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

RTTY is also called RATT (Radio Teletype)

Main Vintage Navy Radio Page
Back to main Navy RTTY page
- Navy RTTY transmitting keyer page
- Navy RTTY receiving converter page
This page is for RTTY converters, keyers, patch panels, etc.
Please go to Navy Teletype Page for actual TTY equipment
Please send me e-mail if you have more info or links for me to add
thanks, Nick K4NYW
Go here for TELETYPE SIGNAL, FSK, and AFSK EQUIPMENT MANUALS

AN/URA-17E diversity system is composed of two CV-3510A/UG AN/URA-17F diversity system is composed of two CV-3510B/UG AN/URA-17G diversity system is composed of two CV-3510C/UG Note: AN/URA-17, -17A, -17B, -17C, -17D are receiving converter systems only, using CV-483/URA-17
AN/SGC-1, AN/SGC-1A (TT-40/SGC-1, TT-40A/SGC-1) AN/SGC-1 AN/SGC-1 modified for ham use	AN/SGC-1A (modified from -1?) Later AN/SGC-1A	Early AFSK Terminal Unit (demod and keyer) primarily used shipboard for UHF RTTY links. detailed circuit description and schematic See connection info below	200 cps shift (700cps mark, 500 cps space). Can be readily converted to other shift freq. NAVSHIPS 91152 (SGC-1) NAVSHIPS 91503 (SGC-1A) - available from WA5CAB See CQ magazine April 1970, page 82, for info (avail at http://hamcall.net/cq) manuf - Remler
CV-2460/SGC	AFSK Terminal Unit (converter and keyer) A = 500Hz space / 700Hz mark (UHF) B = 1575Hz space / 2425Hz mark (HF) Note: these are reverse polarity to CV-3510 below	-	manuf - Stelma manual NAVELEX EE162-AB-MMO-010/E110 Operating info (630kb pdf)
CV-3510/UG Signal Data Converter	I really need the manual - TM 11-5895-1370-12-3 Looks like it can operate on 220 or 110vac (400Hz), or 28vdc	Not clear what these connectors usually go to.	Looks like a portable test unit, but appears to be an actual TU.
	Converter	Loop supply	Loop supply with 28vdc to 120vdc converter
	The connectors shown on the left come from the case lid and plug into the Converter's receptacles shown above. They route these signals to the external connectors shown on the right. The unit can then be used while sealed up.
Loop supply with 28vdc to 115vdc converter	Converter front panel removed	Rear of front panel - shielded I/O connectors	28vdc to 115vac 400 Hz converter at right.
Why these wires???	Four stacked circuit boards	Fuses and Voltage Selector	Circuitry bolted to heat sink at bottom
CV-3510A/UG (part of AN/URA-17E) AN/URA-17E diversity system comprises two CV-3510A	AFSK Terminal Unit (converter and keyer) VLF= 1000 Hz mark / 1050Hz space LF= 915Hz mark / 1085Hz space HF= 1575Hz mark / 2425Hz space UHF= 500Hz mark / 700Hz space MMM= 1615Hz mark / 1785Hz space	AN/URA-17E aboard BB-61	Manuf Gould Navcom Manual is EE162-AH-OMI-010/E110 URA17E - manual URA-17E specs URA-17E connections
CV-3510B/UG (part of AN/URA-17F)	AFSK Terminal Unit (converter and keyer) VLF= 1000 Hz mark / 1050Hz space LF= 915Hz mark / 1085Hz space HF= 1575Hz mark / 2425Hz space UHF= 500Hz mark / 700Hz space MMM= 1615Hz mark / 1785Hz space	AN/URA-17F diversity system comprises two CV-3510B	LED tuning indicator manual NAVSHIPS 0967-LP-340-0010 Technical Manual for Comparator- Converter Group AN/URA-17F Operating info (630kb pdf)

	Input switch - Left - high level neutral (60ma loop) Mid - high level polar (20 ma loop) Right - low level polar (+/-6v)		Toggle switch Left - Secure/sync mode Rocker switches Left - "back-to-back" mode
CV-3510C/UG (part of AN/URA-17G)		Appears similar to CV-3510B LED indicator bars Please send e-mail if you have a manual that I can buy or borrow to scan	AN/URA-17G diversity system comprises two CV-3510C
CV-3883/UG (Dovetron MPC-1000CR/T) TEMPEST	Manual Info on freq shifts
MD-1061(V)/USC Digital Modem
TH-20/UG			Manuf H.O. Boehme Type 6-C NAVSHIPS 92484 manual pdf

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	-	-	-

AN/AGA-1 Airborne Audio TU system

2275 cps Space, 2475 cps Mark Audio FSK adapter -
"used in conjunction with any voice-modulated
transmitter and receiver"

Includes

TT-30/AGA-1 Teletypewriter
(Teletype Model 31)
TT-31/AGA-1 Terminal Unit

Please send me e-mail if you have a photo, manual,
more info, etc. on the TT-31/AGA-1

TT-30/AGA-1 manual is here

TT-30-1.jpg (65576 bytes)

TT-30-2.jpg (47289 bytes)

aga1-spec.JPG (1385349 bytes)

Main Vintage Navy Radio Page
Back to main Navy RTTY page
Please send me e-mail if you have more info or links for me to add
thanks, Nick K4NYW
Last updated 07/31/2023