The Propagation Frequency Evaluation, cataloged under National Stock Number 6660-01-148-4205, is classified within Federal Supply Class 6660 (Meteorological Instruments and Apparatus) of the Instruments and Laboratory Equipment group. Government technical data includes 4 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6660-01-148-4205 |
| Item Name | Propagation Frequency Evaluation |
| FSC / FSG | 6660 / 66 — Meteorological Instruments and Apparatus |
| Status | ACTIVE |
| Reference Data and Literature | 31M1-2FMQ12-4 |
| Storage Temp Range | -80.0 TO 160.0 FAHRENHEIT DEGF |
| Functional Description | MEASURES,RECORDS,TRANSMITS VERTICAL IONOSPHERIC INFO INCL FREQ,HEIGHTS,COEFFICIENTS USED TO DEFINE E AND F LAYERS OF IONOSPHERE |
| Test Data Document | 98749-82-033A SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.). A |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL C — Remove/Demil Key Points |
| Hazard | Hazardous per DLA record (HMIC Y) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 50400001 | C/1 Advisory reference — outside the item-of-supply concept University of Massachusetts Lowell Div Office of Sponsored Programs |
| 50400001 | 3/9 Design control — primary reference University of Lowell Research Foundation |
| AN/FMQ-12 | 5/2 Secondary reference U.S. Government activity |
| 82-033A | 5/9 Secondary reference U.S. Government activity |
NSN 6660-01-148-4205 is a Propagation Frequency Evaluation, classified under FSC 6660, Meteorological Instruments and Apparatus. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 5962-01-230-4321, 2640-01-564-5246. Verify interchangeability with system specifications before substitution.
Key specifications for 6660-01-148-4205: Reference Data and Literature: 31M1-2FMQ12-4; Storage Temp Range: -80.0 TO 160.0 FAHRENHEIT DEGF; Special Features: C/O HIGH FREQ RADIO PULSED TRANSMITTER,HF RADIO RECEIVER,EMBEDDED COMPUTER AND ON-SITE AND REMOTE PERIPHERAL EQUIPMENT;FREQ 1.0-30 MHZ IN 1MHZ INCREMENTS;OBSERVATION EVERY 5,10,15,30,60MINS. OR NORMALLY ONCE EVERY 15 MINS.FROM REMOTE/ON-SITE;AUTOMATIC RESTART;RACK MTD;72.000 IN.H;21.750 IN.D;COLOR SEMI-GLOSS BLUE NO.25488 FED-STD-595;RELIABILITY OF 800 HOURS MHz; Functional Description: MEASURES,RECORDS,TRANSMITS VERTICAL IONOSPHERIC INFO INCL FREQ,HEIGHTS,COEFFICIENTS USED TO DEFINE E AND F LAYERS OF IONOSPHERE. 4 specifications are documented in the U.S. Government catalog.
Hazardous per DLA record (HMIC Y). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 6660-01-148-4205 has DEMIL Code C. 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.