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


C-2749/URT

tmc-xfk-01.jpg (16062 bytes)

FSK keyer - used with URT-19, 
tmc-xfk-02.jpg (20100 bytes)
c2749a-urt-1105-03.jpg (56852 bytes) TMC model XFK

manual & spec sheets thanks to K4OZY

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xfk-120301.JPG (35941 bytes) xfk-120303.JPG (61654 bytes) xfk-120304.JPG (75563 bytes) xfk-120305.JPG (56998 bytes)

KY-30/GRT

ky30-grt-02.jpg (78313 bytes)

 

ky30-grt-01.jpg (53270 bytes)

ky30-grt-spec-01.JPG (179264 bytes) FSK keyer

Same as Collins 709B-1

Operation & Circuit Info Page

NAVSHIPS 91232

KY-32/GRT

ky32-grt-01.JPG (622878 bytes) FSK adapter for TCK transmitter

Please let me know if you have a NAVSHIPS 91109 manual

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KY-43A/URT
KY-43B/URT

 

Adds FSK to TAB-5, -6, -7

 

KY-43A for polar TTY signals
KY-43B for polar or neutral TTY signals
NAVSHIPS 91645
NAVSHIPS 0967-997-5010
Fidelity Amplifier Co.

KY-45/FRT-5

frequency shift keyer
used in FRT-5, FRT-6, etc.

ky45-101.JPG (307505 bytes)

-  NAVSHIPS 92346

KY-45 pages from FRT-5A manual

KY-58/GRT & KY-75/SRT 
ky58-grt-01.JPG (56912 bytes)

(KY-58/GRT for shore stations, KY-75/SRT for shipboard)

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

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

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

ky75-dia-1103-01.JPG (289177 bytes)

Spec Sheet

NAVSHIPS 91543

Manuf - National Radio

 

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

 

Guam - TH-39's in rack 15 on far right 
Guam - patch panel

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)

AFSK keyer used with AN/URT-19, AN/URT-39, AN/URT-40, others

th39a-ugt-103.jpg (10416 bytes)


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)

AFSK keyer used with AN/URT-19, AN/URT-39, AN/URT-40, others

th39b-ugt-103.jpg (10019 bytes)

th39b-ugt-102.jpg (29060 bytes)

TTY signal in and AFSK output to transmitter

Spec Sheets

Manuals

Manuf - TMC

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

 

keyer-23510-1411-01.jpg (91525 bytes) keyer-23510-1411-02.jpg (139792 bytes) keyer-23510-1411-03.jpg (175760 bytes) keyer-23510-1411-04.jpg (125612 bytes)

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

keyer-23510-1304-01.JPG (1295478 bytes)


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keyer-23510-1304-04.JPG (603669 bytes)

keyer-23510-1304-03.JPG (612443 bytes)

keyer-23510-1304-05.JPG (563315 bytes)

Installed in TBK-18
keyer-tbk-01.JPG (2186918 bytes)