US Navy RTTY Equipment - Terminal Units
(Combined Keyer + Converter)

RTTY is also called RATT (Radio Teletype)

This page is for RTTY converters, keyers, patch panels, etc.
Go to Navy Teletype Page for actual TTY equipment

AN/SGC-1, AN/SGC-1A

(TT-40/SGC-1, TT-40A/SGC-1A)

 

 sgc-1-01.jpg (15563 bytes)
AN/SGC-1

sgc1a-101.jpg (27458 bytes)
AN/SGC-1A

 Early AFSK Terminal Unit (demod and keyer) primarily used shipboard for UHF RTTY links.  200 cps shift (700cps mark, 500 cps space). Can be readily converted to other shift freq.  Manuals are NAVSHIPS 91503 (SGC-1) and NAVSHIPS 91152 (SGC-1A)

See CQ magazine April 1970, page 82, for info (avail at http://hamcall.net/cq)

manuf - Remler
CV-2460/SGC cv2460sgc-01.jpg (18909 bytes) AFSK Terminal Unit
(demod and keyer)		   manuf - Stelma

 

        

 SGC-1 has 2 connectors on chassis with cables running to a terminal strip in the case:

 CONNECTOR   TERMINAL
 STRIP   		  SIGNAL     COLOR             CONNECTOR   TERMINAL
 STRIP   		  SIGNAL     COLOR
 J108 (7 pin)                J107 (8 pin)         
 A     5     AF IN     BLK  A     7     TTY     BLK
 B     6     AF IN     YEL  B     8     TTY     YEL
 C     3     AF OUT     BLK  C     2     115vac     RED
 D     4     AF OUT     RED  D     1     115vac     GRN
 E      9     ???     YEL  E      12     ground     RED (control?)
 F     10     ???     BLK  F     11     control?     BLK
 G     -     -     -  G     case     ground     WH/BLK
               H     -     -    -

List of 61 military surplus RTTY units

Includes brief descriptions.
See CQ magazine September 1972, page 83 (avail at http://hamcall.net/cq)

Greenkeys

This is a great email list for TTY and RTTY information
http://mailman.qth.net/mailman/listinfo/greenkeys
Check out the greenkeys archives

Navy RTTY Links - more interesting info and photos

More RTTY links

Communication equipment manuals and descriptions

TTY manuals