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Butch Magee wrote:
I'm looking for a supplier of project boxes (metal). What I need right now is a 4 x 7 x 5 in. Or numbers close to this, abt. 1/2in either way for a little ant. tuner I want to put together. ========================= Suggest you don't make the enclosure too small for a matching box (tuner). Any inductor too near metal , will affect the inductor's Q A rule of thumb is to keep the inductor away from the enclosure not less than 1 diameter(of the inductor) For this reason I am constructing an antenna matching unit in a plywood enclosure or perhaps MDF ,although I understand MDF is no longer used in the USA,because in contains phenolic resin. Perhaps someone in the know on this NG can confirm this. Frank GM0CSZ / KN6WH |
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