OddMix VACUUM TUBE - 3Q4 |
3Q4 Power Pentode Amplifier Miniature Glass Philco Radio Electron Vacuum Tube
This is a genuine, collectible, vintage, 3Q4 Philco Power Pentode discontinued radio electron tube in it's original box. Developed for Class A amplifier use in receivers. Useful for replacement, antique radio restoration projects, experimentation, circuit design, or to set up a private vacuum tube museum. It is NOS tube - New Old Stock, unused, boxed, excellent condition. First come first serve, as only one of this rare, discontinued, historical vacuum tube available!
Features: • 3Q4 Power Pentode AF, RF • MFG: Philco • Quality Made in USA • Amplifier, Oscillator • Heater: 1.4/2.8 V, 100/50 mA • Plate Voltage: 90 Vmax, 9.5/7.7 mAmax - Class A • Base: 7-pin miniature, all glass • Collectible Notes: • NOS - [New Old Stock] tube - Original box • Unused • Price: $50 • One available • S/H included within continental US |
3Q4 Miniature 7-Pin All Glass Electronic Vacuum Tube Electrode Connections
PIN # | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
Electrode | Heater | Anode | G1 | G2 | FC Grid3 | Anode | Heater |
FC=Filament center
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