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

This is a genuine, vintage RCA Radiotron 4BZ7 Medium-Mu Twin Triode 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, excellent condition. Useful for those antique radio restoration projects, experimentation, circuit research or to set up a private vacuum tube museum. First come first serve, only one of this rare historical vacuum tube available!
4BZ7 Medium-Mu Twin Triode RF Amplifier Miniature RCA Radiotron Electron Vacuum Tube [10 KB]


4BZ7 Medium-Mu Twin Triode
MFG: RCA Radiotron Quality Made in USA
RF, AF Amplifier, Oscillator
Heater: 4.2 V, 0.6 A
Plate: 250 Vmax, 20 mAmax, 2 Wmax
Base: 9-pin noval, all glass Collectible


NOS - New Old Stock tube Original box
Unused Price: $15 One available
S/H included within continental US
4BZ7 Noval 9-Pin Miniature All Glass Electronic Vacuum Tube Electrode Connections
PIN # 1 2 3 4 5 6 7 8 9
Electrode Anode T1 Grid-1 T1 Cath T1 Heater Heater Anode T2 Grid 2 T1 Cath T2 Int Shield
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