[GreenKeys] TTY Ribbons

[Doug Alderdice]

Sure did, and I don't know about 20 cycles in NYC but in the Buffalo area 
25 cycle power was commercially available until quite recently, within the 
last 10 years.  The Adam Beck station just across the Niagara River in 
Ontario was the last local station that was generating that.  I am told it 
is more efficient power for (big) 3-phase motors like elevators and what 
was found in the big steel mills here and so on.

There's an old theatre here in nearby North Tonawanda that still have 
25-cycle power, though now internally generated.  I assume their HVAC 
equipment and/or elevators use it, but some of their lighting circuits are 
on the 25-cycle feed and it is definitely noticeable.  Not when you look at 
the lights dead-on, but I can sure see it in my periphery.

73,

Doug, KA2WFT


At 10:15 AM 8/10/2011 -0400, Larry Tighe wrote:
>Did they flicker because of 20 cycles?  If so, why and where did 20 cycles
>current come from?
>
>lar
>----- Original Message -----
>From: <Til128 at aol.com>
>To: <greenkeys at mailman.qth.net>
>Sent: Wednesday, August 10, 2011 10:11 AM
>Subject: Re: [GreenKeys] TTY Ribbons
>
>
> > light bulbs were left hand threads to prevent theft.
> >
> > True!
> >
> > TT