[Elecraft] Problems with erratic USB/serial connection

[GDanner]

My ancient Prolific USB to serial converters have been ported from XP to 
Windows 7 and recently to Windows 8.1.
They work flawlessly - both versions of Windows installed the proper drivers 
with no direct intervention from me.

You might uninstall the USB converter, unplug it, reboot and then plug in 
the converter and see if Windows installs it correctly.
I have had success with this "repair" for problem devices in the past; 
including a back-up drive with Windows 7.
73
George
AI4VZ

-----Original Message----- 
From: Walter Underwood
Elecraft switched to FTDI chips in mid-2010, so the Prolific driver isn't 
used for more recent cables. This page has drivers for both chips.
http://www.elecraft.com/K3/k3_software.htm#drvrs
wunder
K6WRU

On May 27, 2014, at 9:11 AM, "Dennis McAlpine" <dbmcalpine at earthlink.net> 
wrote:
> I have been using the KUSB USB/serial converter between my K3 and PC for
> both DXLab and n1mm.  Lately, I have been having trouble with erratic
> frequency readings, mainly on n1mm but sometimes on DXLab.  On n1mm, this
> seems to happen mainly when I change bands or after the radio has been in
> standby without transmitting for a while.  I also have to run the USB at
> 19200 rather than 38400.  I updated the Prolific driver with no effect.
> Anyone got a solution to this problem?  Barring that, what are people 
> using
> for a USB/serial converter now days since I have used the old KUSB for 
> many
> years now? Thanks.
> > 73,
> > Dennis, K2SX