This device was a  complex, electronic , point-to-point teletypewriter security equipment designed for use on radio and wireline circuits both ashore and afloat. It employed  a four channel time division multiplexor telegraph terminal set. Employed were  the standards and synchronizing features of the
AN/FGC-5 OR AN/UGC-1 sets. The UCG-1 was the transistorized version of the FGC-5 set.
Selectable were tow, three and four channel modes.

Keymat was provided in the form of punched cards.  KW-22 was a vacuum tube device with about 300 tubes in the receiver and 400 in the transmitter.

The quantities shown below were  issued to the following services for service trails as authorized in a former SECRET document dated June 15, 1955

US Army - 4
USN - 6
USAF - 4
NSA -  2

Unit cost: $20,000 or $22,000 depending on the source.
Originally issued as KW-22(D)

Quantity produced:  704
Circa: 1961
Training: 17 week course at Mare Island. Eight weeks devoted to KW-22; Nine weeks to KO-5.

For a more detailed look at the KW-22, please select this link.

KW-22 (Image courtesy National Cryptologic Museum)

Contributors:

1) Ed Hannon,  Seminole, FL
2) Nick England <navy.radio@gmail.com>
3) National Cryptologic Museum PDF file on KW-22
4) https://www.nsa.gov/public_info/_files/friedmanDocuments/ReportsandResearchNotes/FOLDER_
065/41701139074046.pdf

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Sept 18/15