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More images are available for Friday, February 17th, 2012
CMJ-TU Board
| "CMJ" stands for "Chuck, Mike and Jerry." "TU" stands for "Terminal Unit." Chuck is me — I designed the board, Mike did the PCB layout (manually, on a light table) and Jerry was the financial backer of the project. This design was used with the Radio Shack Color Computer's side port via the CMJ-IF interface board; it provided digital demodulation of various modes such as CW, SSTV, RTTY and so on. This is the first prototype; the case hadn't been designed yet. 1983. #design #6809 #florida #cmjtu #cmj #sstv #pcb
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