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2 Matched National Union Type 30 Radio Vacuum Tubes - 1940 ' S Vintage Triodes




Item History & Price

Information:
Reference Number: Avaluer:29063440Country/Region of Manufacture: United States
Application: Vintage RadiosType: 30 - Triode Vacuum Tubes
Brand: National Union
Original Description:
302 National Union 30 Vacuum TubesMatched Pair 1940’s Vintage 2-Volt Triodes
Hickok TV-7D/U tests read 49 and 49. A reading of 23is the minimum recommended. The 30 (aka VT-27) is a triode detector tube with a 2-voltfilament and is widely used in radios from the 1920’s to the 1940's. This tubetype is also used in low-power radio transmitting applications.



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