Hi Brett,

Congratulations on the great correlation between your seismometer and 
the "pro" model. An A - B trace of background or of an event would be 
interesting. It might be a bit tedious to get the gain matched just right.

Karl



Brett Nordgren wrote:
> Hi Bob,
> 
> At 11:37 AM 9/12/2009 +0000, you wrote:
>> The seismograms look like they came from the same sensor to me.  
>> But...if they didn't, I'll be building one of your FBV instruments!
> 
> Glad you are interested.  We'll be happy to help.
> 
>> Could you show us another two seismograms with background noise and 
>> then physically/electrically offset the FBV to identify it?
> 
> I'm working on that right now.  Do you know of any way to use WinQuake 
> to do what you want.  So far I have only been able to do that with 
> WinSDR and with that I can only get the two instruments' scale factors 
> to within about 17% of each other.  Otherwise, it is looking good.
> 
> More when I get some results.
> 
> Brett

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