Quote:
Originally Posted by Radio Wrangler
Aluminium cases [for ATUs / AMUs] are better than steel. Eddy currents become reflective more than dissipative.
David
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Many decades ago - for receive purposes only - I built a conventional C-L-C ATU in a case made of Perspex to avoid the effects of nearby metal and used it well away from metal objects: it worked well with a 100 ft. 'longwire' plus an earth connection. A few years ago, I rewired it with a coil of larger diameter and used silver-plated wire: the consequent improvement in performance (with same receiver) was noticeable.
Al.