4BZ7 Medium-Mu Twin Triode RF Amplifier RCA Radiotron Electron Vacuum Tube

This is a genuine, vintage RCA 4BZ7 Radiotron Electron Tube in it's original box. A collector's special vacuum tube. This tube was developed for direct-coupled cathode-drive and push-pull direct-coupled cathode-drive RF amplifiers. It has high enough maximum frequency to allow it's use in television tuners in the VHF range. Also a good general purpose dual triode replacement. It is new, unused, boxed, and kept for all these years in mint condition. Excellent for those antique radio restoration projects or to set up a private vacuum tube museum. First come first serve, as only one of this rare historical vacuum tube available!

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HARD TO FIND - HISTORICAL TUBE Features: • 4BZ7 Radiotron Electron Tube • Mfg: RCA (Radio Corporation of America) • RF Amplifier • Heater: 4.2 V, 0.6 A • Plate: 250 Vmax, 2 Wmax • Cathode Current: 20 mAmax • Base: 9-pin miniature, all glass • High quality Made in USA • Tube Collector's Special Notes: • NOS tube - new old stock • New, unused, in original box • Only one available • Unused - Price: $20 • 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