[LIB] Crystals and time

[Matthew Hanson]

Date: Fri, 31 Jan 2003 06:31:39 +0000
From: "Matthew Hanson" <[EMAIL PROTECTED]>
Subject: Crystals and time

From: Rick <[EMAIL PROTECTED]>

Temperature changes will affect the oscillation rate of a crystal.  Some
older two way radios had crystal ovens to keep them at a constant
temperature so the frequency wouldn't drift.  I'm sure you'll find that
the time change varies with the amount of power up time.

Hmmm... maybe that's why cheap watches that stay right on your warm wrist maintain time so well.

I just started this group today.  I'm looking at buying a 50ct at the
moment.  Any tips good or bad as to what to watch out for?

There was that recent post for a 70CT. But usually EBay is the place to find them

Matt


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