US Navy LF & VLF Receivers - 1950's

LF & VLF Receivers
model photo primary use specs info
 

AN/BRR-3

AN_BRR-3 faceplate.jpg (82545 bytes)

AN_BRR-3_faceplate2.JPG (66073 bytes)

brr3-65.jpg (17439 bytes)

VLF - submarine  - CW & FSK

built-in FSK converter and scope.

brr3-104.JPG (198737 bytes)

14-30 kc CW & FSK
60, 20, 170 cps bandwidth
0.2 uv sensitivity for 0 error FSK
0.02uv sensitivity for CW

brr3-sys-01.JPG (71293 bytes)

 brr3-62.jpg (25767 bytes)

Manuf by ITT Federal

NAVSHIPS 93716

Manual available from Vintage Manuals  
brr3-64.jpg (21676 bytes) brr3-63.jpg (23134 bytes) brr3-66.jpg (16714 bytes) brr3-67.jpg (14893 bytes)
brr3-spec-01.JPG (198154 bytes) brr3-spec-02.JPG (197788 bytes) brr3-spec-03.JPG (147085 bytes) brr3-spec-04.JPG (65798 bytes)
AN/BRR-3(XN-1) brr3-xn1-01.JPG (148157 bytes) 14-30 kc CW & FSK
built-in FSK converter and scope.

Prototype Only

 Manuf Collins NAVSHIPS 93385
AN/BRR-3(XN-2) brr3-xn2-01.JPG (362164 bytes) 14-30 kc CW & FSK
built-in FSK converter and scope.

Prototype Only

 Manuf ITT NAVSHIPS 93439
AN/BRR-4(XN-1) brr4-01.JPG (131296 bytes) 14-30 kc CW & FSK
built-in FSK converter and scope.

Transistorized equiv. of BRR-3

Prototype Only

 Manuf Hoffman NAVSHIPS 93810
AN/FRR-18 similar to AN/FRR-21 VLF/LF shore fixed frequency
similar to FRR-21		 tunable or crystal-controlled
4 crystal-controlled channels
14-600 kc

xtal control, 28 tubes

Manuf RCA

 info
AN/FRR-21 frr21-01.jpg (41571 bytes)
FRR-21 with standby switch

srr21-07.JPG (165384 bytes)
FRR-21 with no standby switch

 VLF/LF shore
version of SRR-11
w/ rack mount

frr21-06.JPG (163334 bytes)
FRR-21 with no standby switch

 14-600 kc

28 tubes

Manuf RCA

 NAVSHIPS 92211

info/photos

manual

AN/FRR-30
(R-519/FRR-30)		 similar to AN/FRR-26 LF shore single frequency
(similar to FRR-26)		 not tunable - xtal control only
200-500 kc		 NAVSHIPS 92679
AN/MRR-1 similar to MRR-2 - need photo VLF/LF for mobile or transportable use
AN/SRR-11 with waterproof case		 14-600 kc
Manuf RCA 		   --
AN/SRR-11
AN/SRR-11A		 srr11-01.jpg (119932 bytes)

srr11-09.JPG (171386 bytes)
SRR-11

 VLF/LF shipboard
version of FRR-21

srr11a-11.JPG (150029 bytes)
SRR-11A

 14-600 kc

28 tubes

Manuf RCA
Manuf Magnavox?

 info/photos

manual

Navships 91875, 92182

AN/SRR-19 srr19-01.jpg (83282 bytes)
thanks to this site		 LF shipboard 30-300 kc 

30 nuvistors

Manuf National

 More photos
AN/WRR-3
(R-1134/WRR-3)

AN/WRR-3A
(R-1134A/WRR-3A)

AN/WRR-3B
(R-1134B/WRR-3B)

 

 

 

 

  		WRR-3
wrr3-01.JPG (78061 bytes)		 VLF/LF ship/sub
14-600 kc
wrr3-02.JPG (105135 bytes)

wrr3-03.JPG (91806 bytes)

 NAVSHIPS 0967-035-1010

download here thanks to W6GER 
WRR-3B wrr3b-01.jpg (55019 bytes) wrr3-101.jpg (32299 bytes) wrr3-106.jpg (26647 bytes) Manuf Magnavox (WRR-3)
Manuf Capehart (WRR-3A)
Manuf Bendix (WRR-3B)
R-389/URR

 

 

 

 

 

 

 

r389-111.jpg (109218 bytes) VLF/LF used shipboard & ashore
15-1500 kc

Signal Corps acquisition but used by USN

Manuf Collins

 

 r389-112.jpg (112358 bytes)
r389-116.jpg (118938 bytes) r389-114.jpg (175998 bytes) r389-115.jpg (177929 bytes)
R-1655/URR r1655-01.jpg (45360 bytes) Mostly used by SECGRU I think
r1655-04.jpg (52230 bytes)		 r1655-05.jpg (52345 bytes) TM 11-855

See W5OR's web site with tons of photos and info