PSN-L Email List Message

Subject: Re: Web Site
From: Richard Webb dwebb002@.............
Date: Tue, 16 Sep 2008 14:42:54 -0400


Have you checked with the National Seismology lab at Albequerque.  
Several years ago I saw several Sprengnether 201s in operation.

Dick

Barry Lotz wrote:
> Dick
> My computer's "bad" :) . I used a different computer and I was able to 
> view the files. I saw the Sprengnther horizontal drawing on Sean 
> Thomas Morressey's web site years ago and  construct one from the 
> picture  but used STM's feedback equations , a smaller mass , his 
> feedback coil construction, and his vrdt senor. I used the finest 
> music wire I could find for the hinges. It worked well for a while. 
> It's acting somewhat erratic now. STM talked about degaussing the 
> sensor. I don't know if that can be a problem with mine. I think I 
> degaussed it when I constructed the sensor using a soldering iron but 
> I don't know if that is a one time operation. It only records more 
> local events now. I have to check the sensor for allignment and 
> cleanliness. I have somewhat  dark, not good quality photos on my 
> website www.seismicvault.com  .  I 
> suppose  you would have provided it but, did the horizontal come with 
> a parts list? It would help with a interpretation of the picture, 
> though the picture is pretty self descriptive.
> Regards
> Barry
>  
>
>
> --- On *Fri, 9/12/08, Richard Webb //* wrote:
>
>     From: Richard Webb 
>     Subject: Re: Web Site
>     To: psn-l@..............
>     Date: Friday, September 12, 2008, 5:38 AM
>
>     I don't have a specific answer to the opening problems but I did use 
>     Adobe Acrobat 6 to prepare them.  And, no problem opening them with 
>     Reader 9 which is the current version.
>
>     Dick
>
>     ChrisAtUpw@....... wrote:
>     > In a message dated 2008/09/12, barry_lotz@............. writes:
>     >
>     >> I tried to open the pdf manual files but my adobe reader gave me an 
>     >> error message. Has anyone had a problem with the files?
>     >> Regards
>     >> Barry
>     >
>     >
>     > Hi Barry,
>     >
>     >        My Acrobat 5 works fine on these files. Maybe you have an older 
>     > version?
>     >
>     >        Regards,
>     >
>     >        Chris Chapman 
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>
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