[GreenKeys] Fwd: Re: Frequency deviations in Continental Europe including impact on electric clocks steered by frequency

[Richard Knoppow]

    Somewhere in the forth edition of "Reference Data for Radio 
Engineers" (available free on the web) is a chart showing power 
standards around the world including frequency. While 50Hz and 
60Hz were the most common there were odd frequencies like 42Hz. I 
have no idea where that came from. Some areas had 25Hz power, 
good for traction motors. The Pennsylvania RR electric trains ran 
on 25Hz. I visited the Canadian side of Niagara Falls when I was 
a kid, the power was all 25Hz and made the lights flicker very 
noticeably. I have no idea why 25Hz other than there must have 
been a lot of industrial machinery on it.

On 3/6/2018 1:38 PM, Bruce Gentry wrote:
> 
> I had plenty adventures with wild frequency in Taiwan in 1970. It 
> could sag as low as 57 cycles in the late afternoon and evening, 
> and go as high as 64 after midnight to keep clocks on time for 
> 6:00 hrs. 
-- 
Richard Knoppow
1oldlens1 at ix.netcom.com
WB6KBL