One could always wrap the assembly with its impaired mu metal shield in several 
layers of flexible magnetic shielding foil to regain the desired magnetic 
shielding e.Most such foils can be cut with scissors without significant effect 
on their magnetic properties. 
Bruce

    On Tuesday, 3 January 2017 11:46 AM, Bob Camp <kb...@n1k.org> wrote:
 

 Hi


> On Jan 2, 2017, at 5:02 PM, Bruce Griffiths <bruce.griffi...@xtra.co.nz> 
> wrote:
> 
> 
> Maybe a waterjet cutter would  imapct less on the shielding properties of 
> tthe mumetal?
> 

Maybe …. pretty good bet that the guys modifying these in their living room 
aren’t focused on much more than getting them working as fast as they possibly
can. 

Bob

> Bruce
> 
> On Monday, January 02, 2017 12:58:55 PM Bob Camp wrote:
>> Hi
>> 
>>> On Jan 1, 2017, at 7:31 PM, wb6bnq <wb6...@cox.net> wrote:
>>> 
>>> Hello Mathias,
>>> 
>>> I think you did not quite understand how the calibration process works
>>> with that unit.  The factory procedure is to set the pot to minimum and
>>> then bring the DDS up to the step that produces the closest 
<snip>
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