[GreenKeys] Bit rate question

Sam Etler etler at cs.wisc.edu
Wed Sep 14 17:06:05 EDT 2011


Thanks, I have a physical copy or two though in a somewhat myopic way I've
only really looked at the telephone parts :-)

Well if anyone does know the source of this government bit-rate I'd love to
hear it.

sam

On Wed, Sep 14, 2011 at 1:16 PM, Jim Haynes <jhhaynes at earthlink.net> wrote:

> On Wed, 14 Sep 2011, Sam Etler wrote:
>
>  Are there any recommended reading materials that cover good basics of
>> telegraphy? I've come across a number of books from the 1800s and early
>> 1900s but if anyone has some specific references they recommend I'd love
>> to
>> hear it.
>>
>>  "Principles of Electricity Applied to Telephone and Telegraph Work" by
> AT&T Long Lines.  Several editions, and at least one of them is online
> as a pdf.  I think if you google for it you will find it.
>
> As for this "government rate" bit rate, I guess we need some former
> Bell System techs who used the test set who might know how it was used.
> We've been talking about start-stop, but it could have been synchronous
> as well.
>
>


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