[RTTY] MMTTY and EXTFSK at 75 baud...

James Colville jimw7ry at gmail.com
Sat Jun 5 18:29:30 PDT 2010


Sounds like the contest is a bust then.... If MMTTY wont work.


MMTTY is the most used RTTY program.

73
Jim W7RY



On Sat, Jun 5, 2010 at 9:04 AM, Robert Chudek - K0RC <k0rc at citlink.net>wrote:

> This is a FYI message...
>
> Operators planning to participate in the 75 Baud contests this weekend and
> next should be aware IF they are using the popular EXTFSK driver, this
> driver is hard coded to transmit at 45.45 Baud. Typically this driver is
> used to generate FSK & PTT keying (not AFSK) by RTTY software, MMTTY in
> particular.
>
> Dave Bernstein, AA6YQ, verified this (documented) limitation. He maintains
> the MMTTY source code.
>
> How do you know whether you are using the EXTFSK driver? Bring up your
> software configured for a RTTY contest. Look at the bottom of the screen to
> see if there is an EXTFSK 1.05 button displayed on the Windows task bar. If
> it is shown, you are using the driver and will only be able to transmit at
> 45.45 Baud.
>
> There are many other RTTY packages that will allow 75 Baud TX speeds. If
> you were planning to participate in high speed RTTY, it would be a good time
> to investigate other options if you are currently using the EXTFSK driver.
>
> 73 de Bob - KØRC in MN
> _______________________________________________
> RTTY mailing list
> RTTY at contesting.com
> http://lists.contesting.com/mailman/listinfo/rtty
>



-- 
73
Jim W7RY


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