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21-50-114-F81 — ANTENNA

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

21-50-114-F81: ANTENNA.

The ANTENNA is a the manufacturer industrial component. Key specifications include design_type: BLADE FIRST ANTENNA, power_rating: 25.0 WATTS AVERAGE FIRST ANTENNA, overall_width: 3.5 INCHES NOMINAL IN, terminal_type: CONNECTOR, RECEPTACLE SECOND ANTENNA, overall_height: 9.76 INCHES NOMINAL IN, overall_length: 7.5 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5985-01-667-4868, 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
21-50-114-F81
NSN: 5985-01-667-4868
FSC: 5985 — Antennas, Waveguides, and Related Equipment
CAGE: 54520 — AVIATECH CORPORATION DBA AVIATECH CORP (USA)
SPECIFICATIONS
design_typeBLADE FIRST ANTENNA
power_rating25.0 WATTS AVERAGE FIRST ANTENNA
overall_width3.5 INCHES NOMINAL IN
terminal_typeCONNECTOR, RECEPTACLE SECOND ANTENNA
overall_height9.76 INCHES NOMINAL IN
overall_length7.5 INCHES NOMINAL IN
frequency_rating512.0 MEGAHERTZ MAXIMUM FIRST ANTENNA
radiation_patternOMNIDIRECTIONAL ALL ANTENNAS
mounting_hole_diameter0.203 INCHES NOMINAL IN
mounting_hole_quantity11
end_item_identificationHH60 HELI
coaxial_connector_series_designationTNC SECOND ANTENNA
NSN5985-01-667-4868
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available ANTENNA TITLE COMPONENT PN 21-50-114-F81 MFR ANTENNA
KEY FEATURES
•
MOUNTING HOLE QUANTITY: 11
•
TERMINAL TYPE: CONNECTOR, RECEPTACLE SECOND ANTENNA
•
DESIGN TYPE: BLADE FIRST ANTENNA
•
RADIATION PATTERN: OMNIDIRECTIONAL ALL ANTENNAS
•
MOUNTING HOLE DIAMETER: 0.203 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
MOUNTING HOLE QUANTITY11
OVERALL HEIGHT9.76 INCHES NOMINAL IN
TERMINAL TYPECONNECTOR, RECEPTACLE SECOND ANTENNA
TERMINAL TYPESCREW FIRST ANTENNA
DESIGN TYPEBLADE FIRST ANTENNA
DESIGN TYPEBLADE SECOND ANTENNA
RADIATION PATTERNOMNIDIRECTIONAL ALL ANTENNAS
MOUNTING HOLE DIAMETER0.203 INCHES NOMINAL IN
OVERALL LENGTH7.5 INCHES NOMINAL IN
OVERALL WIDTH3.5 INCHES NOMINAL IN
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 1
X201424827Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandDemilitarization required — mutilation + specific procedure
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FREQUENTLY ASKED QUESTIONS
What is 21-50-114-F81?
21-50-114-F81 is a ANTENNA.
What parts can replace 21-50-114-F81?
There is 1 known substitute for 21-50-114-F81: X201424827. Substitute compatibility should be verified for your specific system.
What is the NSN for 21-50-114-F81?
21-50-114-F81 is cataloged in the U.S. Government catalog under NSN 5985-01-667-4868. 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.