Why wooden box is improper for LRL

[WM6]

Dowsers have a lot of trouble using LRL devices built in wooden boxes. Why?

Seems no one is, meet of those different difficulties, thinking of wooden boxes as possible sources of those problems.

Wooden boxes are great material for electronic boxes (like radios etc.) used inside in houses in relatively stable climate conditions.

But if you use high sensitive electronic incorporated in wooden boxes outside in very different climate conditions (temperature, relative humidity, mechanical stress, signal damping etc.) it is about quite another matter. Even more, those LRL electronic circuits not are only incorporated in electronic boxes, but are with very sensitive parts of circuits, as antennas, tank circuits etc., not so seldom in direct galvanic touch with wooden boxes. Yes, in direct galvanic touch with wood.

Considering only the hygroscopic properties of wood, which, taking it into changing climatic conditions, changing its conductivity, then we should not be surprised by the great whim in the operation of these creations.

I do not claim that those LRL results, using other materials, were much better than the current, which are null and void. But certainly these devices in a housing made ​​of other materials, would act more stable and would not be so strange subject of sensitivity to different climatic conditions, such as in present wooden boxes.

Using wooden boxes for such outside devices are from electronic point of view in most cases a big mistake in design.

If you wish your LRL to work stable, one important thing is to avoid wooden design especially if your sensitive circuit is coming in direct galvanic touch with LRL housing or its wooden parts.


PS: I am easily go fatigued with English, so I hope that our excellent and very discernibile science-interpreter J_P will add some more in this matter.