PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

FF6745-1Demultiplexer

Spectrum Microwave, Inc. · NSN 5820-01-536-8977 · FSC 5820 · No Item Name Available
Verified by PartsTable
NSN 5820-01-536-8977 — this item is cataloged by the U.S. Government under National Stock Number 5820-01-536-8977. Primary manufacturer part number: FF6745-1.
Features
  • Demultiplexer — FSC 5820
  • Channel Type and Quantity: 2 RECEIVING
  • Multiplexing Method: FREQUENCY DIVISION
  • 2 verified cross-references
  • Primary manufacturer: Spectrum Microwave, Inc.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Demultiplexer, cataloged under National Stock Number 5820-01-536-8977, is classified within Federal Supply Class 5820 (No Item Name Available) of the Communication, Detection, and Coherent Radiation Equipment group. The primary manufacturer of record is Spectrum Microwave, Inc.. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5820-01-536-8977
Primary Part NumberFF6745-1
Item NameDemultiplexer
FSC / FSG5820 / 58 — No Item Name Available
ManufacturerSpectrum Microwave, Inc.
StatusACTIVE
Channel Type and Quantity2 RECEIVING
Multiplexing MethodFREQUENCY DIVISION
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5905-01-036-6025 INTERCHANGEABLE
Resistor,fixed,film
5310-01-103-8840 INTERCHANGEABLE
Washer,key
5961-01-382-78911N645 INTERCHANGEABLE
Semiconductor Device,diode
Bkc Semiconductors Inc
Cross-Reference Index
Part NumberManufacturer
FF6745-1 PRIMARY Spectrum Microwave, Inc. (USA)
928212 L3 Technologies, Inc. Div L3 Keo (USA)
Related Parts
5905-01-036-6025INTERCHANGEABLE
RESISTOR,FIXED,FILM
5310-01-103-8840INTERCHANGEABLE
WASHER,KEY
5961-01-382-7891INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
1N645

Frequently Asked Questions

What is NSN 5820-01-536-8977?

NSN 5820-01-536-8977 is a Demultiplexer, manufactured by Spectrum Microwave, Inc., classified under FSC 5820 (No Item Name Available). Status: active.

What are the part numbers for NSN 5820-01-536-8977?

NSN 5820-01-536-8977 has 2 cross-referenced part numbers: FF6745-1 (Spectrum Microwave, Inc.), 928212 (L3 Technologies, Inc. Div L3 Keo).

What NSN replaces 5820-01-536-8977?

There are 3 known substitutes for 5820-01-536-8977: 5905-01-036-6025, 5310-01-103-8840, 5961-01-382-7891. Verify interchangeability with system specifications before substitution.

What are the specifications of FF6745-1?

Key specifications for FF6745-1: Channel Type and Quantity: 2 RECEIVING; End Item Identification: MODEL 778, PERISCOPE SYSTEM; Special Features: MANUFACTURERS NAME, TRIPLEXER; Multiplexing Method: FREQUENCY DIVISION. 4 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com