US Navy VHF & UHF Receivers - 1950's

VHF/UHF Receivers

AN/FRR-27
R-518/FRR-27
frr26-104.JPG (12988 bytes) VHF shore
(similar to FRR-26)
frr27-1221.jpg (171267 bytes)
100-156 mc
xtal control
frr27-1222.jpg (13980 bytes)
AN/URR-9 urr9-01.JPG (64020 bytes) UHF 225-400 mc AM

manual & 10 channel xtal control

similar to RDZ

double conversion superhet
18.6 & 3.85 mc IF

National

NAVSHIPS 91201

AN/URR-13
AN/URR-13A
AN/URR-13B
AN/URR-13C
R-266()/URR-13()
(formerly RED)
urr13-01.jpg (9821 bytes)
UHF 225-400 mc AM
1 xtal channel or tunable

urr13-02.jpg (13697 bytes)

urr13-xtal-01.jpg (122166 bytes)
Crystal pack for URR-13 & URR-35

single conversion superhet

Federal
Espey

NAVSHIPS 91270

AN/URR-21
AN/URR-21A
(R-432/URR-21)
urr21-01.JPG (95075 bytes)

urr21a-block-01.JPG (76805 bytes)

Replaced RCK

VHF 115-156 mc AM

manual or 4 channel xtal control

superhet - 12 mc IF

urr21-xtal-1300.jpg (69828 bytes)
Note erroneous label as transmitter

Air Associates Inc.

urr21-xtal-1301.jpg (101388 bytes)

NAVSHIPS 91497
NAVSHIPS 91642(A) - download

urr21-xtal-1302.jpg (125596 bytes)

urr21a-schem-01.JPG (303796 bytes) urr21a-schem-02.JPG (478732 bytes) urr21a-schem-03.JPG (381406 bytes) urr21a-ac-conn-01.JPG (269302 bytes)
AN/URR-27
AN/URR-27A
(R-516()/URR-27())
urr27a-111.jpg (23045 bytes)

urr27-02.jpg (146265 bytes)

VHF 105-190 mc AM
manual or 1 channel xtal control

urr27a-117.jpg (85153 bytes)

urr27a-116.jpg (14061 bytes)

urr27a-115.jpg (48099 bytes)

National URR-27
Clearfield URR-27A

NAVSHIPS 91771

info, schematic, & photos

urr27a-113.jpg (46772 bytes) urr27a-112.jpg (45087 bytes) urr27a-114.jpg (51049 bytes)
AN/URR-28(XN-1) urr28-03.JPG (156681 bytes)
info thanks to Ed KD6EU
urr28-02.JPG (218664 bytes) URR-35A redesign with 10 channels - probably not put into production

National

NAVSHIPS 92563

AN/URR-35
AN/URR-35A
AN/URR-35B
AN/URR-35C
AN/URR-35D
R-482()/URR-35()

urr35-01a.JPG (163422 bytes)
AN/URR-35A

urr35c-02.JPG (9122 bytes)
AN/URR-35C

urr35c-04.JPG (12166 bytes)  urr35c-03.JPG (14605 bytes)

UHF 225-400 mc AM
manual or 1 channel  xtal control

URR-35D spec sheet

dual conversion superhet
18.6mc & 1.775mc IF

Federal
National
Rauland-Borg
Western Electric

NAVSHIPS 91906 (35)
92022 (35A)
92676 (35C)

urr35-0211-1301.jpg (191504 bytes) urr35-0211-1302.jpg (178591 bytes) urr35-0211-1305.jpg (195708 bytes) urr35-0211-1307.jpg (312504 bytes)
urr35-0211-1308.jpg (339219 bytes) urr35-0211-1303.jpg (162695 bytes) urr35-0211-1304.jpg (187988 bytes) urr35-0211-1300.jpg (32290 bytes)

RCK

RCK Spec Sheets

rck-01.JPG (19799 bytes)

115-156mc, 4-channel crystal controlled

rck-02.JPG (21132 bytes)

rck-man-1900.jpg (77866 bytes) rck-man-1901.jpg (50998 bytes)

RDO
RDO Spec Sheets

RDO WW2 Operational Info

rdo-01.JPG (114592 bytes)

Manual NAVSHIPS 900,527

rdo-02.JPG (92593 bytes)

rdo-03.JPG (120751 bytes) rdo-04.JPG (51376 bytes)

RDZ (CNA-46275)

RDZ Spec Sheets

rdz-01.jpg (18521 bytes)

rdz-02.jpg (17308 bytes) 200-400 Mhz AM
10 crystal controlled channels

RDZ manuf - National
RDZ-1 manuf - Admiral

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rdz-0211-1300.jpg (79291 bytes) rdz-0211-1301.jpg (103835 bytes) rdz-0211-1302.jpg (65938 bytes) rdz-0211-1303.jpg (83664 bytes)

RDZ-1 (CQC-46275)
rdz-101.jpg (67736 bytes)

rdz-103.jpg (66838 bytes) rdz-104.jpg (106894 bytes) rdz-105.jpg (137507 bytes)
rdz-102.jpg (83293 bytes)

RDZ Power Supply Module
(CNA-20407)
rdz-ps-cna20407-01.JPG (25633 bytes)

rdz-ps-cna20407-02.JPG (28746 bytes) 200-400 Mhz AM
10 crystal controlled channels

RDZ manuf - National
RDZ-1 manuf - Admiral

RDZ Power Supply Module Info

rdz-ps-01.JPG (315658 bytes)

rdz-ps-02.JPG (400504 bytes) rdz-ps-03.JPG (492393 bytes) RDZ power supply parts list pdf