Jerry,
Here is one photo from a middle school...
http://www.oregonshakes.com/Seismographs/NMS/DSC01349med.jpg
Kay

  ----- Original Message -----=20
  From: gpayton@................
  To: psnlist@.................
  Sent: Sunday, January 23, 2011 2:15 PM
  Subject: Re: AS-1 Type Sensor


  AMEN on Chris!  Excellent & Beautiful drawing.  Do you have photos of =
finished instrument?

  Jerry Payton


  From: Kay Wyatt=20
  Sent: Sunday, January 23, 2011 4:06 PM
  To: psnlist@.................
  Subject: Re: AS-1 Type Sensor

  Bob,

  I have a little more update to date information on the AS-1.  You are =
correct that Jeff Batten passed away.  His wife has been able to engage =
a friend who is an electrical/mechanical engineer into taking on Jeff's =
work.  There is quite a bit of backlog in providing AS-1 seismometers to =
the IRIS Seismographs in Schools project http://www.iris.edu/hq/sis so =
he will be concentrating on that first.  However, I am told by IRIS that =
he is planning on making improvements to Jeff's design and will be =
working on that as soon as he can catch up.

  Chris Chapman has provided me with one of his period extending circuit =
designs which I am testing.  Chris has been an invaluable resource to =
me.  I am so glad that he is back online.  What a resource he is!

  Kay Wyatt


    ----- Original Message -----=20
    From: Bob McClure=20
    To: psnlist@.................
    Sent: Sunday, January 23, 2011 1:18 PM
    Subject: Re: AS-1 Type Sensor

      It seems for now that anyone who wants an AS-1 sensor will have to =
build their own. Chris Chapman informed me that GeoffBatten =
unfortunately died a couple of months back and his widow does not seem =
to have found anyone to make more AS-1's. I do not know how hard it will =
be to obtain the BlackBox amplifier that is a vital part of the AS-1 =
system. Chris may be eventually able to supply us with a circuit diagram =
of an amplifier providing the necessary bass boost, but he is =
recuperating at his home in the Midlands, and presently unable to access =
his papers in his primary residence in Upwaltham. Meanwhile, my digital =
inverse filter, implemented in WQFilter.exe, can be helpful. Larry is =
working on coding this filter for use in WinQuake.

    I want to remind all that the connections between the spring ends =
and the sensor are also flexure points, and deserve every bit as much =
attention to slip-stick friction and flat spots as the boom attachment. =
I have learned this from hard experience.

    Bob


    On Sun, Jan 23, 2011 at 2:54 PM, Richard Schneider =
 wrote:

      Hello PSN,

      I would appreciate any comments regarding my AS-1 type sensor. =
It's close to the original design. I did not like the knife edge =
aluminum boom attached to a score mark in the aluminum mast, so I =
modified the boom to mast attachment. I am using two razor blades. One =
on the boom and one on the mast. Hardened steel on steel. Friction is =
much less. Free running oscillations have a much longer duration. Does =
anyone have a better suggestion? I would like to hear from you.

      See my pic's here:  =
http://picasaweb.google.com/cfi2fly/MyPictures#

      Also, Chris, if you read this, if I reversed the coil and magnet, =
would the effort be worth the results?

      Thank you all,

      Richard








Jerry,
Here is one photo from a middle =
school...
htt=
p://www.oregonshakes.com/Seismographs/NMS/DSC01349med.jpg
Kay
 

  
----- Original Message ----- 
  From:=20
  gpayton@............. 
  
To: psnlist@.............. =

  
Sent: Sunday, January 23, 2011 =
2:15=20
  PM
  
Subject: Re: AS-1 Type =
Sensor
  


  

  

  
AMEN on Chris!  Excellent & Beautiful drawing.  Do =
you have=20
  photos of finished instrument?
  
 
  
Jerry Payton
  
 
  
  

  
 
  

  
From: Kay Wyatt 
  
Sent: Sunday, January 23, 2011 4:06 PM
  
To: psnlist@.............. =

  
Subject: Re: AS-1 Type Sensor
  
 
  
  
Bob,
  
 
  
I have a little more update to date =
information on the=20
  AS-1.  You are correct that Jeff Batten passed away.  His =
wife has=20
  been able to engage a friend who is an electrical/mechanical engineer =
into=20
  taking on Jeff's work.  There is quite a bit of backlog in =
providing AS-1=20
  seismometers to the IRIS Seismographs in Schools project http://www.iris.edu/hq/sis so =
he will be=20
  concentrating on that first.  However, I am told by IRIS that he =
is=20
  planning on making improvements to Jeff's design and will be working =
on that=20
  as soon as he can catch up.
  
 
  
Chris Chapman has provided me with one of his =
period=20
  extending circuit designs which I am testing.  Chris has been an=20
  invaluable resource to me.  I am so glad that he is back =
online. =20
  What a resource he is!
  
 
  
Kay Wyatt
  
 
  
 
  
    
----- Original Message ----- 
    From:=20
    Bob=20
    McClure 
    
To: psnlist@.............. =

    
Sent: Sunday, January 23, =
2011 1:18=20
    PM
    
Subject: Re: AS-1 Type =
Sensor
    
 
  It seems for now that =
anyone who=20
    wants an AS-1 sensor will have to build their own. Chris Chapman =
informed me=20
    that GeoffBatten unfortunately died a couple of months back and his =
widow=20
    does not seem to have found anyone to make more =
AS-1's.=20
    I do not know how hard it will be to obtain the BlackBox amplifier =
that is a=20
    vital part of the AS-1 system. Chris may be eventually able to =
supply us=20
    with a circuit diagram of an amplifier providing the necessary bass =
boost,=20
    but he is recuperating at his home in the Midlands, and presently =
unable to=20
    access his papers in his primary residence in Upwaltham. Meanwhile, =
my=20
    digital inverse filter, implemented in WQFilter.exe, can be helpful. =
Larry=20
    is working on coding this filter for use in WinQuake.

I want =
to=20
    remind all that the connections between the spring ends and the =
sensor are=20
    also flexure points, and deserve every bit as much attention to =
slip-stick=20
    friction and flat spots as the boom attachment. I have learned this =
from=20
    hard experience.

Bob


    
On Sun, Jan 23, 2011 at 2:54 PM, Richard =
Schneider=20
    <cfi2fly@.........> =
wrote:

    
      
Hello PSN,
      
 
      
I would appreciate any comments regarding my AS-1 type =
sensor. It's=20
      close to the original design. I did not like the knife edge =
aluminum boom=20
      attached to a score mark in the aluminum mast, so I modified the =
boom to=20
      mast attachment. I am using two razor blades. One on the boom and =
one on=20
      the mast. Hardened steel on steel. Friction is much less. Free =
running=20
      oscillations have a much longer duration. Does anyone have a =
better=20
      suggestion? I would like to hear from you.
      
 
      
See my pic's here:  http://picasaweb.google.com/cfi2fly/MyPictures#
=

      
 
      
Also, Chris, if you read this, if I reversed the coil and =
magnet,=20
      would the effort be worth the results?
      
 
      
Thank you all,
      
 

      =
Richard

=