Bob,

But all those inductors surrounding the crystal will be sensitive to magnetic 
flux variations and could cause spurs and jitter..

Bye
Said

Sent From iPhone

On Dec 30, 2012, at 18:04, Bob Camp <li...@rtty.us> wrote:

> Hi
> 
> 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.
> 
> Bob
> 
> On Dec 30, 2012, at 6:27 PM, Magnus Danielson <mag...@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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> 
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