[time-nuts] How I got my FE-5680A to lock in Sydney, Australia

Jamieson (Jim) Rowe jimrowe at optusnet.com.au
Mon Feb 10 17:57:05 EST 2014

Hi Bob, Charles, Dr David, Ed and Magnus,

Thanks for those further helpful comments. OK, I will try seeing whether 'in 
between' orientations do make any difference, to provide further evidence 
regarding a possible magnetic effect. I'll also try the effect of tapping it 
with a plastic screwdriver handle. And if nothing more shows up, I'll try 
opening it up and looking for 'dry' or otherwise crook solder joints, etc.

I did find the idea of rubidium movement inside the bulb an interesting one, 
though. It's a possibility, isn't it?

Jim Rowe

-----Original Message----- 
From: Magnus Danielson
Sent: Tuesday, February 11, 2014 8:40 AM
To: time-nuts at febo.com
Subject: Re: [time-nuts] How I got my FE-5680A to lock in Sydney, Australia

On 10/02/14 16:59, Ed Palmer wrote:
> Hi Jim,
> This behaviour reinforces my thought that there's something physically
> wrong inside the unit.  I'd be tapping it with the plastic handle of my
> screwdriver while I rotated it to see if it would lose lock.
> Think of it this way:  Do you want to fix it now or have it fail again
> in a few months when you're using it for something important?

I'm with Ed here. Keep working out the systematics of this beast,
because you want to make sure it doesn't happen again. Also, it's now
that you learn, you can then run it for 10 years without learning much more.


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