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1818S — COUPLER,DIRECTIONAL

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

1818S: COUPLER,DIRECTIONAL.

The COUPLER,DIRECTIONAL is a the manufacturer industrial component. Key specifications include unit_type: COAXIAL LINE OR TRANSMISSION LINE, design_type: BIDIRECTIONAL, usage_design: MAIN LINE AND SECONDARY LINE TERMINAL FITTING, overall_width: 2.060 INCHES NOMINAL IN, overall_height: 0.530 INCHES NOMINAL IN, overall_length: 2.840 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5985-01-181-0341, 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
1818S
NSN: 5985-01-181-0341
FSC: 5985 — Antennas, Waveguides, and Related Equipment
CAGE: 62331 — KRYTAR, INC. DBA KRYTAR INC DIV KRYTAR (USA)
SPECIFICATIONS
unit_typeCOAXIAL LINE OR TRANSMISSION LINE
design_typeBIDIRECTIONAL
usage_designMAIN LINE AND SECONDARY LINE TERMINAL FITTING
overall_width2.060 INCHES NOMINAL IN
overall_height0.530 INCHES NOMINAL IN
overall_length2.840 INCHES NOMINAL IN
power_loss_in_decibels15.0 AND 17.0
radio_frequency_rating2.0 GIGAHERTZ MINIMUM AND 18.0 GIGAHERTZ MAXIMUM
NSN5985-01-181-0341
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available COUPLER,DIRECTIONAL TITLE COMPONENT PN 1818S MFR COUPLER,DIRECTIONAL
KEY FEATURES
•
USAGE DESIGN: MAIN LINE AND SECONDARY LINE TERMINAL FITTING
•
POWER LOSS IN DECIBELS: 15.0 AND 17.0
•
DESIGN TYPE: BIDIRECTIONAL
•
RADIO FREQUENCY RATING: 2.0 GIGAHERTZ MINIMUM AND 18.0 GIGAHERTZ MAXIMUM
•
UNIT TYPE: COAXIAL LINE OR TRANSMISSION LINE
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.530 INCHES NOMINAL IN
USAGE DESIGNMAIN LINE AND SECONDARY LINE TERMINAL FITTING
POWER LOSS IN DECIBELS15.0 AND 17.0
DESIGN TYPEBIDIRECTIONAL
RADIO FREQUENCY RATING2.0 GIGAHERTZ MINIMUM AND 18.0 GIGAHERTZ MAXIMUM
OVERALL LENGTH2.840 INCHES NOMINAL IN
OVERALL WIDTH2.060 INCHES NOMINAL IN
UNIT TYPECOAXIAL LINE OR TRANSMISSION LINE
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1818S?
1818S is a COUPLER,DIRECTIONAL.
What is the NSN for 1818S?
1818S is cataloged in the U.S. Government catalog under NSN 5985-01-181-0341. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.