[Elecraft] CW listening pitch

[Ted Edwards W3TB]

This is all so very helpful, and I am especially thankful to Sverre for
that wonderful item from his blog.
I am printing that one out and studying it carefully.

One aspect of the listening tone frequency has been zerobeating a station.
The K3 is the first time in my 52 years operating CW when I could actually
do something about it instead of just trying to tune by ear to what I
thought was probably about right.  My ability to get that right was not
very good at 700 Hz.  That CWT is the greatest thing since sliced bread!

As for tone frequency, I was initially trying to copy at 700 Hz and
wondering why I was not doing as well as expected in the ARRL DX CW last
weekend.
I dropped it to 600 Hz and will experiment this week with 550 Hz and 500 Hz.

My thanks to everybody on the Elecraft Reflector.

On Mon, Mar 2, 2015 at 4:19 AM, Vic Rosenthal <k2vco.vic at gmail.com> wrote:

> At 72 I've discovered that my left ear is pretty much worthless above 1
> kHz while my right one works up to about 8 kHz. They both seem to have
> about the same sensitivity "below cutoff." When I was a kid I could hear
> the 15 kHz TV horizontal oscillators clearly (and do a lot of other stuff
> better, too). My best CW pitch seems to be around 520 or 530 Hz.
>
> Vic 4X6GP/K2VCO
>
> > On Mar 2, 2015, at 8:35 AM, Jim Brown <jim at audiosystemsgroup.com> wrote:
> >
> >> On Sun,3/1/2015 10:25 PM, Rick Tavan N6XI wrote:
> >> Yes, I've noticed this. I have no real knowledge of why low tones seem
> to
> >> make for better copy in QRM but I have guessed that it has to do with
> the
> >> relative difference in interfering tone for a given offset from the
> desired
> >> signal. If you listen to 1000 Hz (which many ops do) and the interfering
> >> signal is 100 Hz away, the difference is only 10%. But if you listen to
> 400
> >> Hz, the difference is 25%. So the filter in your brain may be more
> >> effective distinguishing 400 from 500 Hz than it is in distinguishing
> 1000
> >> from 1100 Hz. Just a guess.
> >
> > That's my audio professional's best guess too. In general, we humans
> hear logarithmically. Also, we hear differences in sounds that are
> separated by some "critical bandwidth" that is in the range of 1/3 to 1/6
> of an octave. An octave is a 2:1 frequency ratio. So figure 2 to the 1/3
> power and 2 to the 1/6 power.
> >
> > I set my radios between 500 - 550 Hz. Those with severe high frequency
> hearing loss might want to try even lower frequency settings. Most (but
> definitely not all) hearing loss is greatest at the higher frequencies.
> >
> > 73, Jim K9YC
> >
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-- 
73 de Ted Edwards, W3TB and GØPWW

and thinking about operating CW:
"Do today what others won't,
so you can do tomorrow what others can't."