Model: 643-6972-003

Frequency Standard

Special Features:

Nuclear hardness critical item

Properties:

Dc Voltage Rating
Between 22.5 volts and 32.0 volts
Frequency Range Rating
+0.000/+5.000 megahertz
End Application
Milstar
Mounting Method
Bracket
Recording Device Accommodation
Not provided
Relationship To Similar Equipment
Item is 6625-01-343-3026 w/mountiing bracket
Supplementary Features
Rubidium based w/self test
NSN
6625-01-385-1779
Part Number
643-6972-003
Description
Frequency Standard
CAGE
95105

An item that can generate a fundamental frequency with a high degree of accuracy. Harmonics of this fundamental are then used as a reference point for checking throughout the radio spectrum. The standard may be stable crystal oscillator, noncrystal oscillator, tuning fork, atomic beam, molecular beam, gas cell, quantum mechanical resonator, or the like.

Part 643-6972-003 NSN 6625-01-385-1779

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
42641
FIIG:
T263-R
Concept No.:
App. Key:
RA
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
P
PMIC:
A
ESD:
A
ESD:
A
MMAC:
MZ
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
061700
UFC:
34580
LTL:
RATING VARIABLE
LCL:
--
WCC:
72D
TCC:
Z
SHC:
9
ACC:
Instruments/Radio

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Schedule B and Export
  • Schedule B: 9030908030
  • SITC: 87479
  • End Use: Measuring, testing, control instruments
  • NAICS: 334515
  • USDA: 1

Freight Class: Parts and accessories of articles of schedule b subheading 9030.39

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