1810021 — COUPLER,DIRECTIONAL

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

1810021: COUPLER,DIRECTIONAL.

The COUPLER,DIRECTIONAL is a the manufacturer industrial component. Key specifications include unit_type: WAVEGUIDE, overall_width: 1.380 INCHES NOMINAL IN, overall_height: 1.880 INCHES NOMINAL IN, overall_length: 4.980 INCHES MINIMUM AND 5.020 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5985-01-540-4944, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS

1810021

NSN: 5985-01-540-4944
FSC: 5985 — Antennas, Waveguides, and Related Equipment
CAGE: 03956 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)

SPECIFICATIONS

unit_type	WAVEGUIDE
overall_width	1.380 INCHES NOMINAL IN
overall_height	1.880 INCHES NOMINAL IN
overall_length	4.980 INCHES MINIMUM AND 5.020 INCHES MAXIMUM IN
NSN	5985-01-540-4944

COMPONENT DIAGRAM

KEY FEATURES

•

UNIT TYPE: WAVEGUIDE

TECHNICAL CHARACTERISTICS

OVERALL HEIGHT	1.880 INCHES NOMINAL IN
OVERALL LENGTH	4.980 INCHES MINIMUM AND 5.020 INCHES MAXIMUM IN
OVERALL WIDTH	1.380 INCHES NOMINAL IN
UNIT TYPE	WAVEGUIDE
SPECIAL FEATURES	END ITEM: RECIVER/TRANSMITTER, RADAR RT1860/BPS-16 (V).BANDWIDTH 9.2 TO 9.6 GHZ MINIUM. INSERTION LOSS THROUGH PORTS 0.5 DB MINIMUM. FORWARD/REVERSE COUPLING 50 DB + OR- 1 DB. PEAK INCIDENT POWER 200 KW MAX, 50 KW NOMINAL. RF PORTS 1 AND 2 MATE WITH UG-137 (WR-112) WAVEGUIDE FLANGE. COUPLER PORTS 3 AND 4 TYPE SMA FEMALE PER M39012.OPERATING TEMP -10 TO +70 DEGREES CELSIUS ALTITUDE 12,200 M NON-OPERATING.VSWR < 1.2:1 AT PORTS AND <1.05:1 THROUGH WAVEGUIDE. GHz

OTHER ITEMS IN FSC 5985 — Antennas, Waveguides, and Related Equipment

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

5985-00-001-1854 5985-00-001-1862 5985-00-001-1869 5985-00-001-1870 5985-00-001-1871 5985-00-001-1874 5985-00-001-1875 5985-00-001-1876

SUBSTITUTES & CROSS-REFERENCES 2

54112D-5SReference document

Same NSN cross-reference

Reference document — Secondary reference

54112-14DReference document

Same NSN cross-reference

Reference document — Secondary reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Normally procured from the manufacturer (OEM)Demilitarization required — mutilation + specific procedure

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FREQUENTLY ASKED QUESTIONS

What is 1810021?

1810021 is a COUPLER,DIRECTIONAL.

What parts can replace 1810021?

There are 2 known substitutes for 1810021: 54112D-5S, 54112-14D. Substitute compatibility should be verified for your specific system.

What is the NSN for 1810021?

1810021 is cataloged in the U.S. Government catalog under NSN 5985-01-540-4944. This indicates validated use in U.S. government and defense supply chains.

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1810021 — COUPLER,DIRECTIONAL

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