Cooling of the tube is accomplished by radiation from the plate and by circulation of forced-air through the base and around the envelope. Cooling can be simplified through the use of a SK-510 Air-System Socket and its accompanying glass chimney.
| GENERAL DESCRIPTION |
|
The 4-1000A is intended for use as an amplifier, oscillator, or modulator and is capable of efficient operation well into the VHF range. Cooling of the tube is accomplished by radiation from the plate and by circulation of forced-air through the base and around the envelope. Cooling can be simplified through the use of a SK-510 Air-System Socket and its accompanying glass chimney. |
| TECHNICAL SPECIFICATIONS | |
| Plate Dissipation (Max.) | 1000 watts |
| Screen Dissipation (Max.) | 75 watts |
| Grid Dissipation (Max.) | 25 watts |
| Frequency for Max. Ratings (CW) | 110 MHz |
| Cooling | Radiation & Forced Air |
| Filament Voltage Current |
Thoriated Tungsten 7.5 volts 21.3 amperes |
| Capacitances (Gnd. Cath. Connection) Input Output Feed-through |
28.1 pF 8.1 pF 0.3 pF |
| Amplification Factor (g1-g2) | 6.9 |
| Transconductance | 10,000 µmhos |
| Base | 5-Pin Special |
| Recommended Air-System Socket | SK-510 |
| Recommended Air Chimney | SK-506 |
| Recommended Heat Dissipating Connector | HR-8 |
| Maximum Seal Temperature | 200°C |
| Maximum Envelope Temperature | 225°C |
| Maximum Length | 9.63 in; 244.60 mm |
| Maximum Diameter | 5.25 in; 133.30 mm |
| Weight (approximate) | 1.5 lb; 0.68 kg |
| Operating Position | Vertical, base up or down |
| Specifications may change without notice | |
| THIS TUBE IS USED IN THE FOLLOWING SHORTWAVE BROADCAST TRANSMITTERS | ||
| Manufacturer | Transmitter specifications | Power in kW |
| Continental Electronics | 420 A | 500 |
| Gates | HF-1 M | 1 |
| THIS TUBE IS AVAILABLE FROM | ||
| Manufacturer | Rebuilder | Distributor |
| Covimag | Richardson Electronics | |
| Penta Laboratories | ||
| 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 |