Sverre Holm wrote:
There has been research on the topic of sidetone and level. It concluded
with 500 Hz and in some cases even lower tones to be favorable in noise free
environments.
<snip>
40 and 80 signs/minute should be 8 and 16 wpm. Peter Montnemery is SM7CMY
and a K2 owner, but I am not sure that he is active on this list any longer.
I've heard it said that at 'super' speeds (65 wpm and above) a very high
pitch (like 1000 Hz) is necessary. I suspect that the mechanism used
when copying at these speeds is somewhat different than that used at
lower speeds. My feeling is that the operator recognizes words by the
combinations of buzz frequencies generated from the sharp rise/fall times.
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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