In this issue

• An RCA Gammatron?
• Digital Glassware, Part1: Cold Cathode Gas-Filled Counter Tubes
• Test Limits for Glass Power Triodes
• A New Way to Read Faded Tube ID’s
• AWV Radiotrons, ca. 1946
• “813 Is To 803 As 814 Is To 804”
• A Self-Converging CRT
• 6L6G’s as Mobile-Phone Jammer
• Completing the JIS Code
• Tube Language at RCA