Don,
> After further testing, the microham microkeyer will diddle at
> 75 baud but timing appears off to the point where it does not
> send 75 baud intelligently.
That's not the case. Just double checked here and microKEYER,
microKEYER II, and DigiKeyer work correctly at 75 baud with MMTTY.
I have not checked them with the MMTTY plug-in specifically under
WriteLog but will do so later today.
73,
... Joe, W4TV
On 6/6/2010 10:51 AM, Don Hill AA5AU wrote:
> After further testing, the microham microkeyer will diddle at 75 baud but
> timing appears off to the point where it does not send 75
> baud intelligently.
>
> 73, Don AA5AU
> http://www.aa5au.com
> http://www.rttycontesting.com
>
> -----Original Message-----
> From: writelog-bounces@contesting.com
> [mailto:writelog-bounces@contesting.com] On Behalf Of Don Hill AA5AU
> Sent: Sunday, June 06, 2010 9:05 AM
> To: rtty@contesting.com; writelog@contesting.com
> Subject: Re: [WriteLog] MMTTY and EXTFSK at 75 baud...
>
> Thanks for the valuable information Bob! WriteLog users have an option
> available that does not use the MMTTY plug-in.
>
> I have confirmed that the MMTTY Plug-in for WriteLog will not work on 75
> Baud, this includes with or without using
> Software-generated FSK.
>
> However, you CAN use the Soundboard FSK (and Soundboard AFSK) option under TU
> Type in Rttyrite to transmit and receive 75 baud IF
> you DON'T normally use Software-generated FSK. Soundboard FSK (or Soundboard
> AFSK) is WriteLog's built-in soundboard decoder with
> it's own tuning indicator. I used this decoder for years before MMTTY came
> about and this decoder is very good.
>
> I tested the Soundboard FSK generator using a standard legacy COM port to a
> homebrew transistor FSK interface and using a virtual
> COM port with my Microham microkeyer and both appeared to transmit 75 baud
> fine. This means that if you use a Rigblaster or any
> other type of commercial interface to generate FSK on a standard legacy COM
> port, you can use the Soundboard FSK (or AFSK) TU option
> in WriteLog.
>
> But if you normally use Software-generated FSK with WriteLog to send RTTY,
> you will not be able to send 75 baud. Software-generated
> FSK was designed for 45 baud only.
>
> I agree with Bob in that if you plan on participating in the 75 baud
> contests, try your alternative set up ahead of time.
>
> Thanks again to Bob for bring this up. I will update rttycontesting.com
> today with this information and maybe a tutorial on how to
> use the Soundboard FSK (or AFSK) option with WriteLog. But it's should work
> just fine. Just go to the TU Type menu in Rttyrite and
> choose "Soundboard FSK" (or AFSK if you are running AFSK). I should be
> around today if you have any questions or concerns, shoot me
> a direct reply.
>
> 73, Don AA5AU
> http://www.aa5au.com
> http://www.rttycontesting.com
>
> -----Original Message-----
> From: writelog-bounces@contesting.com
> [mailto:writelog-bounces@contesting.com] On Behalf Of Robert Chudek - K0RC
> Sent: Saturday, June 05, 2010 11:04 AM
> To: N1MMLogger@yahoogroups.com; cq-contest@contesting.com;
> rtty@contesting.com; writelog@contesting.com; MMTTY@yahoogroups.com
> Subject: [WriteLog] MMTTY and EXTFSK at 75 baud...
>
> 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
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