Hi,

I have never seen this type of issue. But I use wirless all the time close
to my geophone. I use serial cable, not usb however.

Regards,
Jón Frímann.


> I have had some trouble keeping my WinSDR up and running.  It frequently
> shows just a blank screen, with all helicord traces gone.  Just as if I'd
> just opened the software without a seismometer connected to the computer.
> The computer is an older Dell with a 2 GHz processor and 512 Mb RAM,
> running
> WinXP with I think service pack 3.
>
> What is interesting about this phenomenon is that there is a wireless
> router
> in the house (the seismo server has no wireless capability and is not
> connected to the network) and WinSDR will work fine until someone sits
> down
> at another computer and the wireless network starts exchanging traffic.
> Then the WinSDR screen loses the displayed data and goes blank.
>
> Is it possible that somehow the USB cable from the seismometer to the
> seismo
> server computer  is acting as an antenna and picking up enough
> interference
> from the 2++GHz wireless LAN system to crash WinSDR?  WinSDR does not
> actually crash, it just loses the data traces, which disappear.  My next
> step is to dig out some old books and see if I can figure out what length
> the seismo cable would have to be to resonate at the wireless LAN
> frequency.   But I think it would have to be very short?
>
> This is another unexpected educational aspect of this hobby!   Just
> wondering if anyone else has experienced this issue?
>
> Thanks,
>
> Bob
>


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