Uploaded May 2021 | Updated September 2026, 54 minutes ago
In March 1927, a company named the Emerson Radval Corporation of New York had what seemed like a great idea, putting three triodes in one tube. A tube with three sections could serve as a detector, oscillator and amplifier in a radio, lowering costs while simplifying the design. So why didn't it catch on? Join Robert Lozier as he examines the Emerson Multivalve tube and the radios that used it.
If you enjoyed this video, consider becoming a member of the Antique Wireless Association at: antiquewireless.org/homepage/membership
Subscribe to the Antique Wireless Museum channel and you'll receive news of our latest video uploads.
In March 1927, a company named the Emerson Radval Corporation of New York had what seemed like a great idea, putting three triodes in one tube. A tube with three sections could serve as a detector, oscillator and amplifier in a radio, lowering costs while simplifying the design. So why didn't it catch on? Join Robert Lozier as he examines the Emerson Multivalve tube and the radios that used it.
If you enjoyed this video, consider becoming a member of the Antique Wireless Association at: antiquewireless.org/homepage/membership
Subscribe to the Antique Wireless Museum channel and you'll receive news of our latest video uploads.
