Teletype Torn Tape Transmitter Group Restoration

Message ID Unit

 The Message ID Unit inserts a Beginning-of-Message header with Channel ID  and Sequential Message Number. It also controls ping-pong operation between its associated LBXD and LXD TDs for message transmission,

tty-number-module-03.JPG (179409 bytes)

tty-number-module-04.JPG (150224 bytes)

 tty-number-module-01.JPG (124748 bytes) tty-number-module-02.JPG (166733 bytes)

Triple TD with multi-contact LBXD

 The LBXD includes a parallel-in to serial-out distributor which is also used to transmit characters from the Message ID unit as well as the message tape.

28-trip-td-01.jpg (68509 bytes)

28-trip-td-02.jpg (77217 bytes) 28-trip-td-03.jpg (87459 bytes)

Triple TD with single-contact LXD 

 The LXD just reads a message tape with serial output

LMXB202_9189.JPG (1609415 bytes)		 LMXB202_9183.JPG (1750922 bytes) LMXB202_9188.JPG (1375495 bytes)

Testing after restoration, wiring, and assembly
Test with three Message ID units, three LBXD TDs, three LXD TDs
IMG_4437.JPG (3981178 bytes)		 Test with three Message ID units, three LBXD TDs, three LXD TDs
IMG_4438.JPG (3538011 bytes)		 Completed unit installed in a rack with the Message ID unit front panel and TD covers - Unfortunately I don't have the original cabinet
28-xmtr-printer.JPG (3122197 bytes)