[GreenKeys] 35-KSR - 50Hz gears

[Jim Haynes]

On Sat, 6 Dec 2014, epvgk at limpoc.com wrote:

> There's always the 130 pound block of iron that is the old style M19
> power supply unit. hehehe.
>
Which doesn't do anything for a Model 35.  And most of those M19 power
supplies use constant voltage transformers which are quite frequency
sensitive.  In the military, where frequency accuracy cannot be assured,
the M19 used thyratron rectifiers or magnetic amplifier regulation.