A front view of the ATU without the top, end-plates, and case rim, showing the parts placement. All parts except the rotary switch are mounted to the plexiglass base plate. The switch is mounted between the front and rear panels.
A rear view of the ATU with the case fully assembled, showing final assembly materials, the rear mount of the rotary switch, and the cut-out and plate for the input and output connectors.
first printed in 72: The New England QRP Newsletter, April, 1996.