The Diplexer, cataloged under National Stock Number 5985-01-667-4238, 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 Tx Rx Systems Inc. Government technical data includes 2 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 | 5985-01-667-4238 |
| Primary Part Number | 81-55B-26-100 |
| Item Name | Diplexer |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Tx Rx Systems Inc |
| Status | ACTIVE |
| Operating Frequency | 350.0 MEGAHERTZ MINIMUM AND 406.0 MEGAHERTZ MAXIMUM LOCATION NOT OTHERWISE SPECIFIED |
| Transmission Line Type | COAXIAL CABLE |
| 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 |
|---|---|
| 81-55B-26-100 PRIMARY | Tx Rx Systems Inc (USA) |
NSN 5985-01-667-4238 is a Diplexer, manufactured by Tx Rx Systems Inc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-667-4238 has 1 manufacturer part number on file: 81-55B-26-100 (Tx Rx Systems Inc).
Key specifications for 81-55B-26-100: Overall Height: 0.87 INCHES NOMINAL IN; Overall Length: 2.28 INCHES NOMINAL IN; Overall Width: 4.17 INCHES NOMINAL IN; Operating Frequency: 350.0 MEGAHERTZ MINIMUM AND 406.0 MEGAHERTZ MAXIMUM LOCATION NOT OTHERWISE SPECIFIED. 2 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 5985-01-667-4238 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.