A = 421 - 440

[Scodiddly]

Well I wonder how you treat a Hammond organ for this.  They are fixed to run A=440 due to design.  When you go overseas you either have a new motor or a frequency conversion kit installed. Stock the ac motors running the tone wheels  are 60hz u.s. motors. The conversion kit lets the motors run at 50hz for overseas. Or you swap the motors.
Without the kit or motor replacement a Hammond will be out of tune(flat) when in Europe.

There's a product specifically for adjusting tuning on a Hammond, or taking it to Europe. Even lets you step up or down a couple semitones.

 

[pucho812]

There's a product specifically for adjusting tuning on a Hammond, or taking it to Europe. Even lets you step up or down a couple semitones.

yes, that's the frequency conversion kit, I always thought it was fixed for specific 50hZ or 60hZ operation, I didn't know it was variable?