Hi Lou

My way of finding my preferred listening pitch is to sweep the pitch tone,
and stop it at the preferred frequency.  I honestly couldn't tell you what
it is though!  Probably around 550 Hertz.

A440 is the standard concert pitch which was adopted in the USA in 1926.  it
then became an international standard in the post war years.
The 432 is sometimes used as an alternative in some countries and concerts.

Often the medieval music enthusiasts use A flat as a standard - I think this
is about 425 Hertz.

73

David W Wood 

-----Original Message-----
From: For blind ham radio operators [mailto:[log in to unmask]]
On Behalf Of Lou Kolb
Sent: Monday, March 10, 2014 12:15 PM
To: [log in to unmask]
Subject: Re: How To Zero Beat when in CW ModeWith TS590

Bob and list,

This brings up an interesting point. In the November 2013 QST, N2HX proposed

that some hams might find CW more pleasant to copy if they set their receive

note at 432 hz. Apparently, some folks believe there is a significant 
difference in listening comfort between 440 hz, which is middle A, and 432 
which seems to be a preferred standard for middle A. i'm not a musician so 
this is all new to me. However, I did tune my sidetone to as close to 432 as

I could get it. I wasn't that far off to begin with. I can't say that it 
made any great difference but I'd be interested to hear anyone else's 
thoughts on the subject. 73, Lou  WA3MIX
Lou Kolb
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