[time-nuts] time-nuts Digest, Vol 101, Issue 152

Bob Camp lists at rtty.us
Mon Dec 31 02:04:18 UTC 2012


Precision crystals have clips made from nickel. The posts are likely Kovar. That's been true for a *long* time. Neither one is very magnetic. Both likely are hard enough to be even less magnetic than they might be.


On Dec 30, 2012, at 6:27 PM, Magnus Danielson <magnus at rubidium.dyndns.org> wrote:

> Bob,
> On 30/12/12 23:27, Bob Camp wrote:
>> Hi
>> A quartz crystal in insensitive to magnetic field. This being
>> Time Nut's that's not the whole story.
> As I recall it, the steel clips sometimes used to hold the resonators is claimed to be one of the sources for static magnetic field sensitivity. The mounting has developed since then, so I wonder how much that is relevant to new oscillators, but could still be possible to find for older ones.
> Cheers,
> Magnus
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