[amsat-bb] LVB tracker and SatPC32 under Windows 7/64 - OLE error 800A1F55

Bill Bordy, NJ1H nj1h at comcast.net
Mon Jun 16 15:50:25 UTC 2014

I had intermittent terminations of the USB link of LVB Tracker using the 
internal LVB Tracker USB to serial port adapter header with SATPC32 . I 
tried many different configurations to resolve and it pretty much failed 
during every satellite pass at least once when I tried to use it.

I would have to close SATPC32 and close ServerSDX manually , turn off 
the El-AZ controller power and then back on to reset the USB link, 
restart SATPC32  and then it would work again till the next USB link 
failure. It occurred randomly, but often enough to be a problem.

This occurred with three different computers running Win-XP, Vista and 
Windows 7.

As others have suggested, I replaced the USB adapter header assembly 
with a MAX-232 and now use an external ATEN USB to serial adapter.

I have had no problems with LVB Tracker for over a year since doing 
this. Rock solid!


On 6/15/2014 11:41 PM, Craig Hayhow wrote:
> I wonder if anyone can give me some advice?
> I am trying to use LVB tracker and SatPC32 under Windows 7/64 and every
> thing works fine until I start tracking a satellite and after a few minutes
> I get an OLE error 800A1F55 and the Server SDX program freezes up?
> Any ideas what is causing this and how to fix it?
> Any advice appreciated.
> Regards,
> Craig
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