The Switch,antenna Unit, cataloged under National Stock Number 5985-01-593-0780, 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 Frontgrade Technologies Inc.. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-593-0780 |
| Primary Part Number | 2099-137 |
| Item Name | Switch,antenna Unit |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Frontgrade Technologies Inc. |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 2099-137 PRIMARY | Frontgrade Technologies Inc. (USA) |
| Reference | Meaning |
|---|---|
| 2099-137 | 3/9 Design control — primary reference Cobham Exeter, Inc. |
NSN 5985-01-593-0780 is a Switch,antenna Unit, manufactured by Frontgrade Technologies Inc., classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-593-0780 has 1 manufacturer part number on file: 2099-137 (Frontgrade Technologies Inc.).
Key specifications for 2099-137: Special Features: QUICK DISCONNECT TERMINALS TO PHONE JACK; Part Name Assigned by Controlling Agency: INAVY-SAFETY SWITCH, MODULE, ANTENNA UNIT; End Item Identification: AS-4679/U ANTENNA, NEXT ASSEMBLY 2099-303-2() USED ON 2099AU. 0 specifications are 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 5985-01-593-0780 has DEMIL Code Q. 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.