AN/FRA-49(V)
multicoupler
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need better photo |
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10 KW HF multicoupler
Shore Stations
see NRL development page for
info
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AN/SRA-13
AN/SRA-14
AN/SRA-15
multicouplers
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four 500 watt inputs to one antenna
xmtrs must be 10% diff in freq.
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AN/SRA-13 - 2 to 6 mc
AN/SRA-14 - 4 to 12 mc
AN/SRA-15 - 6 to 18 mc
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CU-421B/SRA-15 coupler
see NRL development page for
info
SRA-13/14/15 NAVSHIPS 92746
Manuals available from Fair
Radio Sales
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CU-419B/SRA-13 |
CU-419B/SRA-13
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CU-419B/SRA-13 |
CU-419B/SRA-13 |
CU-419B/SRA-13
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CU-419B/SRA-13 |
CU-421/SRA-15 |
CU-421/SRA-15 - busted vacuum cap
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CU-421/SRA-15 - busted vacuum cap |
CU-421/SRA-15 |
CU-421/SRA-15
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CU-421/SRA-15 |
AN/SRA-16
multicoupler
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four 500 watt inputs to one antenna
xmtrs must be 10% diff in freq.
9 to 26 mc
see NRL development page for
info
manual NAVSHIPS 92839
Manuals available from Fair
Radio Sales |
AN/SRA-18
AN/SRA-18A
antenna tuner
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0.3-30 Mc 500w max system for use with AN/URT-2 series (autotune), AN/SRT-14 series, TBK, and other transmitters
(manual tune)
- C-1360/SRT Control Monitor Unit
- CU-402/SRT Transmitter Coupler (impedance transformer)
- CU-372/SRT Antenna Coupler Unit (fixed L, C)
- TN-229/SRT RF Tuner (tunable L)
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C-1360/SRT Control Monitor Unit
SRA-18 NAVSHIPS 92540
SRA-18A NAVSHIPS 93193
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AN/SRA-20
antenna coupler
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Developed for use with 4-channel RCA SSB-1 transceiver - see
detailed SRA-20 info on SSB-1 page
manual NAVSHIPS 93202
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C-2372/SRT controller
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TN-329/SRT tuner
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AN/SRA-22
antenna coupler
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CU-714/SRA-22 antenna coupler +
C-2698/SRA-22 coupler control
or C-2494/SRA-22 coupler control
manuf Collins 180R-6
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Notes on
Operation - PDF
Operation With 35' Whip - PDF
NAVSHIPS 93286
NAVSHIPS 0967-136-6010
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AN/SRA-23
multicoupler
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Antenna multicoupler AN /SRA-23
consists of three couplers and associated control and blower units. The
couplers cover the frequency range 2 to 27 mc in three frequency bands.
Each coupler operates in a different band. These bands are 2 to 6 mc, 5 to
15 mc, and 9 to 27 mc. The coupler group was developed for use with
500-watt transmitters, but, with minor adjustments. it is capable of
handling transmitters with 1000-watt outputs.
One coupler group accommodates only one transmitter.
Provisions are made, however, for connecting up to eight of these groups
together to form a multicoupler system. This arrangement permits the
simultaneous operation of eight transmitters into a single broadband
antenna.
Manual NAVSHIPS 93196
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AN/SRA-25
antenna coupler
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4-channel HF tuner developed for use with
Eldico S-100 transceiver? Appears similar to AN/SRA-20
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Please send e-mail if you have
any info
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AN/SRA-33
UHF antenna multicoupler
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4 couplers, 225-400 MHz, 140 watts
uses C-4586/SRA-33 control/power supply
The AN/SRA-33 is designed for
operation with shipboard radio
set AN/WSC-3.
units and manuals are available from Fair
Radio Sales
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The AN/SRA-33 consists
of four antenna couplers (CU-1131/SRA-33
through CU-1134/SRA-33), a control power supply
C-4586/SRA-33, an electronic equipment
cabinet CY-3852/SRA-33, and a set of special-purpose
cables.
