The Diplexer, cataloged under National Stock Number 5985-01-050-2798, 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 Thales Aerospace Communications Fullerton Inc.. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-050-2798 |
| Primary Part Number | CI1120 |
| Item Name | Diplexer |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Thales Aerospace Communications Fullerton Inc. |
| Status | ACTIVE |
| Operating Frequency | 108.0 MEGAHERTZ MINIMUM AND 340.0 MEGAHERTZ MAXIMUM LOCATION NOT OTHERWISE SPECIFIED |
| 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 |
|---|---|
| CI1120 PRIMARY | Thales Aerospace Communications Fullerton Inc. (USA) |
| Reference | Meaning |
|---|---|
| 5985PL0926844 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 5985PL1063331 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| C8803 | 5/2 Secondary reference U.S. Government activity |
NSN 5985-01-050-2798 is a Diplexer, manufactured by Thales Aerospace Communications Fullerton Inc., classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-050-2798 has 1 manufacturer part number on file: CI1120 (Thales Aerospace Communications Fullerton Inc.).
Key specifications for CI1120: Overall Length: 3.960 INCHES NOMINAL IN; Overall Width: 2.000 INCHES NOMINAL IN; Operating Frequency: 108.0 MEGAHERTZ MINIMUM AND 340.0 MEGAHERTZ MAXIMUM LOCATION NOT OTHERWISE SPECIFIED; Special Features: SPECIFIC FREQUENCY RANGES-108 MHZ TO 120 MHZ FOR NAV INPUT,325 TO 340 FOR G/S INPUT; ISOLATION 40 DB MIN; FOR BOTH FREQUENCY RANGES BTWN NAV AND G/S INPUTS; INSERTION LOSS 0.5 DB MAX; TYP 0.3 DB MAX IN NAV AND G/S FREQ RANGES; VSWR 1.5 TO 1 MAX TYP; 1.3 THROUGHOUT THE SPECIFIC FREQUENCY RANGES ON EACH CONNECTOR INPUT MHz. 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 5985-01-050-2798 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.