PSN-L Email List Message
Subject: Re: Homade Geophone
From: Stephen & Kathy skmort@..........
Date: Sat, 06 Aug 2005 16:03:50 -0700
Question,,, I understand that the 1 sec AS-1 vertical uses an
amp-filter which compensates for the signal rolloff so that it works out
to about 25 or 30 sec.,,,, is the schematic for it, or a similar
amp-filter available anywhere???? I'd like to adapt it to use with my
4.5 sec vertical!! I can do it after the fact, using Bob McClures
excellent software, but would like to fix the signal before the A/D
converter, to save a few steps!! Interesting that they give details
on building the AS-1 sensor, but not the electronic,, that I can find??
Thanks in advance,
PSN Station #55
near Pilot Hill Ca. USA
John or Jan Lahr wrote:
> I've posted some pictures of a 1 Hz vertical seismometer that leaves a
> lot to be desired but is relatively quick and easy to build:
> http://jclahr.com/science/psn/wooden/ . If it does a reasonable job of
> recording earthquakes I'll post added details.
Public Seismic Network Mailing List (PSN-L)
[ Top ]
[ Back ]
[ Home Page ]