[Elecraft] CW listening pitch

David Cole dave at nk7z.net
Sat Feb 28 19:05:29 EST 2015


Hi,
I misstated: Should have been the best was several hundred HZ away from
what I thought was optimum...  

I did a number of tests to see what I "liked", vs what was best based on
my ear pass-band, (based on the hearing test), my best guess was 680, my
best based on ear pass-band was closer to 490.  The 490 is far batter
than my best guess was.  

I had actually placed the CW side tone in a narrow -15 db null, almost
exactly.  I asked the audiologist about that, and she indicated it might
be related to me never actually hearing anything much at 680 Hz, and the
perception that when I set CW to the null it seemed in the clear for me.

I have verified that I copy better at 490, vs 680 Hz, by setting zero
and listening to similar stations at high speed and looking at my copy.


-- 
Thanks and 73's,
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On Sat, 2015-02-28 at 14:01 -0800, Phil Wheeler wrote:
> Re "I had a hearing test, and the best frequency 
> was several hundred HZ away from my optimum...". 
> Best is not the same as optimum? That puzzles me.
> 
> Phil W7OX
> 
> On 2/28/15 1:42 PM, David Cole wrote:
> > Hi,
> > If you have an older hearing test, use the most recent one, and see what
> > part of the audio spectrum you hear best at, within the allowed spectrum
> > of the K3.  Then select that frequency.  I had a hearing test, and the
> > best frequency was several hundred HZ away from my optimum, and many db
> > away as well.  After changing it, I copy CW much better.
> 
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