Frequency accuracy?

[Frank Cahill]

Robert Scott wrote:
> 
> Frank Cahill writes:
> 
> >....Those $200 machines are not in the same
> >category. They are not suitable for piano work. Only accutuners, RCT,
> >and perhaps yamaha's PT100 are suitable.....
> 
> If you are talking about absolute frequency accuracy, remember that
> the Windows RCT is only as accurate as the source used to calibrate it.
> And from what I understand, the RCT is field calibrated against a
> little quartz tone reference/metronome that costs a lot less than
> $200.  That's the device whose accuracy you should be evaluating.
> 
> -Bob Scott
>  Ann Arbor, Michigan


Hi, Bob. I find that very interesting.  If you are correct, there could
be alot of RCTs that are not properly calibrated.  I assumed that the
RCT worked off an internal clock in the computer. 


-- 

Frank Cahill
Associate Member, Piano Technicians Guild
Northern Va