[time-nuts] FE-5680A Mechanical Question
lists at rtty.us
Fri Jan 13 12:22:28 EST 2012
Rb's are sensitive to humidity, pressure, temperature, and magnetic field.
You can probably control the temperature. With some effort you can control
the humidity. Magnetic field and pressure are a bit harder.
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Hal Murray
Sent: Thursday, January 12, 2012 8:49 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] FE-5680A Mechanical Question
jltran at att.net said:
> While the project might be fun, for portable work, it is likely far easier
> and probably just as good (almost), to use a Tbolt.
Somebody might have numbers for that, or be able to collect them.
A TBolt that gets moved to a new location will have to do a new survey. How
long does that take? How stable is the frequency during that time. How
better is it if the TBolt stays powered during the ride?
How does that compare to a Rb? What's the recovery from power off look like
for a Rb?
How sensitive to vibration from transportation are they?
These are my opinions, not necessarily my employer's. I hate spam.
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