Electrical Frequency Meter

Features

Specifications

• Overall Height:
  18.500 inches
• Overall Width:
  14.250 inches
• Frequency Rating:
  Between 50.0 hertz and 1.0 kilohertz
• Furnished Items And Quantity:
  Case 1, cord 1
• Frequency Response Range:
  +10.0/+100.0 megahertz
• Features Provided:
  Internal frequency calibrating crystal
• Phase:
  Single
• Functional Classification:
  Aa-6.3
• Functional Description:
  Portable instrument capable of measuring any frequency within the range of 10 to 100 mhz w/an accuracy of porm 0.001 pct. Uses the heterodyne principle for determining the frequency of an unknown signal; measurement is accomplished by heterodyning a known signal from the test instrument against the unknown signal. Check points are used to calibrate the instrument throughout its operating range. Used to test the following avionics systems: an/arc-44; an/arc-45; an/arc-54; an/arc-60; an/arc-73; an/arn-32; an/frc-15; an/trc-68; an/urc-35c; r-508/arc, and r-509/arc
• Entry Date:
  70-01-09
• Reference Data And Literature:
  Dept of army publications; tm11-5095 w/changes 3, 4, 5, oct 55; tm11-6625-284-20p, nov 59; tm11-6625-284-35p, nov 59; tb11-6625-284-35/1, nov 59
• Relationship To Similar Equipment:
  INTE-RC-HAN-GEAB
• Type/model Designation:
  An/urm-80
• Federal Supply Class (fsc):
  Electrical and electronic properties measuring and testing instruments
• National Stock Number (nsn):
  6625-00-649-4286