The Microphone,ribbon, cataloged under National Stock Number 5965-00-280-9677, is classified within Federal Supply Class 5965 (Headsets, Handsets, Microphones and Speakers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is L3 Technologies, Inc. Div Communication Systems-East. Government technical data includes 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5965-00-280-9677 |
| Primary Part Number | 77DXMI4045F |
| Item Name | Microphone,ribbon |
| FSC / FSG | 5965 / 59 — Headsets, Handsets, Microphones and Speakers |
| Manufacturer | L3 Technologies, Inc. Div Communication Systems-East |
| Status | ACTIVE |
| Length | 11.500 INCHES NOMINAL IN |
| Mounting Method | THREADED BUSHING |
| Sound Pickup Directional Type | OMNIDIRECTIONAL |
| Frequency Response Range in Hertz | +50.0 TO 15000.0 |
| Extended Cable Length | 30.0 FEET NOMINAL FT |
| Polarity Connection | NOT REQUIRED |
| Height | 2.250 INCHES NOMINAL IN |
| Impedance Rating | 30.0 OHMS NOMINAL AND 150.0 OHMS NOMINAL AND 250.0 OHMS NOMINAL |
| Output Sensitivity Rating in Decibels | -50.0 |
| Width | 3.750 INCHES NOMINAL IN |
| Output Sensitivity Rating Reference | 10 DYNES PER SQ CENTIMETER |
| Electrical Connection Type | INTEGRAL CORD |
| 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 |
|---|---|
| 77DXMI4045F PRIMARY | L3 Technologies, Inc. Div Communication Systems-East (USA) |
| Reference | Meaning |
|---|---|
| 77DXMI4045F | 3/9 Design control — primary reference Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin |
NSN 5965-00-280-9677 is a Microphone,ribbon, manufactured by L3 Technologies, Inc. Div Communication Systems-East, classified under FSC 5965, Headsets, Handsets, Microphones and Speakers. Status: active.
NSN 5965-00-280-9677 has 1 manufacturer part number on file: 77DXMI4045F (L3 Technologies, Inc. Div Communication Systems-East).
Key specifications for 77DXMI4045F: Length: 11.500 INCHES NOMINAL IN; Mounting Method: THREADED BUSHING; Sound Pickup Directional Type: OMNIDIRECTIONAL; Frequency Response Range in Hertz: +50.0 TO 15000.0. 12 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.