[GreenKeys] Changing speeds on a Lorenz Lo-15b

[Duncan Brown]

Jeff,

I knew you wanted the challenge!

(I just wanted others to know that the speed difference between 45 & 50 
baud isn't that great.)

Have fun,

Duncan
K2OEQ

On 12-Dec-15 15:54, Jeffrey D Angus wrote:
> On 12/12/2015 2:43 PM, Duncan Brown wrote:
>> I forgot to add - you can probably find a spot on the Range Finder that
>> will copy fine for both 45 & 50 baud. Then you have an _automatic_,
>> _adaptive_ machine that will copy both 45 & 50 baud with no speed
>> selection needed!!
> Or I could set the machine speed to 63 WPM and be wrong at both
> speeds.
> The whole point here is that the i-Telex guys are mostly running 50
> Baud, and most RTTY operation is at 45.45 Baud.
> Determining correct motor speed and controlling isn't that big a deal.
>
> I did the math for the phase locked loop, and in an 18 bit binary word
> for the divider, I only have to change a single bit for the two different
> speeds.
>
> This way, I can be right for both speeds.
>
>


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