[time-nuts] FE-5650A option 58 tuning word for 10 MHz output

Attila Kinali attila at kinali.ch
Mon Jan 2 18:44:04 EST 2017

On Tue, 03 Jan 2017 11:02:54 +1300
Bruce Griffiths <bruce.griffiths at xtra.co.nz> wrote:

> Maybe a waterjet cutter would  imapct less on the shielding properties of 
> tthe mumetal?

I doubt it. mu-metal is pretty sensitive to vibration as well and a
waterjet creates plenty of that. But anealing mu-metal is pretty simple,
if one has enough space to build a furnace in the backyard. All you have
to do is find a wall material that can withstand the 1000-1500°C annealing
temperature and which can be flooded with hydrogen is enough.

Flooding the furnace with hydrogen is not dangerous, as long as the
interior is completely flooded (no oxygen) and the hydrogen leaks
out at well controlled points, where it can burn off. There are 
descriptions how to do that out there. The only problem is that you need
enough space around the furnace for the hydrogen flames to not cause any
trouble. Being outside also helps to prevent hydrogen build-ups on the
ceiling while initially flooding the furnace or shuting it off.

			Attila Kinali
It is upon moral qualities that a society is ultimately founded. All 
the prosperity and technological sophistication in the world is of no 
use without that foundation.
                 -- Miss Matheson, The Diamond Age, Neil Stephenson

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