[GreenKeys] Model 15 + C-64 Baud rate question

[Howard Weeks]

Another use for the governor controlled motors was to allow machine RPM 
to be set independent of power frequency.  A synchronous motor is slaved 
to the frequency of the power which has to be accurate if the machine 
speed is to be accurate.  Those old tactical generators used by the 
military couldn't maintain an accurate 60 cycle frequency and could be 
significantly off.

Howard in GA

On 7/4/2015 7:03 PM, Jim Haynes wrote:
> On Sat, 4 Jul 2015, Roy Morgan wrote:
>>>
>> The operating speed of the receiving machine is not being changed.  If
>> you have a governed motor, it seems likely that you can change the
>> actual machine speed, but I have not heard of this. Machines with
>
> It was done during WW-II to adjust U.S. Model 15 machines to inter-
> operate with British 50 baud machines.  There is a special tuning fork
> for the purpose.
>
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