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Re: [ct-user] CT-MFJ 434

To: k1ep@arrl.net, Bob Schreibmaier <k3ph@ptd.net>;,ct-user@contesting.com
Subject: Re: [ct-user] CT-MFJ 434
From: kd4d@comcast.net
Date: Mon, 21 Mar 2005 19:27:41 +0000
List-post: <mailto:ct-user@contesting.com>
Hi Ed:

OK, then this probably isn't the problem with the MFJ.  Does it just
have four messages?

73,

Mark


> I used an MFJ voice keyer with CT 10.02.003 in ARRL DX SSB with external 
> control 
> and no problems.  I wired something up to the MFJ a few hours before the 
> contest 
> and was able to use the function keys to key the MFJ through the parallel 
> port.  
> 
> 
> At 3/21/2005 02:10 PM, kd4d@comcast.net wrote:
> >Hi Bob:
> >
> >I've successfully gotten CT 10.02.03 working under DOS with an
> >external DVK (an SCK-II in my case).  I had to write a short program,
> >lpt1init, that I run before starting CT to get this to work.  I'll send it
> >to you.  Please try it and let me know if it works.
> >
> >This old post to the CT reflector describes my problems in detail.
> >In a nutshell, CT is not correctly initializing the parallel port.
> >If the DVK has more than four messages available (the SCK-II
> >has six) there seemed to be no way to get it to work.  If
> >you only needed four control signals, you had to start CT,
> >stop it, re-start it, and select each of the four messages to
> >get it to work.  Anyway, I wrote a short program to set the
> >parallel port up correctly before running CT.  I'll send it to
> >you seperately.  Here's the old posting about what I had to
> >do to get it to work:
> >
> >http://lists.contesting.com/pipermail/ct-user/2004-February/008128.html
> >
> >Good evening:
> >
> >I have had the opportunity to do more testing with the SCKII and CT10.004.
> >
> >John Evans, N3HBX, and I have had problems with the SCKII going into
> >record modes or otherwise acting strangely when starting CT.  There are
> >two different things happening.
> >
> >First, CT is NOT clearing the DVK control pins on LPT1, even if the DVK
> >is enabled on LPT1.  This means that if any of the lines are high, the SCKII
> >tries to go into record mode.  This happens a lot if the computer is booted
> >into Windows 3.1 or something and then an exit to DOS is performed.
> >
> >There are SIX of these lines going to the DVK, though CT only supports
> >four of them.  These lines are mapped to the DATA register of lpt1. (There
> >is actually a seventh line (DVK Abort)).
> >
> >The only work-around we've found is to run another program to clear the
> >DVK control lines before running CT and before turning on the SCKII.
> >
> >Second, CT is enabling the PTT line on LPT1 when it is started.  Starting
> >CT with no .bin file, and creating a new one, is causing PTT to be enabled
> >until setup is complete.  It turns out that this happens ONLY if the strobe
> >line on LPT1 is high when CT is started.  This means this only happens the
> >FIRST time you run CT.  The second time you run CT, strobe is already
> >low and PTT does not get asserted.  It may be that the radio 1/2 select
> >pin is also not correctly initialized.
> >
> >Also, apparently, PTT is never cleared unless LPT1 is selected as the
> >CW port, even in SSB mode.
> >
> >This behavior is causing problems if an SCKII is connected to the parallel
> >port, at least on some computers.
> >
> >I have written a very short program, called lpt1init.exe, which clears the
> >DVK bits, PTT and CW keying and asserts the strobe line.  Running
> >this before starting CT and turning on the SCKII keeps the SCKII
> >from going crazy.  If anyone would like either the trivial source code,
> >or the lpt1init.exe program, let me know.
> >
> >On some computers, the SCKII is unusable with CT without a
> >workaround like this.
> >
> >73,
> >
> >Mark, KD4D
> >
> >
> >> One additional data point.  I tried running CT-DOS
> >> version 10.02.03.  It, too, did not key the voice
> >> keyer.  Went back to 9.87 and it works like a champ.
> >> 
> >>  >After the contest (of course) and "just for grins,"
> >>  >I tried to run my interface box using CTWin 10.02.03,
> >>  >NA 10.59 in a DOS window on Windoze 98SE, and CT-DOS
> >>  >9.87, also in a DOS window.  NA and CT-DOS keyed
> >>  >fine, although I still need to determine from where
> >>  >the hum is coming.  CTWin didn't key it at all.
> >>  >Backtracked to CTWin 9.92.01 -- it also didn't key
> >>  >the interface at all.
> >> 
> >> 73,
> >> Bob
> >> 
> >> -- 
> >> +----------------------------------------------+
> >> | Bob Schreibmaier K3PH | E-mail: k3ph@ptd.net |
> >> | Kresgeville, PA 18333 | http://www.dxis.org  |
> >> +----------------------------------------------+
> >> 
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