Is it possible to increase damping to 3.0 or better with your rig ?
If Not,
Then what maximum damping can you achieve
using the damping system you have chosen ?


-----Original Message----- 
From: Richard Schneider
Sent: Monday, May 16, 2011 10:06 PM
To: psnlist@..............
Subject: Re: Photos of your station


Hi Geoff,

Thank you for the complement. I am quite new at this, building my first vertical almost a year ago. I am learning much from reading 
the mail here at PSN and other sources such as IRIS.

Regarding the free period oscillation of my AS-1 type sensor, I'm only up to 1.85 seconds.
I've read somewhere if the distance from mast spring attachment point and the booms hing point is decreased it would increase the 
free period. Mine is set to about 4 inches. It's my understanding that if the distance is reduced too much, the free running boom 
will become unstable. I am not sure what that means operationally. I believe the manufacturer of the AS-1 advertises only a 1.5 
second run.

Burying it might be interesting, but I would have a difficult time trying to make any adjustment changes such as dampening or 
balancing. My biggest issue here is a constant cycle of noise that comes with local winds as well as ocean gales just off our coast.

Richard




On Mon, May 16, 2011 at 2:04 PM, Geoffrey  wrote:
I'm no expert but that’s one of the nicest armature verticals
I have ever seen in that class of device.
Can you get a 5 or 10 second free period ?
Might this be buried without maintenance concerns ?

geoff

-----Original Message----- From: Richard Schneider
Sent: Monday, May 16, 2011 8:03 PM
To: psnlist@..............
Subject: Re: Photos of your station





Hi Larry,



I operate a homebrew AS-1 type sensor on the IRIS network.

Location: Camarillo, California

Operator: Richard Schneider

Station ID: KCMA

Network: IRIS



Near real time helicorder:

http://www.iris.edu/amaseis/schools/as1imgs/KCMA.png



Pictures: https://picasaweb.google.com/cfi2fly/AS1TypeSeismometerImproved#slideshow/5594006556700934034



Thank you,



Richard




On Mon, May 16, 2011 at 12:39 AM, Larry Cochrane  wrote:
Hi Everyone,

It has been brought to my attention that this page
http://psn.quake.net/photos/photo.html has a lot of broken links. I would like to update this page. If you have a web site that has 
pictures of your sensor and station that could be useful to new comers please send me a link so I can add it to the Photos web page.

Thanks,
Larry Cochrane
Redwood City, PSN



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