Bob,

A gentlemen named Carl Linden has taken over as the Amateur Seismologist and
has recently sent IRIS some new equipment. He is a very interested in any
suggestions and improvements for the AS-1 sensor and black box.

There are some improvement's he is making. I'm not at liberty to say what
improvement's have been made, but I think everyone involved with the AS-1
will appreciate what he has done.


Kay,

Thanks for publishing the modifications to the AS-1. We look forward to more
about the premphasis design charges made to the black box.

Also, I thank you for the manual you and Tammy Bravo put together. This was
a great help to me after I constructed my AS-1 type sensor.

Richard




On Sun, Jan 23, 2011 at 1:18 PM, Bob McClure  wrote:

>   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
>>
>
>
Bob,
=A0
A gentlemen named Carl Linden has taken over as the Amateur Seismologi=
st and has=A0recently sent IRIS some=A0new=A0equipment. He is a very intere=
sted=A0in any suggestions and=A0improvements for the AS-1 sensor and black =
box.

=A0
There are some improvement's he is making. I'm not at liberty =
to say what improvement's have been made, but I think everyone involved=
 with the AS-1 will=A0appreciate what he has done.
=A0
=A0
Kay,
=A0
Thanks for=A0publishing the modifications to the AS-1. We look forward=
 to=A0more about the premphasis design=A0charges made=A0to the black box.=
=A0
=A0
Also, I thank you for the manual you and Tammy Bravo put together. Thi=
s was a great help to me after I constructed my AS-1 type=A0sensor.
=A0
Richard=A0
=A0


=A0
On Sun, Jan 23, 2011 at 1:18 PM, Bob McClure <bobmcclure90@.........> wrote:

=
=A0 It seems for now that anyone who wants an AS-1 sensor will have to buil=
d 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 am=
plifier providing the necessary bass boost, but he is recuperating at his h=
ome in the Midlands, and presently unable to access his papers in his prima=
ry residence in Upwaltham. Meanwhile, my digital inverse filter, implemente=
d in WQFilter.exe, can be helpful. Larry is working on coding this filter f=
or use in WinQuake.


=A0I want to remind all that the connections between the spring ends an=
d the sensor are also flexure points, and deserve every bit as much attenti=
on to slip-stick friction and flat spots as the boom attachment. I have lea=
rned this from hard experience.


Bob=20





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


Hello PSN,
=A0
I would appreciate any comments regarding my AS-1 type sensor. It'=
s close to the original design. I did not like the=A0knife edge=A0aluminum =
boom=A0attached to a score mark in the aluminum mast, so I=A0modified the b=
oom=A0to 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 runni=
ng oscillations have a much longer duration. Does anyone have a better sugg=
estion? I would like to hear from you.

=A0
See my pic's here:=A0 http://picasaweb.google.com/cfi2fly/MyPict=
ures#
=A0
Also, Chris, if you read this,=A0if I reversed the coil and magnet, wo=
uld the effort be worth the results?
=A0
Thank you all,
=A0

Richard