Re: 1956 -- circuit reliability book

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#619780

From: Andy Burns
Date: Tue, 06 Feb 2018 09:55

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Simon Turner wrote:

> I have no experience of US phone bells, but UK ones certainly don't
> sound right if they are rung with the wrong frequency (50 Hz from the
> mains rather than the 25 Hz they are expecting)

I thought they were 17Hz?  Though it's a long time since I heard a phone 
with a bell, apart from as an MP3 ringtone ...

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From: Andy Burns <use...@andyburns.uk>
Newsgroups: alt.folklore.computers
Subject: Re: 1956 -- circuit reliability book
Date: Tue, 6 Feb 2018 09:55:32 +0000
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