SOT

[Dick Beaton]

You can get a=440 on your short wave radio WWV.  You will find it on 5000,
10,000, and 15000 mc.  They give you a minute of it.....I think 18 min.
after each hour, but now sure of that. Been awhile.  BTW the SOT is off a
bit, but not enough to make a whole lot of difference.  There are two
adjustments when re-calibrating. One is a small variable capacitor....the
other is a tuning slug on a coil (inductor). You need to go back and forth
until you get it so the spacing between notes is correct. Have fun.
Dick RPT (N7RB)

----- Original Message -----
From: Kristinn Leifsson <istuner@islandia.is>
To: <pianotech@ptg.org>
Sent: Sunday, October 29, 2000 4:56 AM
Subject: Re: SOT


> It used to be A 440 over here, but they found out people were using it,
> changed the tone but also made a phone number that you can call and get A
> 440 for approx. 50 cents a minute (no pun intended).
>
> And the U.S. is a capitalist country!
>
>
> Kristinn
>
>
>
> At 23:04 28.10.2000 -0400, you wrote:
> > >Pick up your phone and let the SOT listen to the dial tone.  In my
area,
> > and
> > >presumably elsewhere, the dial tone is a square wave audio 440 cps
tone.
> > The
> > >lights should stop dead on.
> > >
> > >Bill Simon
> > >Phoenix
> >
> >Can anyone confirm what Bill says here. I've always known the (upper)
dial
> >tone to be real close to A440 but figured it was about eight cents sharp!
> >
> >Bill, if you're right, I've got an Accu-fork for sale, batteries
included.
> >
> >John Lillico, RPT,
> >Oakville, Ontario
> >(on the Bell Canada system)
>
>