2 Comments

  1. I have an old HP 5245L Nixie tube based counter measuring it’s own reference 10MHz internal OXCO oscillator. I then measure the output of the counters reference with an old HP 8595E Spectrum Analyzer, and told the analyzer to plot out the highest power frequencies detected, of course the highest power frequency it measures is 10.000000MHz @67.56DBm (via a electromechanical attenuator on the input of the analyzer)

    Pretty amazing for a 60 year old frequency counter (and OXCO) and a 24 year old spectrum analyzer! Clearly shows the quality engineering and ingenuity of HP engineers back in the day.

    To this day, this ingenuity still exists in the people at Keysight Technologies (Formerly Agilent and HP)

  2. Having been a professional calibration tech in the past, working with similar age equipment, that is truly impressive. This kind of equipment was what we loved so we didn’t have to fight to get it in spec, lol.

Leave a Reply

Your email address will not be published. Required fields are marked *

SHOPPING CART

close