Hi Chris

> From:    chrisatupw@.......
> Date:    Tue, 14 Feb 2012 04:16:46 -0500 (EST)
>
>    Thanks for your interesting claims. I would be even more interested to
> receive either a circuit of some digital files of your output for a large
> quake and a comparable professional broad band seismometer for the same
> event.

Here is a 2002 hand drawn circuit schematic
http://www.infiltec.com/seismo/inf-qmsd.gif

It shows an earlier opamp, and some of the passive components
have been modified in value.  The QM-4.5LV feedback resistor (R2)
is now 4.7 mohms low noise, C1=0.022uF, and the other components
are the same as listed for the QM-1.0.  This gives the QM-4.5LV
a 1 Hz bandwidth, rather then a 4.5 Hz bandwidth as shown for the QM-4.5
components listed on this 2002 schematic.  Note that the QM-1.0
is my Lehman/AS1 amplifier design where the geophone is replaced
with a 9 kohm pickup coil and magnet.

I have at least a years data stored by AmaSeis for my latest QM-4.5LV
design, so I can provide psn, sac, etc. format time data files for
most events during 2011.  I am not sure how to provide comparable data
from a professional broad band seismometer located near my
Washington, DC location.  Any suggestions?

Cheers,

Dave
http://www.infiltec.com/seismo/qm45.htm
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