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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