PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

GT-1121Attenuator,fixed

Caes Systems Llc · NSN 5985-01-386-9608 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-01-386-9608 — this item is cataloged by the U.S. Government under National Stock Number 5985-01-386-9608. Primary manufacturer part number: GT-1121.
Features
  • Attenuator,fixed — FSC 5985
  • Rf Signal Attenuation in Decibels: 20.0
  • Unthreaded Mounting Hole Diameter: 0.102 INCHES MINIMUM AND 0.108 INCHES MAXIMUM IN
  • Body Length: 1.760 INCHES MINIMUM AND 1.800 INCHES MAXIMUM IN
  • Body Style: RECTANGULAR, TERMINAL/TERMINALS ON OPPOSITE SURFACES
  • Mounting Hole/stud Quantity: 4
  • Application Design: TRANSMISSION LINE
  • Voltage Standing Wave Ratio: 1.40
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Attenuator,fixed, cataloged under National Stock Number 5985-01-386-9608, is classified within Federal Supply Class 5985 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Caes Systems Llc. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5985-01-386-9608
Primary Part NumberGT-1121
Item NameAttenuator,fixed
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerCaes Systems Llc
StatusACTIVE
Rf Signal Attenuation in Decibels20.0
Unthreaded Mounting Hole Diameter0.102 INCHES MINIMUM AND 0.108 INCHES MAXIMUM IN
Body Length1.760 INCHES MINIMUM AND 1.800 INCHES MAXIMUM IN
Body StyleRECTANGULAR, TERMINAL/TERMINALS ON OPPOSITE SURFACES
Mounting Hole/stud Quantity4
Application DesignTRANSMISSION LINE
Voltage Standing Wave Ratio1.40
Operating Temp Range-55.0 TO 90.0 CELSIUS DEGC
Center to Center Distance Between Mounting Facilities Parallel to Width1.080 INCHES MINIMUM AND 1.120 INCHES MAXIMUM IN
Terminal Type and Quantity4 CONNECTOR
Mounting MethodUNTHREADED HOLE(S)
Coaxial Connector Series DesignationSMA
Voltage Standing Wave Ratio Frequency Range+0.9 TO 2.2 GIGAHERTZ
Frequency Range0.900 GIGAHERTZ MINIMUM AND 2.200 GIGAHERTZ MAXIMUM
Center to Center Distance Between Mounting Facilities Parallel to Length0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5136-00-203-6501 INTERCHANGEABLE
Tap,thread Cutting
5365-00-353-5303 INTERCHANGEABLE
Shim Set
5935-00-593-6347ST5M1417-001 INTERCHANGEABLE
Dummy Connector,receptacle
The Boeing Company Div Defense
5360-01-187-9006119635 INTERCHANGEABLE
Spring,helical,compression
Be Aerospace Consumables Management Dba Consumables Solutions Div Consumables Solutions
5975-01-379-7716 INTERCHANGEABLE
Plate,electrical Grounding
Cross-Reference Index
Part NumberManufacturer
GT-1121 Caes Systems Llc (USA)
119635 Systron-Donner Corp Microwave/instrument Div (USA)
314522 Systron-Donner Corp Microwave/instrument Div (USA)
Related Parts
5136-00-203-6501INTERCHANGEABLE
TAP,THREAD CUTTING
5365-00-353-5303INTERCHANGEABLE
SHIM SET
5935-00-593-6347INTERCHANGEABLE
DUMMY CONNECTOR,RECEPTACLE
ST5M1417-001
5360-01-187-9006INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
119635
5975-01-379-7716INTERCHANGEABLE
PLATE,ELECTRICAL GROUNDING

Frequently Asked Questions

What is NSN 5985-01-386-9608?

NSN 5985-01-386-9608 is a Attenuator,fixed, manufactured by Caes Systems Llc, classified under FSC 5985 (No Item Name Available). Status: active.

What are the part numbers for NSN 5985-01-386-9608?

NSN 5985-01-386-9608 has 3 cross-referenced part numbers: GT-1121 (Caes Systems Llc), 119635 (Systron-Donner Corp Microwave/instrument Div), 314522 (Systron-Donner Corp Microwave/instrument Div).

What NSN replaces 5985-01-386-9608?

There are 5 known substitutes for 5985-01-386-9608: 5136-00-203-6501, 5365-00-353-5303, 5935-00-593-6347 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of GT-1121?

Key specifications for GT-1121: Rf Signal Attenuation in Decibels: 20.0; Unthreaded Mounting Hole Diameter: 0.102 INCHES MINIMUM AND 0.108 INCHES MAXIMUM IN; Overall Length: 2.140 INCHES MINIMUM AND 2.180 INCHES MAXIMUM IN; Body Length: 1.760 INCHES MINIMUM AND 1.800 INCHES MAXIMUM IN. 19 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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