BID/880 -  Franton

BID 880 was only a data encryption unit and had no telegraphic mode. It was modular in construction employing a standard 19" rack mount of perhaps  9 or 10 inches high and painted Army green. Its modules were shaped like cans and were inserted into the top of the machine after removing the lid. They were fairly reliable machines except for the most common fault which was the  "K" alarm. (Can anyone expand on this?)

The BID 880 could be filled with keying material using a tape which was passed through a reader on the front panel. It was also compatible with the BID 950 as long as the 950  was in "880 mode".

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Jan 11/10