SOT

[Carl Teplitski]

Read your message today,re. SOT calibration.
You state two adjustments. Have seen adjusting
screws, but don,t know details. Would you be so kind
as to itemize steps. Would really appreciate it.
Please send to my Email address personally.
Thank you in advance.

Carl

Dick Beaton wrote:

> 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)
> >
> >