[GreenKeys] Bit rate question

[Sam Etler]

Robert, Did they use start bits? I'm going by what Jim Haynes wrote about
deriving words per minute rates from baud rates and he makes no mention of
start bits. Only stop bits that had varying lengths depending on the
equipment and the network operator.

Rice, Thanks for the scans, I'll have to take a more in depth look. A quick
skim didn't clear anything up but I'm new at this.

sam

On Wed, Sep 14, 2011 at 8:44 AM, <WA5CAB at cs.com> wrote:

> Sam,
>
> You forgot the Start bit.
>
>
> In a message dated 09/14/2011 10:04:25 AM Central Daylight Time,
> etler at cs.wisc.edu writes:
>
> Playing around with some math there's two possibilities I found for this.
> First, if you used a 6.5 unit code per bit (five data bits plus a 1.5 unit
> stop bit) you end up with almost exactly 564 characters per second which
> works out to 94 words per minute. Sort of an odd speed. It also sort of
> works if you just use a 6.0 unit code (1.0 unit stop bit). Then you get
> almost exactly 611 cps or 101.83333... wpm. Doesn't work quite as nicely
> though the 611 is pretty clean. It's possible there's other data bit + stop
> bit + ??? bit combinations I didn't think of that would work equally well.
>
> Or maybe I'm way off here and it's something completely different.
>
> So does anyone know what the deal is with this?
>
> sam
>
>
>
> Robert & Susan Downs - Houston
> wa5cab dot com (Web Store)
> MVPA 9480