The Converter,frequency,electronic, cataloged under National Stock Number 5985-00-080-7204, 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 Joint Electronics Type Designation System. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5985-00-080-7204 |
| Primary Part Number | CM-77A/USM |
| Item Name | Converter,frequency,electronic |
| FSC / FSG | 5985 / 59 — No Item Name Available |
| Manufacturer | Joint Electronics Type Designation System |
| Status | CANCELLED |
| Circuit Construction Type | ELECTRON TUBE |
| Operating AC Frequency in Hertz | 1000.0 MAXIMUM SINGLE VOLTAGE |
| Frequency Per Channel | 12.4 GIGAHERTZ MAXIMUM OPERATING CHANNEL |
| External AC Operating Voltage in Volts | 230.0 MAXIMUM SINGLE VOLTAGE |
| Average Life Measurement | NOT RATED |
| Basic Shape Style | RECTANGULAR OR SQUARE |
| Operating AC Frequency in Hertz | 50.0 MINIMUM SINGLE VOLTAGE |
| External AC Operating Voltage in Volts | 115.0 MINIMUM SINGLE VOLTAGE |
| Reference Data and Literature | DEPT OF ARMY PUBLICATIONS: TB9-6625-336-50,19 NOV 64; TM11-6625-493-15 W/ CHANGES 1 & 2,29 SEP 64; TM 11-6625-493-20P; TM11-6625-493-45P,19 OCT 64 W |
| Functional Description | EXTENDS FREQUENCY MEASUREMENT RANGE OF AN/USM-26 & AN/USM-207A INTO MICROWAVE RANGE; ALONG W/ AN/USM-26 OR -207A CAN MEASURE FREQUENCIES UP TO 12.4 GHZ,OR W/ AN EXTERNAL MIXER 1-18 GHZ; CAN BE USED W/OUT A FREQUENCY COUNTER TO MEASURE FREQUENCIES BELOW 4 GHZ W/IN ABOUT PORM 0.5 PCT; FREQUENCY IS DETERMINED BY ZERO-BEATING THE UNKNOWN SIGNAL W/ A HARMONIC OF AN EXTREMELY STABLE SIGNAL GENERATED W/IN & TO MEASURE CM-77A FUNDAMENTAL FREQUENCY ON A COUNTER; MULTIPLYING COUNTER READOUT BY HARMONIC CAUSING THE ZERO-BEAT GIVES INPUT FREQUENCY; HARMONIC NO. IS DETERMINED FROM PREVIOUS KNOWLEDGE OF INPUT FREQUENCY OR BY COMPUTATION; ZER/-BEAT IS DISPLAYED ON INTERNAL OSCILLOSCOPE GHz |
| Frequency Per Channel | 10.0 MEGAHERTZ MINIMUM OPERATING CHANNEL |
| Installation Design | TOP OF CABINET/COUNTER |
| Inclosure Type | ENCASED |
| Entry Date | 70-12-01 |
| Relationship to Similar Equipment | INTERCHANGEABLE W/ 6625009739267 & 6625007355167; SIMILAR TO CM-77/USM |
| Type/model Designation | CM-77A/USM A |
| Functional Classification | AA-6.3 |
| Phase | SINGLE |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| CM-77A/USM | Joint Electronics Type Designation System (USA) |
| 540B | Hewlett-Packard Company Dba HP (USA) |
| 540B | Keysight Technologies, Inc. (USA) |
| CM77AUSM | Boustead Electric and Mfg Co (USA) |
| 540B | Keysight Technologies Inc (USA) |
NSN 5985-00-080-7204 is a Converter,frequency,electronic, manufactured by Joint Electronics Type Designation System, classified under FSC 5985 (No Item Name Available). Status: cancelled.
NSN 5985-00-080-7204 has 5 cross-referenced part numbers: CM-77A/USM (Joint Electronics Type Designation System), 540B (Hewlett-Packard Company Dba HP), 540B (Keysight Technologies, Inc.), CM77AUSM (Boustead Electric and Mfg Co), 540B (Keysight Technologies Inc).
There are 2 known substitutes for 5985-00-080-7204: 6625-00-288-0184, 4940-01-058-7328. Verify interchangeability with system specifications before substitution.
Key specifications for CM-77A/USM: Circuit Construction Type: ELECTRON TUBE; Operating AC Frequency in Hertz: 1000.0 MAXIMUM SINGLE VOLTAGE; Frequency Per Channel: 12.4 GIGAHERTZ MAXIMUM OPERATING CHANNEL; External AC Operating Voltage in Volts: 230.0 MAXIMUM SINGLE VOLTAGE. 21 total characteristics are documented in the Federal Logistics Information System.
NSN 5985-00-080-7204 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.