408A RF Pentode Western Electric Electron Tube High Frequency Oscillator Amplifier

This is an original Western Electric 408A HF, UHF, RF pentode seven pin miniature electronic tube. Substitute is American type 6028. Developed to be used in low microphonic noise environments by Bell Telephone Laboratories for HF [High Frequency] and UHF [Ultra High Frequency] amplifier and oscillator applications. May be used for special purpose circuits, oscillators, RF amplifiers, circuit development, antique radio, television restoration projects or to set up a private vacuum tube museum. It is new, unused, OEM no-box electronic tube. Only one available.

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HARD TO FIND - HISTORICAL TUBE Features: • 408A RF Pentode Electronic Tube Ruggedized • MFG: Western Electric - for Bell Laboratories • High quality Made in USA • Collectible Tube • HF and UHF Frequency Amplifier, Oscillator • Heater: 20 Vac-dc, 50 mA - Indirect • Plate Voltage: 180 Vmax • Substitute: 6028 • Plate Current: 18 mAmax, 1.7 Wmax • Base: 7-pin miniature, all glass Notes: • New, unused • OEM tube • Without box • Price: $12 • One available • S/H included within continental US

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• Only one item available unless otherwise indicated • Click the credit card pictures left to order • • E-Mails always answered unless return e-mail is blocked