[Elecraft] CW Secrets of the Masters

[Robert G. Strickland]

There's also the simple fact that a given frequency separation at a lower 
side tone frequency represents a greater percent difference. That is, the 
difference between a desired 200cps tone and an interfering 250cps tone is 
25%. The difference between a desired 450cps tone and a 500cps tone is 11%. 
That's over a 50% difference in what the operator is asking the brain to 
discriminate, and that's a significant difference.

...robert

At 03/13/2008 14:27, John King wrote:
>400 Hz is my upper limit as well.
>Lower than 300 Hz is certainly desirable to me.
>
>I have forty plus years on CW, and no significant
>hearing loss. I do the between-the-headphones DSP
>far more effectively at 400 Hz and below.
>
>73,
>   john  WA1ABI
>
>
> > -----Original Message-----
> > From: elecraft-bounces at mailman.qth.net
> > [mailto:elecraft-bounces at mailman.qth.net]On Behalf Of David Cutter
> > Sent: Thursday, March 13, 2008 2:17 PM
> > To: Bill W4ZV; elecraft at mailman.qth.net
> > Subject: Re: [Elecraft] CW Secrets of the Masters
> >
> >
> > This makes perfect sense.  The ears have a logarithmic response to sound
> > pressure and to frequency.
> >
> > David
> > G3UNA
> >
> > >>
> > >>
> > >> Another one that Fred K3ZO (many time winner of Dayton CW pileup
> > >> contests)
> > >> recently mentioned is using extremely low pitch for weak signals.  Fred
> > >> said many commercial ops he knew used somewhere in the 2-300
> > Hz range so
> > >> he thought his favored 400 Hz was rather high!
> > >>
> > > 73,  Bill  W4ZV
> > >
> > _______________________________________________
> > Elecraft mailing list
> > Post to: Elecraft at mailman.qth.net
> > 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.htm
> > Elecraft web page: http://www.elecraft.com
> >
>
>_______________________________________________
>Elecraft mailing list
>Post to: Elecraft at mailman.qth.net
>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.htm
>Elecraft web page: http://www.elecraft.com

Robert G. Strickland PhD ABPH - KE2WY
rcrgs at verizon.net.usa
Syracuse, New York  USA