The Waveguide Assembly, cataloged under National Stock Number 5985-01-649-9991, 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 Radio Frequency Systems Inc. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-649-9991 |
| Primary Part Number | EP65 |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Radio Frequency Systems Inc |
| Status | ACTIVE |
| Voltage Standing Wave Ratio | 1.062 |
| Flexibility | FLEXIBLE ALL TUBING SEGMENT |
| Specified Frequency | 4.01 GIGAHERTZ NOMINAL |
| Tubing Twist Type | TWISTABLE ALL TUBING SEGMENT |
| Tubing Twist Angle in Deg | 1.5 ALL TUBING SEGMENT |
| Insertion Loss in Decibels | 30.5 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| EP65 PRIMARY | Radio Frequency Systems Inc (USA) |
NSN 5985-01-649-9991 is a Waveguide Assembly, manufactured by Radio Frequency Systems Inc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-649-9991 has 1 manufacturer part number on file: EP65 (Radio Frequency Systems Inc).
Key specifications for EP65: Voltage Standing Wave Ratio: 1.062; Flexibility: FLEXIBLE ALL TUBING SEGMENT; Specified Frequency: 4.01 GIGAHERTZ NOMINAL; Tubing Twist Type: TWISTABLE ALL TUBING SEGMENT. 6 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.
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.