Re: Sidetone questions -- copy speed vs sidetone pitch
Posted by
Vic K2VCO on
Jan 16, 2006; 5:43pm
URL: http://elecraft.85.s1.nabble.com/Sidetone-questions-copy-speed-vs-sidetone-pitch-tp385721p385723.html
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_______________________________________________
Elecraft mailing list
Post to:
[hidden email]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft
Help:
http://mailman.qth.net/subscribers.htmElecraft web page:
http://www.elecraft.com