[Skimmertalk] My QS1R died during CQ WW CW

Pete Smith N4ZR n4zr at contesting.com
Tue Dec 2 16:29:11 EST 2014

I noticed something similar here, but thought I was just having antenna 
problems.  I don't recall that things were particularly busy at that 
time, though, so maybe it was just my antenna.

73, Pete N4ZR
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On 12/2/2014 3:42 PM, W3OA wrote:
> Hi Bob -
> I also had a problem with SkimServer/QS1R during CQWW.  Don't know if 
> it's related to your problem.
> I was running 192 Khz on the six contest bands and I noticed that 
> periodically the number of decoders shown would drop drastically to 
> practically zero.  Some times that number would go back up to normal 
> values but other times it didn't.  I tried restarting SkimServ and 
> cycling the QS1R power but neither prevented the problem from 
> recurring.  I finally cured the problem by dropping to just five 
> bands, still at 192 Khz.
> I suspect this may be a power problem.  I do have the bigger power 
> supply Phil sells for use with SkimServ.  Maybe there were so many 
> signals on the bands that our QS1Rs worked harder than ever before.
> 73 - Dick, W3OA
> [Skimmertalk] My QS1R died during CQ WW CW.eml
> Subject:
> [Skimmertalk] My QS1R died during CQ WW CW
> From:
> "Bob Wilson, N6TV" <n6tv at arrl.net>
> Date:
> 12/2/2014 11:21 AM
> To:
> SkimmerTalk Reflector <skimmertalk at contesting.com>
> It appears that my QS1R had a hardware failure just after 0947z November
> 30th (during CQ WW CW), after it ran Skimmer Server continuously for a
> couple of days.
> Rebooting Windows and power cycling the SDR makes no difference.
> Skimmer Server reports an error and repeats "Reloading FPGA."   CW 
> Skimmer
> reports "FpgaCommand/usb_control_msg failed."  HDSDR reports "Cannot read
> from SDR".
> The red PWR LED on the QS1R is lit, and the USB device is detected OK by
> the Windows device manager (under "libusb-win32 devices/QS1R Direct
> Sampling Receiver", so I suppose the power supply is OK (it's the 2A
> supply).
> Maybe it overheated?  Time for a new QS1R board?  It's an older one, 
> not of
> recent generation.  Has anyone else on this list experienced a similar
> failure?
> 73,
> Bob, N6TV
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