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[AMPS] 50hz? 25Hz???

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Subject: [AMPS] 50hz? 25Hz???
From: w7iuv@earthlink.net (Larry Molitor)
Date: Mon, 09 Apr 2001 14:46:43 +0000
Downtown Chicago was one such place. Many elevators in the "loop" still ran 
on 25 Hz until sometime in the sixties. I remember seeing, at the power 
station where my father worked, the huge motor-generator that was used to 
convert the locally generated 60 Hz to 25 Hz for distribution to select 
customers. The conversion from 25 Hz to 60 Hz for "consumers" was done 
before I arrived on the scene.

Larry - W7IUV

At 09:27 AM 4/9/01 -0400, Bob Duckworth wrote:

>Have a receiver here and power supply is marked 25Hz. USA made for USA
>market.
>Who knows when and where in USA 25Hz was so common that 'consumer
>electronics'
>was manufactured to operate on it.
>
>-bob
>
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