Dr. Muza,

With the "assumption" that of the 3, you mention; you are looking for a
"classroom demonstrator" that is only
used for "light/cursory" education....I'd suggest the SEP.  Its a simple
coil and magnet induction setup; but looks very long
term reliable and well structurally designed and made.  It would likely
require simple screw tilt or centering seasonal adjustments once in awhile.
It has free web programs and seems to have great recommendations, many
affiliated educational stations, and apparently many volunteers that help
enhance its use.

The Rockwave would be my second choice.  It is a lot more technically
involved via capacitive pickup and feedback and
computer programs.  Unfortunately; I do not know how really reliable it is
overall, as from looking outside of the Rockwave web site, I've found no bad
references as too reliability....which thus far appears to be a good sign.
It would appear to be
capable for more advanced studies...if....that is part of your plan and/or
evolves eventually for you or your students.

Both the above seem to be around the same price range and are intermediate
to long period horizontals that will likely
pick up significant quake phases around the world.

The AS-1 is a older design and generally limited to  "P" quake phase short
period vertical signals.  It won't be able to pick up the long range "S" and
"L" teleseismic large magnitude quake surface wave phase signals from around
the world, that the first two will much more easily do.

I  have none of the three....this is only my limited personal opinion.

Meredith Lamb







On Fri, Jul 24, 2009 at 3:23 PM, Jay Muza  wrote:

> Hi
> I would like to purchase one of the inexpensive Lehman type seismometers
> currently on the market.  The three I am considering are the AS-1, the UK
> School of Seismology SEP Seismometer System, and the Rockwave HS-3.  Any
> guidance..any at all...would be greatly appreciated.  Thank you.
>
>
> Dr. Jay Muza
> Department of Physical Sciences
> Broward College
> Davie, FL  33314
>
> Office: 954.201.6771
> Cell:    954.736.8231
>
> jmuza@...........
>
> Please Note: Due to Florida's very broad public records law, most written
> communications to or from College employees regarding College business are
> public records, available to the public and media upon request. Therefore,
> this email communication may be subject to public disclosure.
>
> Please consider the environment before printing this email.
>
> __________________________________________________________
>
> Public Seismic Network Mailing List (PSN-L)
>
> To leave this list email PSN-L-REQUEST@.............. with
> the body of the message (first line only): unsubscribe
> See http://www.seismicnet.com/maillist.html for more information.
>
Dr. Muza,
=A0
With the "assumption" that of the 3, you mention; you are lo=
oking for a "classroom demonstrator" that is only
used for "light/cursory" education....I'd suggest the SE=
P.=A0 Its a simple coil and magnet induction setup; but looks very long
term reliable and well structurally designed and made.=A0 It would lik=
ely require simple screw tilt or centering seasonal adjustments once in awh=
ile.=A0 It has free=A0web programs and seems to have great recommendations,=
=A0many affiliated educational stations, and apparently many volunteers tha=
t help enhance its use.=A0 

=A0
The Rockwave would be my second choice.=A0 It is a lot more technicall=
y involved via capacitive pickup and feedback and 
computer programs.=A0 Unfortunately; I do not know how really reliable=
 it is overall, as from looking outside of the Rockwave web site, I've =
found no bad references as too reliability....which thus far appears to=A0b=
e a good sign.=A0 It would appear to be

capable for more advanced studies...if....that is part of your plan an=
d/or evolves eventually for you or your students.
=A0
Both the=A0above seem to be around the same price range and are interm=
ediate to long period horizontals that will likely
pick up significant quake phases=A0around the world.=A0
=A0
The AS-1=A0is a older design and generally limited to =A0"P"=
 quake phase short period vertical signals.=A0=A0It=A0won't be able to =
pick up the long range "S" and "L" teleseismic large ma=
gnitude quake surface wave phase signals from around the world, that the fi=
rst two will much more easily do.=A0 

=A0
I=A0 have none of the three....this is only my limited personal opinio=
n.
=A0
Meredith Lamb
=A0
=A0
=A0
=A0
=A0
=A0=A0 


On Fri, Jul 24, 2009 at 3:23 PM, Jay Muza <jmuza@...........&=
gt; wrote:

Hi
I would like to purchase o=
ne of the inexpensive Lehman type seismometers currently on the market. =A0=
The three I am considering are the AS-1, the UK School of Seismology SEP Se=
ismometer System, and the Rockwave HS-3. =A0Any guidance..any at all...woul=
d be greatly appreciated. =A0Thank you.



Dr. Jay Muza
Department of Physical Sciences
Broward College<=
br>Davie, FL =A033314

Office: 954.201.6771
Cell: =A0 =A0954.736.8=
231

jmuza@...........
Please Note: Due to Florida's very broad public records law, most wri=
tten communications to or from College employees regarding College business=
 are public records, available to the public and media upon request. Theref=
ore, this email communication may be subject to public disclosure.


Please consider the environment before printing this email.

____=
______________________________________________________

Public Seismi=
c Network Mailing List (PSN-L)

To leave this list email PSN-L-REQUEST@.............. with
the body of the message (first line only): unsubscribe
See http://www.seismic=
net.com/maillist.html for more information.