US Navy RTTY Equipment - FSK & AFSK Keyers

RTTY is also called RATT (Radio Teletype)


Early USN RTTY equipment - Click Here
           FSA, FSB, FSC transmitting frequency shift converters


KY-30/GRT ky30-grt-02.jpg (78313 bytes) ky30-grt-01.jpg (53270 bytes) FSK keyer

used with TBL and other?

 NAVSHIPS 91232

manuf Collins

KY-58/GRT & KY-75/SRT 
(
KY-58/GRT for shore stations, KY-75/SRT for shipboard)
ky58-grt-01.JPG (56912 bytes) ky75-srt-01.jpg (69157 bytes)
FSK keyers - replace oscillator in transmitter - used with TBL and other?

1.0-6.7 mc, 6 watts output

Components - 
md-165-02.jpg (47683 bytes)
MD-165/URT

am665-01.jpg (36347 bytes)
AM/665-URT

Spec Sheet

NAVSHIPS 91543

Manuf - National Radio

MX-1262/URT
(CBOT-23510)
FSK Coupling Adapter for TBL transmitter connects TBL to FSA, FSB, KY-30/GRT, KY-58/GRT, KY-75/SRT or similar keyer

section 1 couples xmtr master oscillator to FSK keyer.

section 2 couples FSK keyer output to xmtr's first IPA tubes 

NAVSHIPS 91885

manuf by American Electronic Laboratories Inc.

CYV-23510 FSK Coupling Adapter for TBK & TBM transmitters This is a small unit installed into a TBK (or TBM) transmitter to allow easy hookup of an external frequency shift keyer. Has two tuned RF transformers, one to couple the TBK osc to the 75 ohm FSK input, and the other to couple the 75 ohm FSK output to the TBK IPA. Controls are a common tuning knob for both transformers plus a switch to bypass the FSK. NAVSHIPS 900,206

manuf by Press Wireless

TH-39/UGT 
(TMC TIS-2)

tmc-TIS-3.2.jpg (112304 bytes)
photo thanks to Andy Moorer
AFSK keyer used with AN/URT-19, AN/URT-39, AN/URT-40, others

TTY signal in and AFSK output to transmitter

Spec Sheets

Manuals

Manuf - TMC

TH-39A/UGT
(
TMC TIS-3)
th39a-ugt-101.jpg (8803 bytes)

th39a-ugt-103.jpg (10416 bytes)

AFSK keyer used with AN/URT-19, AN/URT-39, AN/URT-40, others
th39a-ugt-102.jpg (30163 bytes)

TTY signal in and AFSK output to transmitter

Spec Sheets

Manuals

Manuf - TMC

TH-39B/UGT
(
TMC TIS-3)
th39b-ugt-101.jpg (8597 bytes)

th39b-ugt-103.jpg (10019 bytes)

AFSK keyer used with AN/URT-19, AN/URT-39, AN/URT-40, others
th39b-ugt-102.jpg (29060 bytes)

TTY signal in and AFSK output to transmitter

Spec Sheets

Manuals

Manuf - TMC

- Guam - patch panel Guam - TH-39's in rack 15 on far right - AN/FCC-3 multiplexer units in rack 14. - -