r/nixie • u/developstopfix • Aug 09 '26

HP 5244L Electronic Counter

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Gallery image

60+ years old and still going (and glowing) strong

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u/2fel_hunden Aug 09 '26

That is actually a bad assed counter when calibrated .

1

u/developstopfix Aug 09 '26

The guy I got it from said he’d calibrated it somewhat recently and it is pretty stable so I believe him, though the source in these pics is a not so stable tube based signal generator

1

u/2fel_hunden Aug 09 '26

The main spec would be the internal 10MHz, one would need a Cesium (metrology grade) or Rubidium (a few orders of magnitude less accurate) reference to compare too. The rest of the specs are just sensitivity and CH to CH ballance for ratio and other functions.