PSN-L Email List Message

Subject: Re: Preamp-Filter Modifications
From: ChrisAtUpw@.......
Date: Wed, 13 Sep 2000 17:30:43 EDT

In a message dated 13/09/00 08:44:24 GMT Daylight Time, efkern@............. 

> Chris,
> With all due respect, there is no GMT daylight time. It's called BST or 
> British Summer Time is it not? Which is equivalent to what we in the
> US call daylight saving time. In the interest of preserving traditon,
> let us not contemplate the alteration of traditional forms of reference.

Dear Erich Kern,

    I will approach America On Line, my Internet Provider, about this, but 
don't hold your breath in the meantime. I am trying to remember when I last 
had a cooperative response. I agree that it should be either GMT or BST.
> We do not need to assist all of the "multicultural" nutcases out there.....

    My feelings exactly.

    In the meantime, there may be some confusion in the symbols used in All capacitors are given in 
micro Farads although no units are stated and Andy seems to have used the R, 
K, M system for the resistors. 1R5 is 1.5 Ohm, 5M1 is 5.1 Meg Ohm, etc. Some 
suppliers use this system. I was not able to verify the filter circuit using 
the Burr-Brown low pass filter programme. I was attracted to the circuit by 
the use of the CAZ input OP-AMP, which minimises 1/f noise and by the WWV 
time signal decoder on the same Website.


    Chris Chapman                                       timed @ 21.30 Zulu

Public Seismic Network Mailing List (PSN-L)

[ Top ] [ Back ] [ Home Page ]

Larry Cochrane <cochrane@..............>