Hello: Gary Lindgren;

I do not use Garys Equipment simply because I wanted to
do things myself as a hobby kinda thing.
Remember the old HEATHKITS. more fun than a
barrel of monkies.
I think if you amateurs could get together and build a kit
from the ground up you might get a lot of interest
from the technical community even if they are not amateurs
in seismology.

The only thing missing is a proper input into a
differential amplifier. You can use one mechanical
thinger but you need two identical sensors grounded
in the middle. From my viewpoint it is the only way.
Then you need a full 16 bit A/d good to the last bit
Which nowadays I just don't see.

Then you need a proper amplifier filter equalizer to
get the proper bandwidth maybe 1/20 to 3Hz.

This could be a standard for beginners to be extra pursued
later if they are so inclined.
Above 2 HZ you can have great problems if there is a lot
of human activity in the area.

Below 2 hertz human activity is probably intentional if it causes you problems.
Someone just simply don't like you.
Bounce their low rider every time they drive by.

There used to be converters that always show all the bits
you just need to strobe them into a solid number
to read the results. I do not see such converters anymore.

They seem to take time just to convert the numbers.

I use a Prairie Digital 12-40 after conversion I look
at only the top 8 bits.

I am thinking of lowering the gain and looking at all 12
but that is only a pipe dream at the moment ( I do not Smoke)
but I do dream like anyone else.

None of my ideas are original I had to experiment
to see what was best for ME.
I have no intention of capitalizing on anything.

Cheers;
geoff


----- Original Message ----- 
From: "Gary Lindgren" 
To: 
Sent: Tuesday, March 10, 2009 5:13 PM
Subject: RE: WinQuake


> Geoff,
> Could tell us more about your setup. What equipment do you have, i.e.,
> sensor, A/D converter, system to convert sensor information that goes to
> WinQuake. You may want to get Larry Cochrane's amplifier/filter and A/D
> boards. He makes it so simple. You can also get from Larry a Garmin GPS unit
> to keep your system time very accurate. It is all automatic. You use WinSDR
> to gather and display the data and when you get something interesting to
> analyze you save the data and send it to WinQuake. It's a piece of cake.
> Gary
> 
> 
> 
> 
> -----Original Message-----
> From: psn-l-request@.............. [mailto:psn-l-request@............... On
> Behalf Of Geoffrey
> Sent: Monday, March 09, 2009 6:01 PM
> To: PSN-LIST
> Subject: WinQuake
> 
> FYI:
> 
> There Is Only One Way I can Get Winquake to
> see right times for my data.
> 
> It is necessary to crop the data to the nearest
> second before giving it to Winquake.
> 
> No matter what I do WQ will not see fractions of seconds
> for the start time.
> 
> No matter what the precision is of the numbers
> WQ only will show the first sample to a whole second.
> 
> Like if I tell it 23:49: 20.4 for the first second
> it will show only 23:49:20 for the first sample
> 
> SO you must run your data until it gets to
> 23:49:21 then crop it from there to the end
> before giving it to wq and tell wq
> it is 23:49:21.0 and you can forget the fractions
> your start time may be a couple milliseconds off
> but WTHeck.
> 
> Otherwise if you do not do this things just aint right.
> 
> Also, the various filters in the WQ3 FFT used to work fine
> but since installing the new WQ3  those filters dont work (all grayed out)
> ??
> What am I doing wrong ?
> 
> cheers
> geoff
> 
> 
> 
> 
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