The Qfour Signal Monitor, cataloged under National Stock Number 6660-01-004-1561, is classified within Federal Supply Class 6660 (Meteorological Instruments and Apparatus) of the Instruments and Laboratory Equipment group. The manufacturer of record is Department of the Air Force Cryptologic Systems Group. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6660-01-004-1561 |
| Primary Part Number | ED272-00313 |
| Item Name | Qfour Signal Monitor |
| FSC / FSG | 6660 / 66 — Meteorological Instruments and Apparatus |
| Manufacturer | Department of the Air Force Cryptologic Systems Group |
| Status | ACTIVE |
| General Characteristics Item Description | SET CONSISTS OF DIGITAL DATA AND CONTROL,LEFT,1,DIGITAL DATA AND CONTROL,RIGHT,1,GATED CHAIN AMPLIFIER 3,POWER CONTROL 7,MAIN POWER CONTROL 1,MAIN POWER BOX 1,DATA PROCESSOR CONTROL PANEL 1,MONITOR 1,AMPLIFIERS 3,DETECTOR,SAMPLE GATE,GENERATOR 1,AZIMUTH AD CONVERTER 1,DELAY DRIVERS 3,DISPLAY CONTROL 1,FILM RECORDER 1,RACK 7,TELEPHONE,SELFPOWERED 2,WAVEFORM PEAK DETECTOR 2,WAVEFORM GATE SELECTOR 1,FILM TAKE/UP MAGAZINE 2,FILM SUPPLY MAGAZINE 2,POWER METER PANEL 1,DISCRIMINATOR 3,THRESHOLD CONTROL 1,SIMULATOR AND SYSTEM CONTROL 1,CAMERA UNIT 1,CAMERA DRIVE ELECTRONICS 2,PREAMPLIFIER ADAPTER 1,WF DELAY LINE 1,DIGITAL AZIMUTH SELECTOR 1,SPECTRUM ANALYZER 1,SPECTRUM ANALYZER CONTROL 1,POWER ASSY 1,BLOWER 8,POWER SUPPLY 17,MATRIX,DRIVER ASSY 1,DF ANTENNA ASSY 1,PREAMPLIFIER 2,CABLES ASSORTED STYLES 38,PROJECTOR ASSY 1,FOCUSING SCREEN ASSY 1,VOLTAGE BALANCE BOX 1,CARD EXTENDER 1,PIN,MIXED 6,TEST BOX 1,ANTENNA 3 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| ED272-00313 PRIMARY | Department of the Air Force Cryptologic Systems Group (USA) |
NSN 6660-01-004-1561 is a Qfour Signal Monitor, manufactured by Department of the Air Force Cryptologic Systems Group, classified under FSC 6660, Meteorological Instruments and Apparatus. Status: active.
NSN 6660-01-004-1561 has 1 manufacturer part number on file: ED272-00313 (Department of the Air Force Cryptologic Systems Group).
Key specifications for ED272-00313: General Characteristics Item Description: SET CONSISTS OF DIGITAL DATA AND CONTROL,LEFT,1,DIGITAL DATA AND CONTROL,RIGHT,1,GATED CHAIN AMPLIFIER 3,POWER CONTROL 7,MAIN POWER CONTROL 1,MAIN POWER BOX 1,DATA PROCESSOR CONTROL PANEL 1,MONITOR 1,AMPLIFIERS 3,DETECTOR,SAMPLE GATE,GENERATOR 1,AZIMUTH AD CONVERTER 1,DELAY DRIVERS 3,DISPLAY CONTROL 1,FILM RECORDER 1,RACK 7,TELEPHONE,SELFPOWERED 2,WAVEFORM PEAK DETECTOR 2,WAVEFORM GATE SELECTOR 1,FILM TAKE/UP MAGAZINE 2,FILM SUPPLY MAGAZINE 2,POWER METER PANEL 1,DISCRIMINATOR 3,THRESHOLD CONTROL 1,SIMULATOR AND SYSTEM CONTROL 1,CAMERA UNIT 1,CAMERA DRIVE ELECTRONICS 2,PREAMPLIFIER ADAPTER 1,WF DELAY LINE 1,DIGITAL AZIMUTH SELECTOR 1,SPECTRUM ANALYZER 1,SPECTRUM ANALYZER CONTROL 1,POWER ASSY 1,BLOWER 8,POWER SUPPLY 17,MATRIX,DRIVER ASSY 1,DF ANTENNA ASSY 1,PREAMPLIFIER 2,CABLES ASSORTED STYLES 38,PROJECTOR ASSY 1,FOCUSING SCREEN ASSY 1,VOLTAGE BALANCE BOX 1,CARD EXTENDER 1,PIN,MIXED 6,TEST BOX 1,ANTENNA 3; End Item Identification: PROJECT NO. 104,PROGRAM B/20. 1 specification is 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.
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.