Subj : Re: Cloning a 2.5" IDE/PATA Laptop Hard drive
To   : All
From : G6JPG-255@255soft.uk
Date : Thu Jan 31 2019 19:16:21

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From: "J. P. Gilliver (John)" <G6JPG-255@255soft.uk>
Newsgroups: microsoft.public.windowsxp.general
Subject: Re: Cloning a 2.5" IDE/PATA Laptop Hard drive
Date: Tue, 14 Nov 2017 15:46:21 +0000
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In message <Rs6dnXLb2-AMBJfHnZ2dnUU7-I-dnZ2d@earthlink.com>, Ant 
<ANTant@zimage.com> writes:
>"J. P. Gilliver (John)" <G6JPG-255@255soft.uk> wrote:
>> In message <oud7pg$da8$1@dont-email.me>, Paul <nospam@needed.invalid>
>> writes:
>> []
>> >But you know why that is, right ?
>> >
>> >Your download max was 33.6, not 56K.
>> >
>> >A 56K modem has a fallback to 33.6K protocol, if the modem pool at the
>> >other end indicates it doesn't support 56K.
>
>> It was only ever 56k for download, basically because the mainframe
>> computer via the telephone system effectively had direct control of the
>> D-A converter in the exchange and could thus generate the waveform,
>> whereas in the upload direction, your computer (MoDem) did not know the
>> sampling instant of the A-D in the exchange, so had to go slow enough
>> (oversimplifying) that waveform detection worked.
>
>Didn't FCC only allow up to 53K speed?
>
They may have where the FCC reigns (the reason Paul gives is a plausible 
one). I don't _think_ there was any such limit here (UK) - certainly, 
this is the first time I can _remember_ seeing the figure of 53.
[]
-- 
J. P. Gilliver. UMRA: 1960/<1985 MB++G()AL-IS-Ch++(p)Ar@T+H+Sh0!:`)DNAf

"If just one child is saved, then we'll have created a police state for the
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