[pianotech] beginner's calibration question

[Zoe Sandell]

I like this idea- I imagine it is very hard to get the fork the same temp
every time

Zoe


-----Original Message-----
From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of Porritt, David
Sent: December 28, 2009 2:14 PM
To: pianotech at ptg.org
Subject: Re: [pianotech] beginner's calibration question

Use the tone from TuneLab rather than the fork.  Forks vary with
temperature, TuneLab will be more consistent.  You can "tune" your fork and
I'm sure someone will give you instructions on how to do that but it will
always have to be at the temperature at which it was calibrated.

dp


David M. Porritt, RPT
dporritt at smu.edu

-----Original Message-----
From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of Zoe Sandell
Sent: Monday, December 28, 2009 2:02 PM
To: pianotech at ptg.org
Subject: [pianotech] beginner's calibration question

Hello,

I have just completed calibrating my tuning device with NIST and the Tunelab
demo-.  When I call back the C5 500Hz marks as in tune- ie squares stay
still- but my tuning fork reads flat at A440

How then do I accurately tune the temperament octave to the tuning fork-
knowing this discrepancy?  Get a new/better tuning fork?

Thanks
Zoe