The Coupler,antenna, cataloged under National Stock Number 5985-01-497-1686, is classified within Federal Supply Class 5985 (Antennas, Waveguides, and Related Equipment) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Viavi Solutionsllc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-497-1686 |
| Primary Part Number | 201B |
| Item Name | Coupler,antenna |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Viavi Solutionsllc |
| Status | ACTIVE |
| Functional Description | PROVIDES AN ALTERNATE MEANS OF TESTING ALLIED SIGNAL TCAS INSTALLATIONS; ELIMINATES ERRORS DUE TO MULTIPATH OR REFLECTED SIGNALS, ALLOWING THE TCASSYSTEM TO BE TESTED WITHIN THE HANGAR ENVIRONMENT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
NSN 5985-01-497-1686 is a Coupler,antenna, manufactured by Viavi Solutionsllc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-497-1686 has 2 manufacturer part numbers on file: 201B (Viavi Solutionsllc), AC-201B (Viavi Solutionsllc).
Key specifications for 201B: Functional Description: PROVIDES AN ALTERNATE MEANS OF TESTING ALLIED SIGNAL TCAS INSTALLATIONS; ELIMINATES ERRORS DUE TO MULTIPATH OR REFLECTED SIGNALS, ALLOWING THE TCASSYSTEM TO BE TESTED WITHIN THE HANGAR ENVIRONMENT. 1 specification is documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 5985-01-497-1686 has DEMIL Code D. Demilitarization may be required before disposal or transfer to non-military entities.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.