PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

RT542ASQReceiver-Transmitter,radio

Joint Electronics Type Designation System · NSN 5821-00-729-1370 · FSC 5821 · No Item Name Available
Verified by PartsTable
NSN 5821-00-729-1370 — this item is cataloged by the U.S. Government under National Stock Number 5821-00-729-1370. Primary manufacturer part number: RT542ASQ.
Features
  • Receiver-Transmitter,radio — FSC 5821
  • Output Frequency Rating: 225.000 MEGAHERTZ MINIMUM AND 399.900 MEGAHERTZ MAXIMUM
  • DC Voltage Rating: 430.0 VOLTS NOMINAL SECOND OPERATING POWER RQMT
  • Joint Electronics Type Designation System Item Type Number: RT-542/ASQ
  • Receiver Emission Type: A3
  • Power Output: 20.000 WATTS MAXIMUM
  • Joint Electronics Type Designation System Item Name: RECEIVER-TRANSMITTER,RADIO
  • DC Voltage Rating: 27.5 VOLTS NOMINAL FIRST OPERATING POWER RQMT
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Receiver-Transmitter,radio, cataloged under National Stock Number 5821-00-729-1370, is classified within Federal Supply Class 5821 (No Item Name Available) of the Communication, Detection, and Coherent Radiation Equipment group. The primary manufacturer of record is Joint Electronics Type Designation System. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5821-00-729-1370
Primary Part NumberRT542ASQ
Item NameReceiver-Transmitter,radio
FSC / FSG5821 / 58 — No Item Name Available
ManufacturerJoint Electronics Type Designation System
StatusCANCELLED
Output Frequency Rating225.000 MEGAHERTZ MINIMUM AND 399.900 MEGAHERTZ MAXIMUM
DC Voltage Rating430.0 VOLTS NOMINAL SECOND OPERATING POWER RQMT
Joint Electronics Type Designation System Item Type NumberRT-542/ASQ
Receiver Emission TypeA3
Power Output20.000 WATTS MAXIMUM
Joint Electronics Type Designation System Item NameRECEIVER-TRANSMITTER,RADIO
DC Voltage Rating27.5 VOLTS NOMINAL FIRST OPERATING POWER RQMT
PhaseTHREE FIRST OPERATING POWER RQMT
Transmitter Emission TypeA3
FSC Application DataINTEGRATED ELECTRONICS CENTRAL,AN/ASQ
Receiver Channel Quantity1750
DC Voltage Rating130.0 VOLTS NOMINAL THIRD OPERATING POWER RQMT
Transmitter Band Quantity1
Transmitter Channel Quantity1750
Frequency Rating420.0 HERTZ NOMINAL SECOND OPERATING POWER RQMT
Frequency Rating380.0 HERTZ NOMINAL FIRST OPERATING POWER RQMT
Receiver Band Quantity1
AC Voltage Rating115.0 VOLTS NOMINAL FIRST OPERATING POWER RQMT
Input Frequency Rating225.000 MEGAHERTZ MINIMUM AND 399.900 MEGAHERTZ MAXIMUM
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
5340-00-321-6446119848 INTERCHANGEABLE
Clip
Am General Llc
5945-00-807-2408 INTERCHANGEABLE
Solenoid,electrical
Cross-Reference Index
Part NumberManufacturer
RT542ASQ Joint Electronics Type Designation System (USA)
522-1263-004 Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA)
119848 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA)
Related Parts
5340-00-321-6446INTERCHANGEABLE
CLIP
119848
5945-00-807-2408INTERCHANGEABLE
SOLENOID,ELECTRICAL

Frequently Asked Questions

What is NSN 5821-00-729-1370?

NSN 5821-00-729-1370 is a Receiver-Transmitter,radio, manufactured by Joint Electronics Type Designation System, classified under FSC 5821 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5821-00-729-1370?

NSN 5821-00-729-1370 has 3 cross-referenced part numbers: RT542ASQ (Joint Electronics Type Designation System), 522-1263-004 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems), 119848 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp).

What NSN replaces 5821-00-729-1370?

There are 2 known substitutes for 5821-00-729-1370: 5340-00-321-6446, 5945-00-807-2408. Verify interchangeability with system specifications before substitution.

What are the specifications of RT542ASQ?

Key specifications for RT542ASQ: Output Frequency Rating: 225.000 MEGAHERTZ MINIMUM AND 399.900 MEGAHERTZ MAXIMUM; DC Voltage Rating: 430.0 VOLTS NOMINAL SECOND OPERATING POWER RQMT; Joint Electronics Type Designation System Item Type Number: RT-542/ASQ; Receiver Emission Type: A3. 20 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5821-00-729-1370 still in active supply?

NSN 5821-00-729-1370 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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