GENERAL DESCRIPTION |
![]() |
The 7378 / QE08/200 is an all-glass, beam power tetrode having a maximum plate dissipation of 100 watts at frequencies up to 30 Mc/s. It is designed for AF or RF amplifier, oscillator, and frequency multiplier service and for single sideband applications. |
![]() |
TECHNICAL SPECIFICATIONS | |
ELECTRICAL | |
Cathode Heater voltage Heater current |
Coated, unipotential 6.3 volts 3.9 amps |
Amplification Factor | 5.7 |
Transconductance | 9000 μmhos |
Direct Interelectrode Capacitances Input Output Plate to grid |
30 μμf 12.7 μμf 0.9 μμf |
MECHANICAL | |
Mounting Position | Vertical or horizontal with plane of plate vertical |
Cooling | Radiation and convection |
Maximum Operating Temperature Plate seal Bottom pins Glass Bulb |
220°C 180°C 300°C |
Net weight | 7.8 ounces |
Specifications may change without notice |
THIS TUBE IS USED IN THE FOLLOWING SHORTWAVE BROADCAST TRANSMITTERS | ||
Manufacturer | Transmitter specifications | Power in kW |
Philips | 8FZ 510 | 25 |
8FZ 513 | 25 | |
8FZ 514 | 50 | |
8FZ 503 / 8FZ 512 | 120 | |
8FZ 515 | 120 |
THIS TUBE IS AVAILABLE FROM | ||
Manufacturer | Rebuilder | Distributor |
Richardson Electronics | ||
Vacuum Tubes, Inc. |
PRICE LEVEL (US$) | |||||
1 | 2 | 3 | 4 | 5 | 6 |
0 - 10 | 10 - 100 | 100 - 1000 | 1000 - 10,000 | 10,000 - 50,000 | 50,000 - 100,000 |