PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B810Converter,telegraph-Telephone Si

Lynch Communication Systems Inc · NSN 5805-00-610-0939 · FSC 5805 · No Item Name Available
Verified by PartsTable
NSN 5805-00-610-0939 — this item is cataloged by the U.S. Government under National Stock Number 5805-00-610-0939. Primary manufacturer part number: B810.
Features
  • Converter,telegraph-Telephone Si — FSC 5805
  • Joint Electronics Type Designation System Item Name: CONVERTER,TELEPHONE SIGNAL
  • Transmitted Switchboard Signal Frequency Rating: 16.0 HERTZ MINIMUM AND 60.0 HERTZ MAXIMUM
  • Transmitted Line Signal Frequency Rating: 300.0 HERTZ NOMINAL
  • AC Voltage Rating: 117.0 VOLTS NOMINAL LOCATION NOT OTHERWISE SPECIFIED
  • Electrical Power Source Relationship: OPERATING
  • Switchboard Side Current Type: AC
  • Phase: SINGLE LOCATION NOT OTHERWISE SPECIFIED
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Converter,telegraph-Telephone Si, cataloged under National Stock Number 5805-00-610-0939, is classified within Federal Supply Class 5805 (No Item Name Available) of the Communication, Detection, and Coherent Radiation Equipment group. The primary manufacturer of record is Lynch Communication Systems Inc. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5805-00-610-0939
Primary Part NumberB810
Item NameConverter,telegraph-Telephone Si
FSC / FSG5805 / 58 — No Item Name Available
ManufacturerLynch Communication Systems Inc
StatusCANCELLED
Joint Electronics Type Designation System Item NameCONVERTER,TELEPHONE SIGNAL
Transmitted Switchboard Signal Frequency Rating16.0 HERTZ MINIMUM AND 60.0 HERTZ MAXIMUM
Transmitted Line Signal Frequency Rating300.0 HERTZ NOMINAL
AC Voltage Rating117.0 VOLTS NOMINAL LOCATION NOT OTHERWISE SPECIFIED
Electrical Power Source RelationshipOPERATING
Switchboard Side Current TypeAC
PhaseSINGLE LOCATION NOT OTHERWISE SPECIFIED
Signal TypeRING DOWN AND SUPERVISORY
Communication Circuit Quantity1 AND 3
Joint Electronics Type Designation System Item Type NumberCV-566/GT
Transmitted Signal DC Voltage Rating48.0 VOLTS NOMINAL
Frequency Rating60.0 HERTZ NOMINAL LOCATION NOT OTHERWISE SPECIFIED
Received Line Signal Frequency Rating300.0 HERTZ NOMINAL
Received Switchboard Signal Frequency Rating16.0 HERTZ MINIMUM AND 60.0 HERTZ MAXIMUM
Received Signal DC Voltage Rating48.0 VOLTS NOMINAL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 6
5315-00-014-1115B810 INTERCHANGEABLE
Pin,straight,headless
Dresser, Llc
3110-00-227-2068110852 INTERCHANGEABLE
Bearing,roller,needle
Cummins Inc.
5970-00-392-0899 INTERCHANGEABLE
Insulating,strip
5365-00-631-6035950157-55 INTERCHANGEABLE
Spacer,sleeve
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
3110-00-902-1645B810X0H INTERCHANGEABLE
Bearing,roller,needle
Timken Aerospace, Inc Dba Torrington Product
3455-00-988-2894 INTERCHANGEABLE
Blade,band Saw,metal Cutting
Cross-Reference Index
Part NumberManufacturer
B810 Lynch Communication Systems Inc (USA)
CV566AGT Joint Electronics Type Designation System (USA)
CV566GT Joint Electronics Type Designation System (USA)
CV566GT Lynch Communication Systems Inc (USA)
2076450-0701 Raytheon Company Dba Raytheon Co (USA)
Related Parts
5315-00-014-1115INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
B810
3110-00-227-2068INTERCHANGEABLE
BEARING,ROLLER,NEEDLE
110852
5970-00-392-0899INTERCHANGEABLE
INSULATING,STRIP
5365-00-631-6035INTERCHANGEABLE
SPACER,SLEEVE
950157-55
3110-00-902-1645INTERCHANGEABLE
BEARING,ROLLER,NEEDLE
B810X0H
3455-00-988-2894INTERCHANGEABLE
BLADE,BAND SAW,METAL CUTTING

Frequently Asked Questions

What is NSN 5805-00-610-0939?

NSN 5805-00-610-0939 is a Converter,telegraph-Telephone Si, manufactured by Lynch Communication Systems Inc, classified under FSC 5805 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5805-00-610-0939?

NSN 5805-00-610-0939 has 5 cross-referenced part numbers: B810 (Lynch Communication Systems Inc), CV566AGT (Joint Electronics Type Designation System), CV566GT (Joint Electronics Type Designation System), CV566GT (Lynch Communication Systems Inc), 2076450-0701 (Raytheon Company Dba Raytheon Co).

What NSN replaces 5805-00-610-0939?

There are 6 known substitutes for 5805-00-610-0939: 5315-00-014-1115, 3110-00-227-2068, 5970-00-392-0899 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B810?

Key specifications for B810: Overall Width: 17.000 INCHES NOMINAL IN; Joint Electronics Type Designation System Item Name: CONVERTER,TELEPHONE SIGNAL; Transmitted Switchboard Signal Frequency Rating: 16.0 HERTZ MINIMUM AND 60.0 HERTZ MAXIMUM; Transmitted Line Signal Frequency Rating: 300.0 HERTZ NOMINAL. 18 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5805-00-610-0939 still in active supply?

NSN 5805-00-610-0939 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.
PartsTable Design LLC · partstable.com