I made a rather interesting and fortuitous discovery this morning. I had been reading the microHAM reflector about USB Root Hubs:
http://groups.yahoo.com/group/microHAM/message/4212 (you will need to be subscribed to the microHAM group to see the message). I discovered that my microKEYER was indeed connected to a root hub, but was sharing the port with a USB print driver. But that's not the most interesting part! Some time ago, I had installed a PCI to USB 2.0 adapter because the 4 USB ports on the back of my Dell Dimension E310 were not enough (mouse, keyboard, label printer, microKEYER, UPS, wireless network). The microKEYER was plugged into one of the USB ports on the PCI adapter. I noticed that I did have one free USB port on the PC (native to the motherboard) so I moved the microKEYER to that port. Now when I checked the Windows XP Device Manager, I found that the microKEYER was all by itself (no sharing). But I also found that DX4WIN was now MUCH responsive to logging QSOs. Often times, I had to wait 1 or more seconds for DX4WIN to "catch up" with polling the radio, the computer would essentially freeze. That problem seems to have completely disappeared! I will have to watch for a few days to see if the random frequency corruption problem is also gone (DX4WIN would occasionally log a frequency that was 100x higher than it should be, i.e. 1,807,708 KHz instead of 18,077 KHz). So if you are having problems with DX4WIN and microKEYER, check whether the keyer is connected to a USB root hub, is all by itself on that hub, and whether it's plugged into a port directly attached to the motherboard. I can't believe I've been suffering from this problem for so long, when the fix was so simple! Thanks to Joe W4TV and Craig K4IA for making me aware of this issue. 73 - Jim AD1C -- Jim Reisert AD1C, 7 Charlemont Court, North Chelmsford, MA 01863 USA +978-251-9933, <[EMAIL PROTECTED]>, http://www.ad1c.us From [EMAIL PROTECTED] Sat Feb 24 10:07:00 2007 From: [EMAIL PROTECTED] (KR4DA) Date: Sat Feb 24 10:11:24 2007 Subject: [Dx4win] Mail returned test Message-ID: <[EMAIL PROTECTED]> test -- de KR4DA Bob Middleburg, FL HK0/KR4DA J79DA FG/KR4DA