Navy Audio Tape Recorder - Reproducer Equipment

AN/TNH-21, AN/TNH-21A, AN/TNH-21B, AN/TH-21C
4 channel, 5 speed Audio Recorder-Reproducer

Used in intercept stations, maybe elsewhere - See photos and info towards the bottom of this page on CFS Alert

1972 - TNH-21 originally manufactured by Mincom Division of 3M (model M67)
Later models manufactured by Video Research Corporation, Riviera Beach, FL
Manual - AN/TNH-21 manual, National Security Agency - DOWNLOAD MANUAL (39 MB PDF)
15 ips, 200cps-64kc        7-1/2 ips 200cps-32kc      3-3/4 ips 200cps-16kc   1-7/8 ips 200cps-8kc     15/16ips 200cps-4kc

 TNH-21 in NSGR training center
nsgr-training-01.jpg (845487 bytes) 		TNH-21 in NSGR training center
nsgr-training-02.jpg (573592 bytes)
tnh21-1104.JPG (208014 bytes) tnh21-1103.JPG (31361 bytes) tnh21-1101.JPG (48108 bytes) tnh21-1102.JPG (50186 bytes)
tnh21-21.JPG (73794 bytes)
rear panel - 4 inputs, 4 outputs
"audio transfer" & remote connector

tnh21-25.JPG (170326 bytes)
rear view with motor control board folded down

 tnh21-22.JPG (132887 bytes)
top view,  front panel to left-
Capstan motor in center
Take-up reel motor at bottom		 tnh21-23.JPG (150596 bytes)
top view, front panel to left-
Supply reel motor at top,
Idler flywheel in middle
Capstan motor at bottom		 tnh21-24.JPG (119447 bytes)
right side view, front panel to left - 
Take-up reel motor at top
Capstan motor in center
Capstan shaft/tachometer at bottom
tnh21-26.JPG (171099 bytes)
left side view, front panel to right -
Supply reel motor at top,
Capstan shaft/tachometer in middle background
Idler flywheel below in foreground		 tnh21-27.JPG (84169 bytes)
Left side view, front panel to right -
Capstan motor above and belt to Capstan shaft/tachometer below		 tnh21-28.JPG (124790 bytes)
Left side view, front panel to right -
Idler flywheel in foreground
Capstan shaft/tachometer behind		  

-
tnh21-111.JPG (189284 bytes)
Opened up for repair - front and rear halves separated		 tnh21-112.JPG (151952 bytes)
Opened up for repair - front and rear halves separated		 tnh21-113.JPG (178652 bytes)
Four audio channel boards		 tnh21-114.JPG (184130 bytes)
Upper - motion control board
Lower - audio monitor/control board

Other audio recorders

AFSAV-75A (AN/TNH-11)
tape-afsav75a-01.jpg (1775148 bytes)

 AFSAV-75A (AN/TNH-11)
2 track record/reproduce (1/4" tape)
3.75 ips
(150-5000 cps bandwidth)
 tnh11-2301-01.jpg (176419 bytes) tnh11-2301-02.jpg (289603 bytes)
tnh11-2301-03.jpg (222644 bytes) tnh11-2301-04.jpg (260053 bytes) tnh11-2301-05.jpg (196989 bytes) tnh11-2301-06.jpg (246496 bytes)
tnh11-2301-07.jpg (128896 bytes) tnh11-2301-09.jpg (151134 bytes) tnh11-2301-10.jpg (212186 bytes) tnh11-2301-12.jpg (251594 bytes)
tnh11-2301-13.jpg (101618 bytes) tnh11-2301-15.jpg (180221 bytes) tnh11-2301-17.jpg (273464 bytes) ==
tnh11-2301-18.jpg (162451 bytes) tnh11-2301-20.jpg (203624 bytes) tnh11-2301-21.jpg (167079 bytes) tnh11-2301-22.jpg (210328 bytes)
tnh11-2301-23.jpg (112708 bytes) tnh11-2301-26.jpg (161776 bytes) tnh11-2301-28.jpg (217077 bytes) tnh11-2301-27.jpg (268089 bytes)

AFSAV-510
MINCOM CM-100 
tape-afsav510-01.jpg (2385087 bytes)

 AFSAV-510
2 track record/reproduce (1/4" tape)
3.75 ips to 30 ips
(100cps-50kc bandwidth at 30 ips)

MINCOM CM-100
7 track record reproduce (1/2" tape)
14 track record/reproduce (1" tape)
7.5 ips to 120 ips
(400cps-1mc bandwidth at 120 ips)

 == ==

AN/UNQ-7
unq7-01.JPG (948265 bytes)

 Typically used to record sonar on one channel and voice comments on the other. UNQ-7, has 3-3/4 and 7-1/2 ips speeds. Later models also include 15 ips.

AN/UNQ-7A manual

AN/UNQ-7B - need info

AN/UNQ-7C - specs

 

 UNQ-7D and UNQ-7E operating instructions

RD-259/UNQ-7D tape deck
unq7d-01.jpg (882145 bytes)

 C-4957/UNQ-7D remote control
unq7d-02.jpg (1096952 bytes)
unq7d-1848.JPG (2656317 bytes) CY-6094/UNQ-7D cabinet
unq7d-1851.JPG (5198575 bytes)		 AN/UNQ-7D connections info
unq7d-1856.JPG (5574202 bytes)		 ==
AN/UNQ-7E dual tape decks
unq7e-01.jpg (2128974 bytes) 		AN/UNQ-7E remote control
unq7e-02.jpg (888378 bytes)		 UNQ-7D and UNQ-7E operating instructions ==

AN/UNQ-8

 7 track recorder intended as replacement for UNQ-7 Specs ==

RD-115C/UN
rd115c-un-02.jpg (972224 bytes)

 uses 3" wide tape to record 24 hours of 2-channel voice signals - used to record air-ground and ship-shore comms

rd115c-un-01.jpg (1328628 bytes)

 Freq. response - 400 Hz to 3800 Hz 
Recording time - 24.25 hours on 1136' reel of tape
Speed - 9.28 in/min 

rd115c-un-03.jpg (903862 bytes)

 rd115c-un-04.jpg (896062 bytes)
rd115c-33.jpg (23710 bytes) rd115c-34.jpg (25573 bytes) rd115c-35.jpg (28693 bytes) -

MX-1373/UN
mx1373-un-01.jpg (73283 bytes)

 tape demagnetizer for RD-115/UN
mx1373-un-02.jpg (74191 bytes)		 mx1373-un-03.jpg (82694 bytes) -

RD-119C/UN
Similar to RD-115/UN
rd119-1811-01.jpg (53814 bytes)

 rd119-1811-02.jpg (43779 bytes) rd119-1811-03.jpg (60955 bytes) rd119-1811-04.jpg (49696 bytes)
rd119-1811-05.jpg (59115 bytes) rd119-1811-06.jpg (58902 bytes) rd119-1811-07.jpg (35822 bytes) rd119-1811-08.jpg (38688 bytes)
rd119-1811-09.jpg (64581 bytes) rd119-1811-10.jpg (66387 bytes) == ==

RD-173B/UN
General purpose audio recorder

 rd173b-1404-01.jpg (226595 bytes) rd173b-1404-02.jpg (277744 bytes) ==

RD-365/UN
General purpose 1-track audio recorder

for training & entertainment purposes - 7-1/2 and 3-3/4 ips

 rd365-un-01.jpg (22655 bytes) rd365-un-02.jpg (16138 bytes) -