[WT-support] Stuttering CW

[Rudolf Schwenger]

Hi Doug,

sounds odd. I've been using an IC-781 and WT for years and never experinced that problem. However, in the center of my station is the microHAM microKEYER connected to an USB port of my Pentium III notebook (1 GHz, WINDOWS XP prof). Controlling the radio (now an IC-7800, formerly the IC-781) is handeled through the virtual port COM 5 (created by the USB Device manager of the microKEYER) and sending the CW-messages is handeled through the virtual port COM 8 created the same way.

A year ago, when visiting a friend  I took part in a cw-contest using my notebook (running WinTest) and his station (IC756, I believe). Since I did not want to bring my microKEYER the cw-messages were handled through a cable between the LPT-port of my notebook (real port, no virtual port) and his TRX.  Naturally the cable was configured in such a way that one or transistors in one of the connectors did the switching as suggested in the SW manual of RCKLOG, a contestlogger which I used for a number of years before changing to WINTEST.

I wish you good luck in solving the problem.

vy 73 de Rudy, DJ3WE


  ----- Original Message ----- 
  From: Doug Grant 
  To: support at win-test.com 
  Sent: Monday, January 15, 2007 12:31 AM
  Subject: [WT-support] Stuttering CW


  I am a new user of Win-Test, and am having problems with "stuttering" CW. I don't have this problem with CTWin.

  I am using LPT1 interface. WinXP running on a 2.4 GHz P4 machine.

  The symptom is that occasionally a part of a character is extended (i.e. very looooooong dash, or a dot that sounds like a dash).

  I have an IC781connected on LPT4 as Radio 2 (Radio 1 is not in operation now...).

  Zone Alarm and Norton AV 2006 running (but shutting them off did not fix the problem). Disconnecting the wireless network did not help.

  I read previous messages on this topic, and have verified that the port address is correct, and "never use an interrupt" is ticked.

  I looked at the task manager, and there are a lot of things running. I tried changing the priority of wt.exe to real-time and it did not help.

  The only process that seems to run frequently is svchost.exe, and there are several instances of it showing in the task manager.

  It is worst if I have several windows open, and move one of them around the screen...the CW speed slows way down and characters get messed up. Thought maybe it was a display issue. Tried unticking the "Enable Write-combining" box in the Display section of control panel. Also played with the hardware acceleration settings for the display with no improvement.

  I can only guess that something in the display handling is conflicting with CPU priorities.

  Any suggestions?

  73,

  Doug K1DG


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