Because there's a lot of interest in these boxes, Dick gave me permission to post his original schematics, operating theory, and calibration instructions. These documents are © Richard Burwen, may be downloaded for study and use by individuals only, and cannot be reproduced.
Dick provided the scanned schematics at the relatively low resolution that is posted, and we don't have any other versions. He also asked not to be bothered with technical questions. If this information isn't sufficient for you, we're sorry.
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Sorry, Dick Burwen has requested that we don't give out his mail address.
Posted March 16, 1998; slightly revised Jan 30, 2000 11