NSN 5825-00-187-7542, 5825001877542
PRESELECTOR

Federal Supply Classification: FSC 5825 - Radio Navigation Equipment, Except Airborne
National Item Identification Number: NIIN 001877542
Codification Country: United States
Item Name Code: INC 77777
Criticality: (X) This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Hazardous Material Indicator Code: (N) There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials.

Availability: Readily Available Qualified Suppliers: Currently qualifying suppliers

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DLMS^® Summary

National Stock Number 5825-00-187-7542

National Stock Number (NSN) 5825-00-187-7542, or NIIN 001877542, (preselector) was assigned September 8, 1972 in the Federal Logistics Information System (FLIS). This NSN does not replace any other NSNs.

There are 2 manufacturer part numbers associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 2 suppliers. Today, 2 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 2 suppliers are deemed design controlled or valid supply parts.

This part number has not been procured by the US Government in over 5 years.

Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Sep 05, 1995, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) Acquisition of this part is restricted to source(s) specified on "Source Control", "Altered Item" or "Selected Item" drawings/documents. Valid AMCs: 1, 2, 3, 4 and 5.

This NSN is assigned to Item Name Code (INC) 77777. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 5825001877542 does not contain precious metals.

This NSN is associated to Schedule B 8529904740: radio navigational aid apparatus parts (except radar). The Schedule B End Use is listed as telecommunications equipment. NAICS classification category 334511: search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing.

This information was last updated on Aug 01, 2025.

Technical Characteristics

III FSC APPLICATION DATA: (ZZZV) BEACON TRANSPONDER SET,ANTRN26
FSC APPLICATION DATA: (ZZZV) BEACON TRANSPONDER SET,ANTRN26
GENERAL CHARACTERISTICS ITEM DESCRIPTION: (TEXT) FREQUENCY RANGE,1025-1150 MHZ CONTINUOUSLY TUNABLE,INSERTION LOSS,1.250 DB MAXIMUM AT CENTER FREQUENCY PORM 400 KHZ,VSWR 1.5,1 MAXIMUM INPUT AND OUTPUT,IMPEDANCE 50 OHMS NOMINAL,ISOLATION WHEN TERMINATED IN 50 OHMS THE OUTPUT OF THE PRESELECTOR MUST BE 45 DB OR MORE DOWN AT A FREQUENCY PORM 63 MHZ FROM CENTER FREQUENCY AND 65 DB OR MORE DOWN AT A FREQUENCY PORM 126 MHZ FROM CENTER FREQUENCY,PROTECTED FROM CORROSION OF METAL PARTS,MOISTURE AND FUNGUS RESISTANT,WEIGHT 1.900 LBS MAX DIAL SHALL BE CALIBRATED OR BE LINEAR INTERPOLATED AT 1 MHZ INCREMENTS WITH LOCKING DEVICE,PRESELECTOR SHALL POSSESS A MTBF OF NO LESS THAN 40,000 HRS,TUNING MECHANISM DELIVERS A MINUMUM OF 5,000 CYCLES OF OPERATION,OPERATING TEMPERATURE MINUS 54 TO PLUS 185 DEG C,STORAGE TEMP MINUS 62 TO PLUS 71 DEG C,RELATIVE HUMIDITY OPERATING 96 PCT AT 30 DEG C,OPERATING ALTITUDE SEAL LEVEL TO 10,000 FT,6.975 IN. H,5.090 PORM 0.040 IN. W