In this issue

• More Back-Alley Brands
• The Secret Tubes for Radar Jamming Crossed-Field Noise-Generator Tubes
• Receiver Design RCA Application Note 75, 1937
• Operating GE Hi-Fi Tubes as Modulators
• Weird Tube of the Month: The Wheelco W
• Moon-Radar Jive
• Westinghouse View: To the Moon by Radar
• Sylvania Tubes Used in the Moon Radar Radar Echoes from the Moon
• The Dowd Archive
• VAC-M Protectors in Cuyama Valley
• Western Electric and Radioactivity
• Stems n’ Seeds in Tubes
• EG&G Krytrons and Sprytrons
• Change Those Tubes!
• Eimac Considers Making 30BP4s
• Some Date Codes from Tung-Sol
• Oddities from Eimac