HF/MF Receivers
AN/FRR-22
w/ rack mount + EXT OSC input
FRR-22 with AGC off-norm
FRR-22 showing AGC off-norm instead of standby switch
NAVSHIPS 92211
info/photosAN/FRR-23
w/ rack mount + EXT OSC input
29 tubes
NAVSHIPS 92211
info/photosAN/FRR-48(XW-1)
HF DSB/SSB Receiver 2-32 mcPrototype Only
General Electric model XSDR-1
Synthesized, synchronous detection, direct conversion
See this paper for much more info
And this
article for a history of the development
Bill Jones, Dr. John Costas, Roger Swanson, Jack Cunnif
Bottom of RF chassis by Bill Jones
Top of RF chassis by Bill Jones
Top of Synthesizer by Roger Swanson
Bottom of Audio, Alpha-Beta and Audio by Jack Cunnif
AN/FRR-59
AN/FRR-59A
AN/FRR-59B
AM-2477/URR amplifier - detector
CV-920/URR converter - RF tuner
1.0 kc tuning (59)
0.5 kc tuning (59A,B)
Wadley loop - 65 tubes
Arvin (59B) diagram
AN/MRR-2
AN/SRR-12 with waterproof case
115vac or 24vdc
AN/MRR-3
need photo - looks like MRR-2
AN/SRR-13 with waterproof case
AN/SRR-12
29 tubes
Navships 91875
AN/SRR-13
AN/SRR-13A
(R-441/SRR-13)
SRR-13
SRR-13
2-32 mc, 29 tubes
SRR-13A with AGC off-norm switch
SRR-13A with standby switch
SRR-13A showing AGC off-norm instead of standby switch
Navships 91875 - manual pdf
article in Electric Radio magazine
- July 1991 p 4
SRR-13A
AN/TRR-5
R-366/TRR-5
LS-171/U
CY-851/TRR-5
AN/WRR-2
AN/WRR-2A
AN/WRR-2B
upper - AM-2477/URR amplifier - detector
lower - CV-920/URR converter - RF tuner
See FRR-59 block diagrams above
1.0 kc tuning (2)
0.5 kc tuning (2A,B)
Wadley loop
65
tubes
Arvin (2B) diagram
AN/URR-22
(R-302/URR-22)
need better photo
replaces RBO
similar to AN/URR-44
AN/URR-23
R-381A/URR-23 (Collins 51J-2)
CY-1235/URR cabinet
LS-175/U speaker
Contract NObsr-49134
(15 May 1950)
AN/URR-23A
R-388/URR (Collins 51J-3 variant)
CY-1235/URR cabinet
LS-199/U speaker
photo courtesy of K4NCG
Collins 51J-3 with MFP and modified antenna input ckt ?
Were all Navy R-388 receivers procured as AN/URR-23A systems?
Click here for R-388 contract info page
R-388 tag showing AN/URR-23A Navy contract number - thanks to W7HDL
(22 June 1951)
NAVSHIPS 91678
AN/URR-36
need photo
with 4 coils (A-D), & speaker
AN/URR-36A
need photo
(R-5234/URR-36A)
with 10 coils, xtal calib, speaker & coil storage unit, and rack
Contract
NObsr-71193
NAVSHIPS 91648
AN/URR-39
(R-651/URR-39
with speaker (LS-228/U)
& rack mount (MT-1529/U)
50-150kc & 0.54-31mc
standard 47-55mc band replaced with VLF band and bandspread replaced
with 0-200 logging scale
AN/URR-44
(R-892/URR-44)
replaces RBO
NAVSHIPS 93316
similar to URR-22
AN/URR-51 ?
need photo
AN/URR-74(V)
This is similar WJ-8716
Need AN/URR-74 photo
5kc-30mc
AM FM CW LSB USB ISB
0.3, 1, 3.2, 6, 16 kc bandwidths
AM (16 or 6 khz), SSB (3.2 khz), RTTY (1 khz) or CW (.3 khz). There is a mechanical BFO built in that can be adjusted in 10 hz increments using decadic thumbwheels The digital readout is clear and bright and goes to a resolution of 10 hz for precise tuning.
