[ARC5] What is a "radio range filter"?

[Richard Knoppow]

    This article also mentions the Southern California Edison Company's 
use of 50 Hz power until the late 1940s. While the City of Los Angeles 
got its power from the owned and operated Department of Water and Power 
most of the outlying areas were either SCE or had their own power 
companies. Much of the San Fernando Valley was SCE rather than DWP so it 
had 50Hz power.

On 4/27/2016 7:48 AM, joldenburg2 at new.rr.com wrote:
> It appears that 25hz is still in use in industrial app's in the Niaagra Falls area:
>
> http://electrical-science.blogspot.com/2009/12/history-of-power-frequency.html
>
> Jon AB9H
> ---- Glen Zook via ARC5 <arc5 at mailman.qth.net> wrote:
>
> =============
> Methinks a typo!
>
> Virtually every part of the United States uses 60 Hz power! Glen, K9STH Website: http://k9sth.net
>
>        From: D C _Mac_ Macdonald <k2gkk at hotmail.com>
>   To: Richard Knoppow <1oldlens1 at ix.netcom.com>
> Cc: ARC-5 Mail List <arc5 at mailman.qth.net>
>   Sent: Tuesday, April 26, 2016 3:17 PM
>   Subject: Re: [ARC5] What is a "radio range filter"?
>     
> I never heard of any US area that used 60 Hz power but areas around Niagara Falls used 25 Hz as late as 1950s!  Mac, K2GKK/5
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-- 
Richard Knoppow
1oldlens1 at ix.netcom.com
WB6KBL

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