The Comparator Module,signal, cataloged under National Stock Number 5840-01-261-2173, is classified within Federal Supply Class 5840 (Radar Equipment, Except Airborne) of the Communication, Detection, and Coherent Radiation Equipment group. The manufacturer of record is Technical Research and Manufacturing, Inc.. Government technical data includes 3 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5840-01-261-2173 |
| Primary Part Number | PCA1550-60 |
| Item Name | Comparator Module,signal |
| FSC / FSG | 5840 / 58 — Radar Equipment, Except Airborne |
| Manufacturer | Technical Research and Manufacturing, Inc. |
| Status | ACTIVE |
| Indicator Type | ANY ACCEPTABLE |
| Supplementary Features | THE WEIGHT SHALL NOT EXCEED 5.000 LB LBS |
| Electrical Power Source Relationship | OPERATING |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| PCA1550-60 PRIMARY | Technical Research and Manufacturing, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 377-74026-1 | 5/9 Secondary reference Technical Research and Manufacturing, Inc. |
| IQ-411-60-BO | 5/9 Secondary reference Smiths Interconnect Americas, Inc. |
| 377-74026-1 | 5/9 Secondary reference U.S. Government activity |
NSN 5840-01-261-2173 is a Comparator Module,signal, manufactured by Technical Research and Manufacturing, Inc., classified under FSC 5840, Radar Equipment, Except Airborne. Status: active.
NSN 5840-01-261-2173 has 1 manufacturer part number on file: PCA1550-60 (Technical Research and Manufacturing, Inc.).
Key specifications for PCA1550-60: Overall Height: 1.500 INCHES NOMINAL IN; Indicator Type: ANY ACCEPTABLE; Supplementary Features: THE WEIGHT SHALL NOT EXCEED 5.000 LB LBS; Electrical Power Source Relationship: OPERATING. 3 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 5840-01-261-2173 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.