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AN/SRA-35
AN/SRA-36
AN/SRA-37
Multicoupler
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need photos |
10 KW HF multicouplers
for Communications Ships
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see NRL development page
for info |
AN/SRA-56
AN/SRA-57
AN/SRA-58
Multicoupler
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1kw (2kw PEP) per input
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components -
AN/SRA-56 (2-6mc)
four CU-1772/SRA-56 coupler units
PP-4993/SRA power supply
CV-6422/SRA-56 cabinet
CU-1773/SRA-56 matching network
(to add four more coupler units)
AN/SRA-57 (4-12mc)
four CU-1774/SRA-57 coupler units
PP-4993/SRA power supply
CV-6422/SRA-57 cabinet
CU-1773/SRA-57 matching network
(to add four more coupler units)
AN/SRA-58 (10-30mc)
four CU-1776/SRA-58 coupler units
PP-4993/SRA power supply
CV-6422/SRA-58 cabinet
Specification
document
Manuals available from Fair Radio
Sales
need more info!! - see also tuner section of Shipboard
Equipment Manual |
AN/URA-27
(50 ohm)
Antenna Coupler
AN/URA-34
(70 ohm)
Antenna Coupler
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tuner photos thanks to WA5AVK |
Antenna tuner 2-30mc, 1kw
CU-772/URA-27 tuner
CU-773/URA-27 directional coupler
C-2995/URA-27 control monitor
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manuf TMC model ATS-50-2 (50 ohm)
manuf TMC model ATS-70-2 (70 ohm)
manual
thanks to K4OZY
spec sheets
thanks to K4OZY
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AN/URA-38
Antenna Coupler
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HF coupler used with AN/URT-23
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CU-402/SRT Transmitter Coupler
(for AN/SRA-18 tuner system and AN/SRT-14 series transmitters)
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CU-402/SRT
is an antenna current meter plus impedance matching auto-transformer - it
was mounted below-decks near the transmitter and then low-loss coax ran
from it up on deck to a motor-driven variable inductor and remotely
switched capacitors which were used to tune the antenna (35' whip or
60-100' long wire). It is rated for 200w for 0.3-2.0 mc and 500w for
2.0-30.0 mc
The CU-402
would step-up or step-down the output impedance of the transmitter (which
varied with frequency) to match the 50 ohm coax load, but the extra L
& C units were needed to tune out the reactance of the antenna.
The CU-402
also has a directional coupler that ran back to a metering circuit
located in the SRT-14 transmitter (via the 3-pin connector).
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CU-691/U & CU-692/U
UHF multicouplers
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225-400mc
CU-691/U handles four sets
CU-692/U handles two sets
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CU-731/SRT & CU-732/SRT
Bandpass filters
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CU-837/URC
Matching Network
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network matching switch
50 ohm output for TCS
(use with AN/SRA-22 coupler)
2-3 mc
3-5 mc
5-7 mc
7-12 mc
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CU-937/UR
Antenna Tuner
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More photos |
CU-2184/URC-94
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Harris RF-281
Used with URC-35, WRC-1, etc.
Manual download |
TN-197/URT
antenna tuner for URT-2 series transmitters
System components:
OA-297/URT controller group
CB-5/URT capacitor tuning unit
TN-197/URT inductor tuning unit
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TN-197/URT inductor tuning unit |
motor/control end
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tuning coil end |
TN-229/SRT
antenna tuner for SRA-18 system and SRT-14 series transmitters
System components
TN-229/SRT antenna tuner
CU-372/SRT antenna coupler
CU-402/SRT load adjusting unit
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need photo of assembled unit - similar to TN-342
below |
motor/control end
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tuning coil end |
TN-342/WRT
antenna tuner for AN/WRT-2 transmitter
TN-342 pages from the AN/WRT-2 manual - Download 13 MB pdf
Photos of my
restoration job on a TN-342
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tuning coil end
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motor/control end
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