RCA OD3/ VT139/ VR150 Vacuum Tube
Vacuum Tube

RCA OD3/ VT139/ VR150 Vacuum Tube

$175.00
In stock · 59994 available

RCA produced this VT-139 / VR-150 / OD3 voltage regulator tube in the United States. Developed for industrial and communications equipment, this gas-filled regulator type helped maintain consistent operating voltages in tube-era power supplies. It features a black base, standard octal construction, and the characteristic internal electrode structure used in cold-cathode voltage regulator tubes. Archive Assessed, Apos Assured All Archive tubes are thoroughly tested, inspected, photographed, and i

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