US Navy RTTY Equipment - Patch Panels

RTTY is also called RATT (Radio Teletype)

Main Vintage Navy Radio Page
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Please send me e-mail if you have more info or links for me to add
thanks, Nick KD4CPL

This page is for RTTY equipment.
Go to Navy Teletype Page for actual TTY equipment

CONTROL BOXES

C-1004/SG	shipboard use located near TTY unit turns xmtr off/on selects AFSK (tone) or FSK (CFS) wiring & operation info manual NAVSHIPS 92279
TSEC/KWX-7	sync control switch for KW-7 crypto unit	photos from ebay via Jerry Proc
ID-866/SG	indicator

TTY PATCH PANELS

Each loop or circuit contains the following jacks:

LPG (looping jacks) normally closed circuit contact phone jacks. Any teletypewriter patched to LPG jack with patch cords is connected in series in that particular channel, two or more LPG jacks are provided in each channel;
SET (set jacks) the jacks labeled SET incorporate a double-throw-double-pole switch; by inserting a DUMMY PLUG into the SET
jack, the teletypewriter originally in this channel is disconnected; by inserting a patch cord into the SET jack, the teletypewriter originally connected is removed from the circuit and can be patched to any other circuit by inserting the patch cord into the LPG jack of the desired circuit;
MISC (miscellaneous jack) these jacks are normally closed contact phone jacks identical to the LPG jacks; the MISC jacks are not wired to any particular circuit; teletypewriters not normally assigned to a converter or other terminal equipment are internally connected to the MISC jacks and are then available for patching to any circuit.

"NOTE: Anyone patching or unpatching circuits from a TTY panel must be sure to pull the plug from the looping jack (LPG) before removing the other plug from the SET (machine) jack. Pulling the SET jack first interrupts all TTY message traffic on that channel. IT ALSO PRODUCES A DANGEROUS DC VOLTAGE ON THE EXPOSED PLUG!"

*TT-23()/SG**	photo thanks to WA5CAB	6 channels 2 LPG, 1 SET, 1 MISC	includes a switch for each channel to select external or internal loop supply	Manual is NAVSHIPS 91480 (avail from www.wa5cab.com)
SB-1203/UG		6 channels 3 LPG, 1 SET, 1 MISC	Info on connections and use - thanks to Randy Guttery	SB-1203/UG is for black (unclassified) circuits,
SB-1210/UGQ		6 channels 2 LPG, 2 SET, 1 MISC		SB-1210/UGQ is for red (classified) circuits.
SB-2244/UG	need photo	12 channels
SB-3576/UG		24 channels 2 LPG, 2 SET, 1 MISC	includes fuses and alarm bell to indicate blown fuse