| GENERAL DESCRIPTION |
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The ML-6697 is a general-purpose triode suitable for industrial heating and AM broadcasting. The tube features a rugged coaxial mounting structure providing high-dissipation, low inductance rf electrode terminals. The cathode consists of sturdy, self-supporting, stress-free, thoriated-tungsten filaments. The ML-6697 has a forced-air-cooled, heavy-wall anode with high-efficiency disc fins capable of dissipating 35 kW. The tube will operate with plate voltages up to 16 kV in CW operation. Maximum ratings apply at frequencies up to 30 MHz. Useful power output can be obtained at frequencies up to 70 MHz with reduced ratings. |
| TECHNICAL SPECIFICATIONS | |
| ELECTRICAL | |
| Filament Voltage | 13.0 Volts |
| Filament Current | 205 Amps |
| Filament Starting Current, maximum | 800 Amps |
| Filament Cold Resistance | 0.0073 Ohms |
| Amplification Factor | 20 |
| Interelectrode Capacitances Grid-Plate Grid-Filament Plate-Filament |
55 pf 76 pf 2.7 pf |
| MECHANICAL | |
| Mounting Position | Vertical, Anode Down |
| Type of Cooling | Forced-air |
| Air Flow on anode for 35 kW dissipation |
Pressure : 1700 cfm at 7.8" water Exhaust: 1970 cfm at 8.4" water |
| Maximum incoming air temperature | 50 °C |
| Maximum Envelope Temperature | 165 °C |
| Net Weight, approximate | 43 lbs. |
| Specifications may change without notice | |
| THIS TUBE IS USED IN THE FOLLOWING SHORTWAVE BROADCAST TRANSMITTERS | ||
| Manufacturer | Transmitter specifications | Power in kW |
| Continental Electronics | 417 B | 50 |
| RCA | BHF-100A | 100 |
| BHF-100B | 100 | |
| Technical Materiel Corporation | GPT-40K | 40 |
| THIS TUBE IS AVAILABLE FROM | ||
| Manufacturer | Rebuilder | Distributor |
| Econco | Richardson Electronics | |
| Kennetron | ||
| 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 |