PSN-L Email List Message
Subject: Re: Whip antenna
From: ChrisAtUpw@.......
Date: Sat, 5 Apr 2008 16:20:06 EDT
In a message dated 2008/04/05, tchannel1@............ writes:
> Hi Folks, If I had a 36" whip antenna, just a piece of spring steel rod,
> with a small mass on the tip, how much would the tip move during a earthquake?
Hi Ted,
The mass should ideally NOT move at all ! It is the Earth which moves.
See the graphs at http://jclahr.com/science/psn/magnitude.html for actual
amplitides of phases.
Regards,
Chris Chapman
In a me=
ssage dated 2008/04/05, tchannel1@............ writes:
Hi Folks, If I had a 36" whip a=
ntenna, just a piece of spring steel rod, with a small mass on the tip, how=20=
much would the tip move during a earthquake?
Hi Ted,
The mass should ideally NOT move at all=
! It is the Earth which moves. See the graphs at http://jclahr.com/science/=
psn/magnitude.html for actual amplitides of phases.
Regards,
Chris Chapman
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