24:28

The Square Wave 1961

55:09

Tektronix THS700 Series Oscilloscope Mega Video

29:52

Fairchild Briefing on Integrated Circuits

31:51

Tektronix: The Cathode Ray Tube - Window to Electronics

21:04

Apollo Guidance Computer Part 1: Restoring the computer that put man on the Moon

22:58

Tektronix Making Quality Circuit Board Repairs 1980

2:04:29

DeForest Crosley Empress or Duchess Electrical Restoration

25:27

Vacuum Tubes/Valves by Mullard ~Manufacture for Audio TV Radio