillator Kit

As far as I know, but I can be wrong of course, you obtain minimal click 
(bandwidth) with a cosine squared slope, not with a logarithmic slope he 
uses.

'Cosine squared' means that the slope (envelope of RF) is a sinewave 
from the minimum to the maximum, so in both extrema running horizontal 
(derivative zero)

73
PA0WV


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