Some of this is the difference between a ham radio club project and a commercial product.? Originally I built an SO2R Box and brought it to a YCCC meeting.? WW1M saw it and said he could lay out a PC board.? N4BAA said he could design a box.? We expected to build fifteen of them.

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??? Paul, K1XM

... from a person with quarter century In QC department - there's special kind of "aggressive" washes specifically designed to penetrate coating and provide acceptable electrically ground connection.