Coverage of 5 khz to 30000 khz
Selectivity of 16 / 6 / 3.2 / 1 / .3 khz
BFO of + or - 8 khz and shown in it's own display to the left of the frequency readout
4 Tuning steps
AGC fast / slow / off
Modes of AM / FM / CW / LSB / USB / ISB
AF/S-Meter
115/220 VAC
Digital readout down to 10 hz
Sensitivity of .4uV 16 dB (S+N)/N CW
IF output
RF gain
Headphone and line out jacks
Rack handles
R-274B/FRR
(Hammarlund SP-600-JX-6 or SP-600-J-11 or SP-600-JX-35)
R-274B/FRR "special"
(Hammarlund SP-600-JL-24)
need photo
SP-600-JL-24
NAVSHIPS 91661
SP-600 series info(part of AN/FRC-10A or -10B)
4-28 mc dual channel SSB
- for VF AFSK links
Manual TM 11-780
download pdf version
R-388/URR
photo thanks to Don Smith
Collins 51J-3
Were all Navy R-388 receivers procured as AN/URR-23A systems?
What's this goofy contract number mean? MIPR 881-47159
Please send e-mail if you can help clarify this - thanks!
Contract
MIPR-881-47159
TM11-854 / TO16-35R-388-5
R-388A/URR
need photo
NAVSEA manual
Were any 51J-4's actually labeled as R-388A?
Contract NObsr-69046
(16 Nov. 1956)
NAVSHIPS 92324
R-390/URR
R-390A/URR
Many Navy R-390A units were modified with a green diode load jack on
the front panel (FC 4)
Rear panel cover with AN connectors
NAVSHIPS Manual & Field Changes
R-450/FRR-28
article in Electric Radio magazine
- Sept 2004, p2
R-618/FRR-32
Need better photo
R-825/URR
540 kc - 31 mc
R-840/URR
need better photo
(same as R-825 plus xtal control)
Contract NObsr-71790
540kc-31mc
More photos
manual - NAVSHIPS 93165
R-1051/URR
R-1051A/URR
R-1051B/URR
R-1051C/URR
R-1051D/URR
R-1051E/URR
R-1051F/URR
R-1051G/URR
R-1051H/URR
late 60's replacement for most receivers
article in Electric Radio magazine November 1993 p4
R-1414/URR
photo thanks to K1VVC
Manual available from www.manualman.com
R-2174/URR
R-2307/U
(Cubic R-3030A)
- Twin receivers
- 50 kc to 30 mc range
- IF outputs of 40.455 mc and 455 kc
- Highly stable with + or - 1 PPM
- BFO of + or - 10 kc
- 100 memory channels per receiver
- Bandwidths of .5 / 2 / 4 / 8 / 16 kc
- Operating modes of AM / USB / LSB / CW / FM
- Tuning resolution to 10 cps
- IF passband shift from .1 to +/ - 9.99 kc
R-2368/URR
LF/MF/HF solid state
R-2557/URC
75A-4
75A-4 (Mod)
1.5 to 2.5 mc
3.2 to 4.2 mc
6.8 to 7.8 mc
14 to 15 mc
20.8 to 21.8 mc
26.5 to 27.5 mc
28 to 29 mc
29 to 30 mc
75A-4 (Mod) - bands
1.5 to 2.5 mc
3.2 to 4.2 mc
4.2 to 5.2 mc
5.2 to 6.2 mc
6.8 to 7.8 mc
13 to 14 mc
14 to 15 mc
29 to 30 mc
- used by USN in early SSB tests
- other uses??
contracts:
75A-4 NObsr-71287, 27 April 1956
75A-4 (Mod) NObsr-71289, 27 April 1956